File: ChangeLog

package info (click to toggle)
bow 19991122-4
  • links: PTS
  • area: main
  • in suites: woody
  • size: 2,544 kB
  • ctags: 2,987
  • sloc: ansic: 38,660; lisp: 1,072; makefile: 594; perl: 492; yacc: 149; sh: 91
file content (8390 lines) | stat: -rw-r--r-- 327,989 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
1999-11-22  Andrew McCallum  <mccallum@justresearch.com>

	* Makefile.in (STANDARD_RAINBOW_METHOD_C_FILES): Added dirk.c.
	* dirk.c (log_gamma): Cache 100 integer x's.
	(bow_dirk_log_kernel): Take vocab size as argument instead of barrel.
	(bow_dirk_score): Add exponentiated log-densities, instead of log
	densities.  Do this by finding the max and subtracting.

1999-11-16  Andrew McCallum  <mccallum@justresearch.com>

	* cdm.c (cdm_options): New command-line options
	"cdm-print-smallest-alphas" and "cdm-print-largest-alphas".
	(cdm_parse_opt): Handle them.
	(bow_cdm_initialize_ct): New code allows this to be called more than
	once.  This way you can add new document (and hence words) and
	re-calculate the infogain.
	(bow_cdm_ct_set_alphas): Added structure ALPHA_RECORD for printing
	largest and smallest alphas.  Added, but commented out, code for
	smoothing the counts before fitting the Dirichlet, using
	log(alpha) in place of alpha, smoothing the alphas.  Print the
	largest and smallest alphas.
	(CDM_SCORE_ANNEAL_TEMPERATURE): New macro, currently defined not to be
	used.
	(bow_cdm_score): Handle it.

1999-11-10  Andrew McCallum  <mccallum@justresearch.com>

	* svm_base.c (sqrtf): New macro, necessary on some non-Linux
	machines.  Bug reported by Chuck Rosenberg.

1999-11-08  Andrew McCallum  <mccallum@justresearch.com>

	* readme.texi: Add simple usage examples for arrow.

	* arrow.c (arrow_serve2): Implement the 'query' command.  Change
	XML labels from "archer" to "arrow".
	(main): Change default number of hits on a query from 1 to 10.

	* libbow-desc.texi: Update descriptions.
	* svm_base.c: Surround many condition man printf's on the
	bow_verbosity_level, so that by default rainbow-stats will still
	work.

	* array.c (cdocs_iterator_count_for_doc): Replace NAN macro with
	arithmetic equivalent.
	* barrel.c (barrel_iterator_count_for_doc): Likewise.

	* wv.c (bow_wv_weight_sum): New function.
	* bow/libbow.h: Declare new function.

	* train_dirichlet.c (moment_match_mccallum): Separate
	implementation of moment matching that determines the variance by
	averaging the variance of all dimentions.
	(train_dirichlet_mom_sparse): New function.
	* bow/train_dirichlet.h: Declare new function.

	* tfidf.c (TFIDF_METHOD): Use
	bow_wv_set_weights_to_count_times_idf() instead of
	bow_wv_set_weights_to_count(), as is correct for TFIDF.  This was
	previously corrected in the scoring function.
	(bow_tfidf_params_tfidf): Change parameter settings for "tfidf"
	method.  Previously it was identical to the "tfidf_log_words"
	method, now it is identical to the "tfidf_log_occur" method.  In
	other words, previously it calculated IDF using the number of
	times the word occurred in the training data; now it uses the
	number of training documents in which the word occurs.

	* split.c (bow_split_options): Remove documentation for 'r'
	suffix.  It's confusing and shouldn't be used unawares.
	(bow_split_parse_opt): Add a 'pcr' suffix, but its not implemented
	yet.
	(bow_set_doc_types_randomly_by_count_per_class): Count the number of
	untagged documents in each class, and if this function is trying
	to tag more than are available, simply have this function tag
	less.

	* rainbow.c (bow_print_log_odds_ratio): Handle words that are not
	in the vocabulary.

	* ddf.c: Implement ddfmm classification method.  This method fits
	the Dirichlet by moment matching only.

	* arrow.c (arrow_serve2): New function.  Now call this instead of
	arrow_serve.  It provides output in XML, like archer does.  Only
	the rank command is implemented.

1999-11-02  Andrew McCallum  <mccallum@justresearch.com>

	* int4str.c (bow_int2str): Assert that INDEX argument is
	non-negative.

1999-10-28  Gregory C Schohn  <gcs@cmu.edu>

	* svm_base.c (svm_vpc_merge): fixed bug for svml-basename - all
 	the docs still need to be output, so that the other data (like
 	word weights can be properly extracted).

1999-10-28  Andrew McCallum  <mccallum@justresearch.com>

	* cdmem.c (cdmem_options): New command-line option
	"cdmem-dist-data".
	(cdmem_parse_opt): Handle it.
	(bow_cdmem_new_vpc_with_weights): Let the command-line option
	determine what documents are used to learn the distance metric.

	* README-SVM (Outputing data): Added new section describing how to
	produce files ready for input into SVM^light.

1999-10-27  Gregory C Schohn  <gcs@cmu.edu>

	* svm_base.c (svm_vpc_merge): fixed svml bugs
	* svm_base.c fixed outdated documentation for parse info.
	* svm_smo.c (smo): fixed a parse error

1999-10-26  Gregory C Schohn  <gcs@cmu.edu>

	* rainbow.c (rainbow_test): added a line for svms.  When svmlight
 	output is being generated, rainbow_test prints the label (only
 	works for binary barrels) so that svm_score can append the data
 	for that example.

	* svm_base.c (svm_options[]): removed some of the single character
 	switches.  Added arguments for tsvms & added svml-basename arg.
	(svm_permute_data, svm_unpermute_data): added.
	(infogain): should have made infogain compatible with sets with
	unlabeled data (it ignore those docs with y = 0). 
	(svm_vpc_merge): added support for using unlabeled docs for
	transduction.  Also added code to spit out svmlight friendly
	files. 
	(svm_score): added code to write svmlight files.
	* svm_trans.c: initial version - pretty much empty now.
	* bow/svm.h: added svm_*permute_data declarations & the
 	transduce_svm declaration.
	* svm_al.c (al_svm_test_wrapper): replaced permutation code with
 	calls to svm_permute_data & svm_unpermute_data.
	* svm_smo.c (smo): removed srandom(1) - was only there for
 	debugging.
	* README-SVM (Bugs): removed section about smo being broken (was
 	fixed).

	* Makefile.in: added svm_trans.c (transductive svms) to the
 	svm_files.

1999-10-25  Andrew McCallum  <mccallum@justresearch.com>

	* .cvsignore: Add automatically-generated archer files, and a few
	others.

1999-10-21  Andrew McCallum  <mccallum@justresearch.com>

	* barrel.c (bow_barrel_keep_top_words_by_infogain): Don't set the
	NUM_WORDS_TO_KEEP to be the WI2IG_SIZE (which is the total number
	of words).  Set it to the MIN of this and the original
	NUM_WORDS_TO_KEEP.  Before this fix, no words were ever getting
	removed.  What a bug!  I wonder how long this has been in there?
	Reported by Carsten Lanquillon <lanqui@cs.cmu.edu>.

1999-10-20  Andrew McCallum  <mccallum@justresearch.com>

	* ddf.c (bow_ddf_dirichlet_from_doc_word_counts): Only print the
	diagnostics for 10 sampled words, not 50.
	* bpe.c (bow_bpe_set_cdoc_word_count_from_wi2dvf_weights): Print
	the alphas for only 10 sampled words intead of 20.

1999-10-19  Andrew McCallum  <mccallum@justresearch.com>

	* svm_base.c: Check verbosity level before printing to stdout.
	Only print if above bow_progress.

1999-10-19  Gregory C Schohn  <gcs@cmu.edu>

	* svm_base.c (svm_score): removed cnt variable (useless) & fixed a
 	typo-bug (sub_model[i] -> barrel).

	* svm_smo.c (smo): changed the printf for information of where
 	opt_pair failed to an fprintf.

1999-10-19  Gregory C Schohn  <gcs@justresearch.com>

	* Makefile.local (DIST_ALL_FILES): added -DGCSJPRC (turn local
 	pedantic debugging) to DEFS.

	* Makefile.in (ALL_CPPFLAGS): added -Ibow (so that pr_loqo.h is
 	found by pr_loqo.c even though they aren't in the same directory
 	[since we can't change pr_loqo.*]).
	(DEFS): Changed from _DEFS & now using += instead of the temporary.

	* svm_base.c: the epsilon_crit is now /2 for SMO (since the actual
 	eps is 2x the variable).  fixed some printfs.

	* svm_loqo.c (build_svm_guts): added code to remember previous KKT
 	epsilon (even though nobody sets the initial value to anything
 	different than the macro).
	(build_svm_guts): added local define (GCSJPRC) for debugging stuff
 	which includes stopping the proc & sending mail.

	* svm_smo.c: commented #DEBUG.  added kcache_ages to appropriate
 	spots across the file.  removed some print statements that weren't
 	to useful anymore.
	(opt_pair): changed an optimality check - used to use (a2+ao2)*eps 
	to detrmine if something moved far enough, now just using eps_a 
	(may not be right, but its more correct than before) - we need it 
	to prevent inf. looping.
	(opt_pair): Removed some unreachable in if statements.
	(opt_pair): Fixed calculations of bup & blow - they were backwards
	(smo): the threshold, b is now (bup+blow)/2 instead of blow (which 
	is at most epsilon_crit different).

1999-10-16  Gregory C Schohn <gcs@justresearch.com>

	* svm_base.c: Added #ifdef HAVE_LOQO around calls to build_svm_guts
	* svm_al.c: Added #ifdef HAVE_LOQO around calls to build_svm_guts
	* Makefile.in: Re-enabled svm code.  Made the pr_loqo checks look 
	./bow/pr_loqo.h

1999-10-16  Andrew McCallum  <mccallum@justresearch.com>

	* README-SVM (Obtaining sources): File renamed from README_SVM.
	Clarify directions for where to put pr_loqo.h.

1999-10-15  Andrew McCallum  <mccallum@justresearch.com>

	* Version (BOW_MINOR_VERSION): Changed from 9 to 95.
	* bow/libbow.h (BOW_MINOR_VERSION): Changed from 9 to 95.

	Bug fixes for distribution.
	* .cvsignore: Added rainbow-rank and rainbow-ts.
	* Makefile.in: Temporarily disable SVM from rainbow.
	(ARCHER_GENERATED_C_FILES): New variable.  Remove this files from
	those distributed, because they should be generated.
	(ARCHER_DIST_FILES): Added archer.c and archer_query.c
	* Makefile.in (DEMO_EXECUTABLES): New variable.
	(ARCHER_DIST_FILES): Added dirichlet.c.
	(DIST_FILES): Added archer.el
	* multiclass.c: Comment out unused variables.

	Odd assortment of clean-ups.
	* bow/libbow.h (bow_random_reset_seed): Declare function.
	* train_dirichlet.c (MOMENT_MATCH_ONLY): New macro.
	(SPARSE): Change macro value from 0 to 1.  This only effects running
	train_dirichlet's main() directly.
	(main): comment out the printing of the gammaln() tests.  New local
	variable COUNTS_SIZE, increased from 100 to 10000.  Print more
	diagnostics at the end.
	* readme.texi: Update for new front-ends and fix command-line
	options so they work.
	* rainbow.c (rainbow_options): Clean up wording in several places.
	(rainbow_query): Change behavior of repeated queries.
	(bow_print_log_odds_ratio): Add a new FILE* argument.  All callers
	changed.
	* nbshrinkage.c: Allow different lambda hierarchical mixture
	weights for different classes.
	* mix.c (mix_options): New command-line option for setting the
	number of EM iterations.
	(mix_new_vpc): Don't allow initial random class_probs to be zero.
	* libbow-desc.texi: Update for new front-ends and MSWin.
	* lex-gram.c (bow_lexer_gram_open_text_fp): Properly save the
	return value of bow_realloc().  This fixes a nasty crash.
	* emsimple.c (bow_emsimple_new_vpc_with_weights): Print
	diagnostics using odds_ratio.
	* dirichlet.c (main): New command-line argument -I.  Handle it.
	* dice.c (print_usage): Expand help statement.
	* ddf.c (ddf_force_large_alphas): New variable.
	(bow_ddf_dirichlet_from_doc_word_counts): Handle it.
	(ddfla): New method.
	* cdmm.c (CDMM_PRINT_ALPHAS_KEY): Change value to not conflict
	with the cdm method.
	* bpe.c (bpe_prior_alpha): Change default prior "ghost count" from
	1 to 0.
	(bow_bpe_set_cdoc_word_count_from_wi2dvf_weights): Make the verbosity
	work even when the vocabulary size is less than 20.
	(bow_bpe_score): Print more information when BOW_PRINT_WORD_SCORES.
	Print more digits of precision of BOW_PRINT_WORD_SCORES for
	individual words.
	* Makefile.local (RAINBOW_METHOD_C_FILES): Move some of these to
	the Makefile.in.

1999-10-15  Gregory C Schohn  <gcs@cmu.edu>

	* svm_base.c: fixed some preprocessing bugs - also mildly cleaned
 	up the code...

	* svm_smo.c: started fixing bugs (the definition of the error
 	vector changed - the modified code did not also change in some
 	spots)- there is still 1 left

	* README_SVM: up to date - ready for release.

1999-10-13  Andrew McCallum  <mccallum@justresearch.com>

	* Makefile.in: Fix errors from last check-in.
	
1999-10-13  Gregory C Schohn  <gcs@cmu.edu>

	* Makefile.in (SVM_FILES): Added a check for pr_loqo.[ch] - if
 	they are there the svm parts of bow are built with it, otherwise
 	they parts of the code that use pr_loqo are turned off.  The
 	conditional sets necessary files & defines.
	
	(STANDARD_LIBBOW_H_FILES): added bow/svm.h
	(STANDARD_LIBBOW_C_FILES): added $(SVM_FILES) (4-5 files,
	replacing svm.c) 

	* configure.in: removed checks for pr_loqo.* - that's now done in
 	the makefile.
	
	added a check for the fpsetmask macro (which is necessary on at
 	least freebsd boxes to turn ieee math on).

1999-10-07  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: (al_svm_test_wrapper) added printing of documents added
	& the # of bound support vectors.

1999-10-06  Dayne Freitag  <dayne@tweed.jprc.com>

	* tagged.lex: HTML entities now recognized by lex, rather than
	function is_entity.  Parser returns when label is lexed; return
	value indicates word, begin label, or end label.
	* opts.c (parse_bow_opt): Conditional removal of code creating the
	bow data directory which is not appropriate for DART and FDART.
	* labels.c (bow_last_label): New function.
        * archer_query_index.c: Major re-write of previous code.
	* archer_query_array.c: Major re-write of previous code, much of
	which was buggy.
	* archer_query.y: Deleted the "term >N term" syntax as
	superfluous.  Added the "term < term" syntax.  Added the "word"
	type and "WORD" terminal to distinguish from NUMBER.
	* archer_query.c: Code to free allocated structures.
	* archer-server.c (archer_query_socket_init): Now releases socket
	on failure.  Unix socket support.  Streamlined code by changing
	code under archer_query_serve_one_query.  New functions:
	archer_query_serve_one_admin_command,
	archer_query_serve_admin_commands,
	archer_query_server_command_loop,
	archer_query_serve_regular_query,
	archer_query_server_process_commands.  Added security features.
	New functions: archer_remote_host_matches_spec,
	archer_query_password_ok.
	(archer_server_index): Call archer_archive after indexing.
	(archer_server_index_with_markup): New function.
	(archer_server_query_new): Fixed output.  Decomposed, adding new
	functions archer_server_print_hitlist and
	archer_server_print_hit.  Added ndump command and new functions
	archer_server_dump_new, archer_server_dump_preamble, and
	archer_server_do_dump.  Added fields command and new function
	archer_server_fields.
        * archer_query_execute.c: Fixed many memory leaks, and rewrote
	large sections.
	* annotation.c (annotation_sarray_reread): New function.
	* archer.c: Allow mark-up spoofing of the indexer, batch
	incremental indexing, passwords and IP-based client restriction.
	New executables
	(conditionally compiled) DART, FDART, and IDART.
	(archer_get_fp_from_filename): New function.
	(flush_labels): New function.
	(archer_index_term): New function.
	(archer_index_label): New function.
	(archer_index_filename_flex): Some code removed to above functions.
	(archer_index): Changed to prevent re-opening/re-construction of
	already opened files and existing data structures (needed for
	batch incremental indexing).

	
1999-10-06  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: (svm_vpc_merge) fixed preprocessing bug that caused big
 	problems when no weighting was being used in conjunction with
 	pairwise voting.
	
	* also changed all of the options *, to svm-*.

1999-10-05  Andrew McCallum  <mccallum@justresearch.com>

	* TODO: Remove and few items that were done.
	* NEWS: Describe some new features.
	* HACKING: Update to remove no-longer-available CVS server
	description.

	* barrel.c (bow_barrel_keep_top_words_by_infogain): Fix verbosity
	message for vocabulary sizes under 5.

1999-10-05  Andrew McCallum  <mccallum@justresearch.com>

	* docnames.c (bow_map_filenames_from_dir): Fix printf argument.

1999-09-29  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: a lot of minor small changes (like printing stuff), no
 	bug fixes - make sure to suppress the score matrix (which is
 	hundred's of MB large) if test-in-train is used with active
 	learning in the active learning stuff if you don't want it!

1999-09-24  Andrew McCallum  <mccallum@justresearch.com>

	* dirichlet.c: Added ability to do simple classification.  For
	example: (echo 2 ; cat
	~/research/projects/dicefactory/synth1/bar.counts ) | ./dirichlet
	-c 2 18.4738 26.1034 2.49099 2.04999

1999-09-22  Andrew McCallum  <mccallum@justresearch.com>

	* docnames.c (bow_map_filenames_from_dir): When a directory can't
	be opened, simply skip it instead of trying to open it as a file.
	(This works around Linux bug whereby directories seem to
	disappear.)

1999-09-20  Kamal Nigam  <knigam@zeno.jprc.com>

	* maxent.c: New code for options maxent-vary-prior-by-count
	maxent-gaussian-prior-no-zero-constraints
	maxent-prune-features-by-count
	maxent-vary-prior-by-count-linearly.

1999-09-19  Gregory C Schohn  <gcs@cmu.edu>

	* configure.in: added check for srandom - which was & still is
 	necessary for libbow.h

	* bow/libbow.h: changed the defines for srandom & random so that
 	both get redefined if one is missing.

1999-09-09  Andrew McCallum  <mccallum@justresearch.com>

	* train_dirichlet.c: Allow the main() test driver to be compiled
	in by simply defining TD_MAIN on the gcc command-line.
	* random.c (bow_random_reset_seed): New function.
	(bow_random_set_seed): Make it work with the above function.
	* multiclass.c (multiclass_iterated_mixture_given_doc_and_cis):
	New function.
	(multiclass_mixture_given_doc): Allow this to be called with a test
	document too.
	(multiclass_log_prob_of_classes_given_doc): Add commented-out code to
	implement BIC.
	(multiclass_explore_cis_greedy1): Bug fixes.
	* cdmem.c (cdmem_parse_opt): Allow printing of the accuracy on the
	unlabeled set.
	(bow_cdmem_class_wi2dvf): New function.
	(bow_cdmem_new_vpc_with_weights): Save original document types and
	classes.  Using new macro SET_CASCADE_TREE_WITH_ALL_DATA, allow
	three different options for training the distance function.  Allow
	multiple rounds of CDM distance metric learning.
	* cdm.c: Include <bow/train_dirichlet.h> instead of defining
	train_dirichlet() extern here.
	(bow_cdm_initialize_ct): Make it safe to call this function more than
	once.
	(bow_cdm_ct_set_alphas): Define COUNTS as double* instead of unsigned*.
	Print the bottom-most word in the cascade tree.  Don't assert DV.
	* barrel.c (bow_barrel_add_from_text_dir): Instead of crashing
	when failing to open a file, simply print warning.

1999-09-03  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: checkpoint - some bitrotting code may not work...
	
	* svm.c: updated SMO to work with Keerthi, et al's modifications - 
	the heuristic is much better, but the running time on 20 newsgroups
	is still slower than Thorsten's methods.
	
	* svm.c: added a lot of active learning logging.

1999-08-18  Thomas P. Minka  <minka@jprc.com>

	* train_dirichlet.c, bow/train_dirichlet.h: Added train_sum_alpha 
	  global variable.

1999-08-18  Andrew McCallum  <mccallum@justresearch.com>

	* bow/libbow.h: Declare new functions.
	* bow/cdm.h: Update function prototypes to match.
	* wv.c (bow_wv_copy): New function.
	* wi2dvf.c (bow_wi2dvf_set_idf_to_count): New function.
	(bow_wi2dvf_dv_hidden): New function.
	* wa.c (bow_wa_remove): New function.
	* vpc.c (bow_wi2dvf_sum): New function.
	(bow_barrel_new_vpc): Move the updating of the CDOC->WORD_COUNT to
	earlier in the function.
	* rainbow.c (rainbow_test): In the test documents include words
	that were previously removed from the training set by, for
	example, feature selection.
	* heap.c (bow_make_dv_heap_from_wi2dvf_hidden): New function.
	* naivebayes.c (bow_naivebayes_pr_wi_ci): All m_est_m to be zero,
	if set as such explicitly on the command-line.
	(bow_naivebayes_total_word_count_for_ci): New function.
	* ddf.c: Add ADDITIONAL_COUNT.
	* dice.c: Add many command-line options.
	* ctdf.c: Add handling for zerotons and unknown words.
	* bpe.c: Include bpe_prior_alpha, and various other bug fixes.
	* barrel.c: Clean up some verbosity messages.
	(bow_barrel_set_idf_to_count_in_train): New function.
	* train_dirichlet.c: Change name from gammaln_fast to gammaln, so
	this function can be used, depending on the #define.
	* cdm.c: Many completions and bug fixes.
	* cdmem.c (SET_CASCADE_TREE_WITH_ALL_DATA): New macro.
	(bow_cdmem_new_vpc_with_weights): Depending on above macro, use all
	labels to set the distance metric.

1999-08-13  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: added active learning stuff - has a pretty bad selection
 	heuristic (subject to pathological cases), had to change
 	(modularize) different sections of the code...

1999-08-09  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: the removal of inconsistent examples (for the
 	Thorsten-like algorithm) is working, it still needs to be extended
 	for SMO.

1999-08-01  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: 3 bug fixes - one in the lagrange multiplier check, one
 	in the loop to call pr_loqo (the maximum number of iterations
 	wasn't increasing when pr_loqo could not converge), & a bug that
 	caused the equality constraint to fall apart when the working set
 	size was less than the maximum working set size (actually, rewrote
 	that block to be way more efficient).
	
	* svm.c Also played with the kernel cache in a lot of different
	ways, a	simple (but not to simple) solution that is committed 
	yields the best times (when the kernel cache is not grossly
	smaller than the number of support vectors squared).

1999-07-28  William Morgan  <wmorgan@jprc.com>

        * archer_query_array.c: added
        * archer_query_array.h: added
        * archer_query_execute.c: added
        * archer_query_execute.h: added
        * archer_query_index.c: added
        * archer_query_index.h: added
	
	* pv.c (bow_pv_read_next_di_li_pi): removed useless assert()

	* archer_query.c: reformatted for better GNU style

	* archer_query.h: ditto

	* archer.c (mem_error): added, as well as other stuff surrounded
 	by ARCHER_USE_MCHECK defines for optional memory checking

	* archer-server.c (archer_server_query_new): made nquery command
 	call new query engine. right now this dumps core.

	* Makefile.in (ARCHER_C_FILES): added archer_query_ files
	(ARCHER_H_FILES): ditto

1999-07-19  Thomas P. Minka  <minka@jprc.com>

	* train_dirichlet.c (train_dirichlet_nr): Added the option to not
	train the sum of alphas, only their ratios.

1999-07-16  Andrew McCallum  <mccallum@justresearch.com>

	* ddf.c: Debug and add smoothing.  It smooths in the same
	proportion that adding a pseudo-count of 1 would do for
	naivebayes.

1999-07-16  William Morgan  <wmorgan@jprc.com>

	* Makefile.in: fixed small bug that occasionally caused make to
 	overwrite archer_query.c

1999-07-16  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: new version - about 3 times as fast thanks to re-using
 	error-cache values for the kkt conditions instead of
 	re-calculating them each time.  A valid cache bitmap was also
 	added...

	* svm.c: made semi-small bug fixes, like precision checks, the
 	removal of a bogus heuristic check & some small coding bugs...

1999-07-16  William Morgan  <wmorgan@jprc.com>

	* bow/archer.h: removed ARCHER_MAX_LABEL_PARAMS (cruft)

	* flex_mail.lex: modified function naming scheme to work with the
 	new way archer lex files are handled

	* configure.in: added AC_PROG_LEX to configure lexer generator

	* archer_query.y: added

	* archer_query.lex: added

	* archer_query.h: added

	* archer_query.c: added

	* archer.c (archer_query_hits_matching_sequence): fixed bug that
 	caused archer to hang
	* Makefile.in: added rules for .lex and .y files for archer
	* archer-server.c (archer_server_query_new): added
	(archer_server_query_hits_matching_sequence): fixed bug that
 	caused archer to hang
	
1999-07-15  Jason Reed  <jcreed@cyclone.jprc.com>

	* archer.c (archer_index_filename_flex): Don't write redundant
 	wi2pv information.

1999-07-13  Jason Reed  <jcreed@cyclone.jprc.com>

	* archer-server.c (archer_server_query): Include terms matched in
 	query results.

	* archer-server.c: Added 'hits' command to select a range of hits
 	to show.
	(No need to send N tens of thousands of hits over the
	socket when someone searches for 'artificial intelligence' or
 	something equally general)

1999-07-13  Gregory C Schohn  <gcs@cmu.edu>

	* svm.c: includes smo, which works fine, but is slower than
 	thorsten's algorithm... for now.

1999-07-13  Thomas P. Minka  <minka@jprc.com>

	* train_dirichlet.c (newton_step): Don't try to change an alpha
	which is zero, because its gradient will always be negative.

1999-07-12  Thomas P. Minka  <minka@jprc.com>

	* train_dirichlet.c (gammaln,digamma,trigamma): Changed to a
	higher precision algorithm.  No effect on Dirichlet fitting,
	however.

1999-07-12  Jason Reed  <jcreed@cyclone.jprc.com>

	* lex-suffixing.c (bow_lexer_suffixing_postprocess_word): Fixed
 	off-by-one bug, I think.

	* archer.c: Does incremental writes in query server. (Does *not*
	do pure incremental writes if we are just doing an --index)
	Removed label name and document name fields from archer_labels
	and archer_docs entries, since they made entries variable length.

	* archer-server.c: Added indexing capability. (on second socket)
	Always use simple lexer for query lexing, independent of
	data lexing.
	Do 'xxx' suffixing iff appropriate.
	
	* wi2pv.c: Made incremental.

	* int4str.c: Added incremental functions.
	* int4word.c: likewise.
	* sarray.c: likewise.
	* array.c: likewise.
	
	* bow/archer.h: likewise.
	* bow/libbow.h: likewise.
	
1999-07-09  Thomas P. Minka  <minka@jprc.com>

	* train_dirichlet.c (train_dirichlet_sparse, train_dirichlet_nr,
	logProb, moment_match): Added extra_count parameter.

1999-07-08  William Morgan  <wmorgan@jprc.com>

        * archer-server.c (archer_query_socket_init): added SIGPIPE
	handling; archer server mode now no longer crashes as easily

1999-07-08  Kamal Nigam  <knigam@server5.jprc.com>

	* Makefile.local (RAINBOW_METHOD_C_FILES): Added emsimple.c.

1999-07-08  Andrew McCallum  <mccallum@justresearch.com>

	* Makefile.local (RAINBOW_METHOD_C_FILES): Added nbsimple.c
	* naivebayes.c (bow_naivebayes_score): Initialize NUM_SCORES to
	get rid of GCC warning.

	* crossbow.c (crossbow_options): New option --use-vocab-in-file.
	(struct crossbow_arg_state): New element VOCAB_MAP.
	(crossbow_doc_read): Read the DOC->CIS.
	(crossbow_index_multiclass_list): Implement
	BOW_PRUNE_VOCAB_BY_OCCUR_COUNT_N.
	(crossbow_index): Handle the VOCAB_MAP.
	* hem.c (crossbow_hem_em_one_iteration): Print the perplexity
	before returning.

1999-07-02  Andrew McCallum  <mccallum@justresearch.com>

	* ddf.c: Random bug fixes.  Added option --ddf-prior-alpha.

1999-07-08  Gregory C Schohn  <gcs@cmu.edu>

	* tfidf.c (tfidf): changed cdocs->length to ndocs so that only
	those documents which could change the df value are considered.

	* svm.c: added support for tfidf scoring for each submodel 
	(could easily be extended to any type of scoring...)
	
1999-07-02  Gregory C Schohn  <gcs@cmu.edu>

	* Makefile.in: added rules for svm.c & pr_loqo.c which are 
	filled in by configure, if they exist...
	
	* configure.in: added a check for pr_loqo.h & pr_loqo.c, if they
 	are there, the makefile will build libbow with its complete svm
 	package, otherwise, svm.c is ignored.

	* rainbow.c (main): added support for build-and-save &
 	test-from-saved	(allowing the user to build a model, 
	then reuse it on succesive runs).  Also added support
	for svm.c.

	* wi2dvf.c (bow_wi2dvf_add_di_wv): bow_dv_add_di_count_weight
	now adds the weight value to the dv.

	* naivebayes.c (bow_naivebayes_score): added 
	naivebayes_score_returns_doc_pr flag so that P(X|C) is returned
 	instead of P(C|X).  Added naivebayes_score_unsorted so that the
	array is returned in unsorted (ie. each ith index is for the 
	ith class).

	* bow/naivebayes.h: added naivebayes_score_returns_doc_pr &
 	naivebayes_score_unsorted globals so that naivebayes.c can be
 	extended for the fisher kernel in svm.
	
	* svm.c: fixed a couple of typos & changed some outdated code.

	* bow/svm.h: Initial check-in.

1999-07-02  William Morgan  <wmorgan@jprc.com>

	* Makefile.in (ARCHER_C_FILES): added required files for
	archer compilation that had been lost previously; added
	lex -> c rule
	
	* Makefile.local: removed unnecessary lexing rule (now in 
	Makefile.in)

	* annotation.c: added GPL header
	
	* labels.c: ditto
	
	* server.c: moved to archer-server.c

	* tagged.lex: moved to tagged_lex.lex

1999-07-01  Thomas P. Minka  <minka@jprc.com>

	* train_dirichlet.c: Changed several functions to use the new
	sparse iterator scheme.
	(moment_match): Uses n_group_by_key instead of n_group.

1999-07-01  Andrew McCallum  <mccallum@justresearch.com>

	* ddf.c: Fix argument types for train_dirichlet_sparse, and call
	with correct types.

	* bow/libbow.h (bow_iterator_double): New type.
	* barrel.c: Added an iterator for the columns of a barrel that
	match a class.
	(bow_barrel_iterator_for_ci_new): New function.
	* array.c: Added (commented-out) code for an iterator over a cdoc.
	* train_dirichlet.c (train_dirichlet_nr): Initialize old_logProb
	to 0 to get rid of gcc warning.

	* ddf.c: Use new iterator.

	* Makefile.in: Drastically rearranged to make different sections
	for different libbow front-ends.
	* Makefile.local: Updated to handle new Makefile.in organization.
	Removed rules for Pete Su's old archer query parser.
	* Makefile.preamble: Emptied.  I think this file is no longer
	necessary.

1999-07-01  Thomas P. Minka  <minka@jprc.com>

        * train_dirichlet.c (train_dirichlet): Changed to call
        train_dirichlet_nr for the work.
        (train_dirichlet_sparse): Same as train_dirichlet but for sparse 
        counts.
        (train_dirichlet_nr): General Newton-Raphson with option for
        sparse counts.
        (moment_match): Changed to save memory.  Added option for sparse 
        counts.
        (logProb): Added option for sparse counts.

1999-06-30  William Morgan  <wmorgan@jprc.com>

	* annotation.c: new file

	* bow/archer.h: added annotation function interfaces and structs

	* server.c (archer_query_socket_init): added annotation handling
 	code
	(archer_server_query): ditto

	* opts.c (bow_options): added ANNOTATION_KEY option

	* Makefile.local (ARCHER_C_FILES): added annotation.c

1999-06-29  William Morgan  <wmorgan@jprc.com>

	* bow/libbow.h: added USE_TAGGED_FLEXER

	* bow/archer.h: changed lexer interfaces slightly, and moved a few
 	things from archer.c

	* tagged.lex: created

	* flex_mail.lex (flex_mail_get_word_extended): added

	* opts.c (bow_options): added FLEX_TAGGED_KEY

	* archer.c (archer_index_filename_flex): added tagged flexer
 	option
	(archer_query_hits_matching_wi): fixed small bug
	(archer_query_hits_matching_sequence): fixed another small bug
	(archer_query_socket_init): removed (to server.c)
	(archer_query_server_process_commands): ditto
	(archer_query_serve_one_query): ditto
	(archer_query_serve): ditto

	* Makefile.local (ARCHER_C_FILES): added flex_mail.c,
 	tagged_lex.c and server.c

	* server.c: created. moved all server code from archer.c to here.

1999-06-28  Andrew McCallum  <mccallum@justresearch.com>

	* ddf.c (bow_ddf_dirichlet_from_doc_word_counts): Make it use the
	train_dirichlet_sparse().
	* ddf.c: New file.
	
1999-06-15  Thomas P. Minka  <minka@jprc.com>

        * train_dirichlet.c (train_dirichlet): Changed to always be
        conservative.

1999-06-11  Thomas P. Minka  <minka@jprc.com>

        * train_dirichlet.c (train_dirichlet): Handles the all zero case
        properly.
        * train_dirichlet.c (main): Reads count data from stdin.

1999-06-11  Kamal Nigam  <knigam@zeno.jprc.com>

	* cdm.c (bow_cdm_ct_set_alphas): change asserts to allow 0 alphas
	* cdmem.c (bow_cdmem_new_vpc_with_weights): Fix word count = 0
	case

1999-06-11  Kamal Nigam  <knigam@server6.jprc.com>

	* train_dirichlet.c (train_dirichlet): changes from Tom.
	* naivebayes.c (bow_naivebayes_score): Fixed memory trashing bug.
	* em.c (bow_em_score): cosmetic fixes only.
	* cdmem.c (bow_cdmem_new_vpc_with_weights): Fixed invocation of
	bow_barrel_score.
	* cdm.c (bow_cdm_word_probs_using_ct_alphas): Removed some code at
	Andrew's request.  Changed assert to allow some roundoff error.
	(bow_cdm_score): Fixed memory-trashing bug.

1999-06-10  Kamal Nigam  <knigam@zeno.jprc.com>

	* bow/libbow.h (bow_barrel_set_weights): checked for null function

	* Makefile.preamble (EXTRA_METHOD_C_FILES): added cdmem.c

	* cdm.c (bow_cdm_word_probs_using_ct_alphas): added assert to
	check for NaN
	(bow_cdm_print_word_probs): Removed superfluous exit.
	(bow_cdm_new_vpc): Removed diagnositc.

1999-06-10  Andrew McCallum  <mccallum@justresearch.com>

	* train_dirichlet.c: Use new improved method with iteration.  It
	also now works for Dirichlet densities of arbitrary size, not just
	Betas.  (From Tom Minka.)

	* cdm.c (bow_cdm_word_probs_using_ct_alphas): Fix the setting of
	the bottom-most word in the cascade tree.

	* cdm.c: Several bug fixes.  Now runs.
	* Makefile.preamble (EXTRA_METHOD_C_FILES): Added bpe.c, cdm.c and
	train_dirichlet.c.
	* train_dirichlet.c (train_dirichlet): For now, don't do newton
	iterations.

	* rainbow.c (rainbow_unarchive): Handle the case in which the
	OUTPUTNAME_FILENAME doesn't exist in the model directory.
	* opts.c (parse_bow_opt): Add "dw" as an alias for
	"document-then-word".
	(MAX_NUM_CHILDREN): Upped from 10 to 100.
	(bow_argp_add_child): Fix assertion to complain if we overrun again.
	* int4word.c (bow_words_add_occurrences_from_file): New function.
	(bow_words_add_occurrences_from_text_dir): Use it.
	* info_gain.c (bow_infogain_wa): New function.
	* barrel.c (bow_barrel_add_document): Add comment questioning
	assert().
	* bow/libbow.h: Declare new functions.

	* multiclass.c: Changed total_num_mixtures_possible calculation.
	Changed palpha from 1.0 to 0.01.  Changed malpha from 0 to 1.
	Changed pruning class set size from 4 to 3.  Print a warning if
	the correct class vector was never evaluated.

1999-06-10  Andrew McCallum  <mccallum@justresearch.com>

	* cdm.c: Implemented but not tested.

1999-06-10  Kamal Nigam  <knigam@zeno.jprc.com>

	* bow/em.h (bow_em_set_priors_using_class_probs): New prototype.

	* cdm.c (bow_cdm_score): Implemented.

1999-06-09  Andrew McCallum  <mccallum@justresearch.com>

	* lex-suffixing.c (bow_lexer_suffixing_postprocess_word): Before
	rewinding to the beginning of the file (in order to lex without
	adding suffixes), not only check for two newlines in a row, but
	also check for the end of the file, so that files without \n\n and
	without a trailing \n get processed both with and without suffixes
	added.

1999-05-15  Andrew McCallum  <mccallum@justresearch.com>

	* multiclass.c: Backoff the per-class-set mixture distribution in
	a way loosely based on shrinkage.  More bug fixes.

1999-05-14  Andrew McCallum  <mccallum@justresearch.com>

	* multiclass.c: Many bug fixes and enhancements to class set
	search.

	* lex-japanese.c (bow_lexer_japanese_get_word): Minor bug fixes.

	* multiclass.c: Overhauled version with better search in class
	vector space.

	* Makefile.preamble: Instead of conditioning on "ifdef unix",
	condition on "ifndef WIN32", since "unix" wasn't defined on UNIX.
	Fix this properly later.
	(EXTRA_LIBBOW_H_FILES): Add more.

	* Makefile.local (DIST_ALL_FILES): Add extra Makefiles.

1999-06-01  Jason Reed  <jcreed@cyclone.jprc.com>

	* archer.c (archer_index_filename_old_lex): removed erroneous
 	redundant code

1999-05-28  Jason Reed  <jcreed@cyclone.jprc.com>

	* flex_mail.lex: Fixed archer.h include directive

	* Makefile.local (flex_mail.o): Added.
	(archer): Removed redundant target.

1999-05-27  William Morgan  <wmorgan@jprc.com>

	* bow/libbow.h (bow_flex_type): new enumeration
	
	* bow/archer.h (BOW_MAX_WORD_LABELS): new #define
	(archer_label): new typedef

	* pv.c (PV_WRITE_SIZE_INT): fixed off-by-one bug (I think)
	(bow_pv_write_size_di_li_pi): new function
	(bow_pv_write_next_di_li_pi): likewise
	(bow_pv_read_next_di_li_pi): likewise
	(bow_pv_add_di_li_pi): likewise
	(bow_pv_next_di_li_pi): likewise

	* opts.c (bow_options): added flex-mail option
	(parse_bow_opt): likewise

	* labels.c: new file

	* flex_mail.lex: new file

	* deflexer.c (bow_flex_option): new variable

	* archer.c (archer_label_write): new function
	(archer_label_read): new function
	(archer_label_free): new function
	(archer_label_write): new function
	(archer_archive): added label data files
	(archer_unarchive): likewise
	(archer_index_filename_flex): new function
	(archer_query_hits_matching_sequence): added support for labels
	(archer_print_all): likewise

	* wi2pv.c (bow_wi2pv_wi_next_di_li_pi): new function
	(bow_wi2pv_wi_add_di_li_pi): new function

1999-05-13  Andrew McCallum  <mccallum@justresearch.com>

	* Makefile.local (snapshot-all): Fix typo.

	* lex-japanese.c (bow_lexer_japanese_get_word): Better handle
	mixed English and Japanese by doing extra handling for the
	English: downcase, include only alphabetics and postprocess with
	the simple lexer.

	* crossbow.c (crossbow_doc_read): Initialize CIS_MIXTURE.
	(crossbow_unarchive): Use bow_array_new_with_entry_size_from_data_fp
	so that it will work with old models that don't have the
	CIS_MIXTURE.

	* rainbow.c (rainbow_test): Add error messages warning that -O and
	-D are not implemented here.

	* bow/crossbow.h (crossbow_doc): Add element CIS_MIXTURE.
	* array.c (bow_array_new_with_entry_size_from_data_fp): New
	function.
	* bow/libbow.h: Declare new function.

	* Makefile.preamble: Put file names in EXTRA_* variables.
	* Makefile.local (snapshot-all): New target, and support for this
	target.

1999-05-06  Kamal Nigam  <knigam@zeno.jprc.com>

	* maxent.c (maxent_gaussian_prior): New variable for gaussian
	prior option.
	(maxent_prior_variance): Likewise.
	(maxent_halt_accuracy_docs): New variable for new option
	--maxent-halt-by-accuracy
	(maxent_options,maxent_parse_opt,maxent_newton,
	maxent_calculate_accuracy,
	bow_maxent_new_vpc_with_weights_doc_then_word,
	bow_maxent_new_vpc_with_weights):
	Code for new options --maxent-halt-by-accuracy and
	--maxent-gaussian-prior and --maxent-prior-variance

1999-05-03  Robert Stockton  <rgs@jprc.com>
	
	Updated to run under GNU on win32
	* Makefile.preamble [WINNT]: Conditionalized Makefile.preamble to
	specify different switches and libraries for Win32.  This includes
	turning off the "hdb" support which requires unavailable libraries,
	and adding -liberty (sic) to enable deprecated features of the gnu
	command line parser. 
	* archer.c (archer_archive, archer_unarchive):  updated bow_fopen
	calls for data files to specify "binary" mode.  This should have no
	effect under UNIX, but is necessary for proper operation under win32.
	* arrow.c (arrow_archive, arrow_unarchive): likewise
	* barrel.c (bow_barrel_new_from_data_file): likewise
	* crossbow.c (crossbow_archive, crossbow_unarchive,
	  crossbow_index_multiclass_list, crossbow_index): likewise
	* int4word.c (bow_words_write_to_file, bow_words_read_from_fp,
	  bow_words_read_from_file, bow_words_reread_from_file): likewise
	* rainbow-h.c (hier_barrel_write_to_file, hier_barrel_new_from_file,
	  set_vocabulary_from_file): likewise
	* rainbow.c (rainbow_archive, rainbow_unarchive): likewise
	* wi2dvf.c (bow_wi2dvf_write_data_file,
	  bow_wi2dvf_new_from_data_file): likewise
	* wi2pv.c (bow_wi2pv_new, bow_wi2pv_write_to_filename,
	  bow_wi2pv_new_from_filename, bow_wi2pv_reopen_pv): likewise
	* arrow.c [WINNT] (#includes, arrow_socket_init):  Conditionalized
	socket code to deal with the lack of unix sockets under win32. 
	* rainbow.c [WINNT] (#includes, rainbow_socket_init): likewise
        * lex-gram.c (bow_lexer_gram_get_word): Fixed the BOW_MCHECK option so
	that it doesn't try to call "mprove" if the option is disabled.

	Fixed up demo script
	* demo-script: Rainbow no longer defaults to --test-set=0.30, so I
	explicitly added --test-set=0.34 to the command line.  (The value
	was changed to "1/3 of the data" to correspond to the print
	statements.)  
	* demo-script [WINNT]: Explicitly invoke perl for "rainbow-stats" so
	that the script should run better under win32 (while still working
	properly under unix). 
	
1999-04-29  Andrew McCallum  <mccallum@justresearch.com>

	* vpc.c (bow_barrel_new_vpc): Reset the word counts in the
	document barrel based on the (possibly reduced) vocabulary in
	training set, not in the training+test set.  This change has no
	effect on naive Bayes classification.

1999-04-27  Andrew McCallum  <mccallum@justresearch.com>

	* multiclass.c: New overhauled version that represents class sets
	sparsely.

1999-04-26  Andrew McCallum  <mccallum@justresearch.com>

	* hem.c (crossbow_hem_create_children_for_node): Copy word counts
	into WORDS, not NEW_WORDS, because then
	set_new_words_from_perturbed_words() will fill in NEW_WORDS by
	perturbing WORDS.  This was previously causing children to be set
	completely randomly!  (Bug reported by Doug Baker.)

	* bow/treenode.h (treenode): Add variables for holding LOO data in
	a file, but leave them commented out for now.

	* Makefile.local (CROSSBOW_C_FILES): Add lex-japanese.c.
	* Makefile.preamble (METHOD_C_FILES): Add lex-japanese.c and
	maxent.c.

	* istext.c (bow_is_text_always_yes): New global variable.
	(bow_fp_is_text): Obey it.
	* bow/libbow.h (bow_is_text_always_yes): Declare variable.

	* treenode.c (bow_treenode_set_leaf_prior_from_new_prior_all):
	Handle "/Misc/" nodes.

	* hem.c (crossbow_hem_lambdas_from_validation): New static
	variable.
	(crossbow_hem_options): New command-line option
	"hem-lambdas-from-validation".
	(crossbow_hem_parse_opt): Handle it.
	(crossbow_hem_em_one_iteration): Don't skip docs with validation tag
	and use them for setting lambda if
	CROSSBOW_HEM_LAMBDAS_FROM_VALIDATION.  Skip nodes named "Misc".
	Fix the end of the M-step so it works even if vertical word
	movement is turned off.
	(crossbow_hem_full_em): Set some of the unlabeled documents to
	validation documents if CROSSBOW_HEM_LAMBDAS_FROM_VALIDATION.
	(crossbow_hem_full_em): Print the leaf prior.
	(hem_cluster_method): Fix ordering.

1999-04-08  Kamal Nigam  <knigam@server8.jprc.com>

	* maxent.c (maxent_options): Added options --maxent-iterations,
	--maxent-keep-features-by-mi, --maxent-halt-by-logprob,
	--maxent-logprob-constraints, --maxent-smooth-counts,
	--maxent-scoring-hack.
	(maxent_parse_opt): Likewise
	(maxent_calculate_accuracy): takes extra argument; calculates accuracy
	or logprob.
	(maxent_prune_vocab_by_mutual_information): New function.
	(maxent_newton): New function.
	(bow_maxent_new_vpc_with_weights_doc_then_word): New function for
	document-then-word event model.  Code for new features.
	(bow_maxent_new_vpc_with_weights): Code for new features.
	(bow_maxent_score): Code for scoring hack option.
	(bow_method_maxent): changed prior function.

1999-03-30  Andrew McCallum  <mccallum@justresearch.com>

	Fix --gram-size so it works again.
	* opts.c (parse_bow_opt): Use the correct type to sizeof when
	allocating a lex for --gram-size.
	* lex-gram.c (bow_lexer_gram_open_text_fp): Realloc the LEX,
	making it big enough that we don't overrun the buffer malloced by
	bow_lexer_next_open_text_fp().  Note that this function passing
	SELF->NEXT, and thus uses the wrong SIZEOF_LEX when mallocing the
	lex it returns.  (In order to be properly object-oriented, we
	would need to separate object data from object methods a little
	more.)

	* crossbow.c (crossbow_classify_docs_in_dirname): Remove unused
	local variables.

1999-03-29  Andrew McCallum  <mccallum@justresearch.com>

	* hem.c (crossbow_hem_em_one_iteration): Calculate WORD_DEPOSIT
	and LAMBDA_DEPOSIT separately, and always deposit probability in
	the leaves and ancestors, even if we don't expect those
	distributions to change as a result.  Use or don't use
	ANCESTOR_MEMBERSHIP to ensure the right thing here, depending on
	CROSSBOW_HEM_VERTICAL_WORD_MOVEMENT.  Set NEW_LAMBDAS even if
	there is no shrinkge.  Always set WORDS from NEW_WORDS,
	independent of various CROSSBOW_HEM_* flag settings.  Don't ever
	use smoothing to set the lambdas.

	* crossbow.c (crossbow_classify_doc): Remove DI variable, and get
	WV more straightforwardly.

1999-03-29  Kamal Nigam  <knigam@server4.jprc.com>

	* crossbow.c (crossbow_classify_doc): initialize di to bogus
	value. Return a value.
	(crossbow_classify_tagged_docs): Count documents tested correctly.
	(crossbow_classify_docs_in_dirname): have classify_filename return
	a value. 

	* hem.c (iteration_limit): Removed.
	(crossbow_hem_em_one_iteration): Set words from new_words no matter
	what.  If no shrinkage, use prior.
	(crossbow_hem_full_em): If no shrinkage, initialize words using a
	prior, and set lambdas all at the leaves.  Use
	crossbow_hem_max_num_iterations to stop EM iterating.

1999-03-19  Kamal Nigam  <knigam@server4.jprc.com>

	* vpc.c (bow_barrel_new_vpc): added comment about setting
	cdoc->word_count.
	* maxent.c (maxent_num_iterations): new variable and code for
	option --maxent-iterations.
	(maxent_options): Likewise.
	(maxent_parse_opt): Likewise.
	(bow_maxent_new_vpc_with_weights): Likewise.  Also added correct
	normalization of step size (1/doc-length) when calculating
	delta_i.

1999-03-19  Kamal Nigam  <knigam@zeno.jprc.com>

	* maxent.c: initial checkin.

1999-03-17  Kamal Nigam  <knigam@server4.jprc.com>

	* em.c (em_parse_opt): change bow_cdoc_is_model to
	bow_cdoc_is_train

1999-03-19  Andrew McCallum  <mccallum@justresearch.com>

	* lex-suffixing.c (suffixing_snarf_suffix): Only include
	alphabetic characters in the prefix.  This way they can be
	included in queries.
	(bow_lexer_suffixing_postprocess_word): Exclude from the general
	non-suffixing indexing all lines with suffixes beginning with
	"reference"; not just the ones that match "reference" exactly.
	This way "Reference-contexts:" will also be excluded.

	* hem.c (crossbow_hem_max_num_iterations): New static variable.
	(crossbow_hem_options): New command-line option
	"hem-max-num-iterations". 
	(crossbow_hem_parse_opt): Handle it.
	(crossbow_hem_cluster): Obey it.

	* crossbow.c (crossbow_classify_doc): Correctly index WA->ENTRY
	when VERBOSE is 1.

1999-03-18  Andrew McCallum  <mccallum@justresearch.com>

	* archer.c (archer_index_filename): Close FP before returning 0 if
	LEX is NULL.  Otherwise we leave too many files open.

	* crossbow.c (crossbow_print_matrix): New function.
	(crossbow_options): New command-line option "print-matrix".
	(crossbow_parse_opt): Handle it.

1999-03-17  Andrew McCallum  <mccallum@justresearch.com>

	* opts.c (parse_bow_opt) [LEX_SUFFIXING_KEY]: Set the ULEX->NEXT
	*after* we do the memcpy so it doesn't get overridden.
	* lex-suffixing.c (bow_lexer_suffixing_open_text_fp): Return 0 if
	the first line doesn't have a header.
	(bow_lexer_suffixing_postprocess_word): Make an initial attempt at
	handling multi-line email headers in which the second line begins
	with a tab.
	(bow_lexer_suffixing_get_word): Explicitly check the DOCUMENT_POSITION
	to see if we are at the end of the file.

	* treenode.c (bow_treenode_set_lambdas_from_new_lambdas): If macro
	MISC_STAYS_FLAT is non-zero, then if the tree contains "/Misc/",
	set the lambdas to uniform.

1999-03-17  Kamal Nigam  <knigam@zeno.jprc.com>

	* bow/naivebayes.h (bow_naivebayes_pr_wi_ci): Made public

	* bow/libbow.h (bow_dv_set_di_count_weight): New prototype.
	(bow_wi2dvf_set_wi_di_count_weight): New prototype.

	* wi2dvf.c (bow_wi2dvf_set_wi_di_count_weight): New function.
	Like add_wi_di_count_weight but sets the value directly.
	* dv.c (bow_dv_set_di_count_weight): New function.  Like
	add_di_count_weight, but sets it directly.

	* em.c (em_print_correct): Removed.  Generalized this to
	em_halt_using_accuracy and em_accuracy_docs and em_accuracy_loo,
	to allow for arbitrary sets of documents to be used for halting by
	accuracy.  Added options (--em-halt-using-accuracy and
	--em-print-accuracy) and code for this.  Also generalized
	em-halt-using-perplexity in a similar fashion.  Generalized
	em_test_accuracy to em_calculate_accuracy.
	(em_halt_using_accuracy): Likewise
	(em_accuracy_docs): Likewise.
	(em_accuracy_loo): Likewise.
	(em_options): Likewise.
	(em_parse_opt): Likewise.
	(bow_em_new_vpc_with_weights): Likewise.
	(em_calculate_accuracy): Likewise.
	(em_test_accuracy): Likewise.
	(bow_em_score): Likewise.   Changed for accuracy-loo

1999-03-16  Andrew McCallum  <mccallum@justresearch.com>

	* treenode.c (bow_treenode_set_words_from_new_words): Change logic
	around setting TN->NEW_WORDS_NORMALIZER.  Obey MISC_STAYS_FLAT
	macro.

	* multiclass.c (multiclass_score): New type.
	(multiclass_classify_doc): Use it.  Sort scores after evaluating
	class sets of size one.  Potentially use this to prune the set
	tried with larger combinations.
	(multiclass_classify_doc_into_single_class): New function.  Unused.
	(multiclass_cis_is_in_top): New function.  Unused.
	(compare_multiclass_scores): Renamed from nested function.

	* hem.c (crossbow_hem_garbage_collection): New static variable.
	(crossbow_hem_options): New command-line option
	"hem-garbage-collection". 
	(crossbow_hem_parse_opt): Handle it.
	(crossbow_hem_full_em): Add /Misc/ nodes if doing statistical garbage
	collection.

1999-03-13  Andrew McCallum  <mccallum@justresearch.com>

	* multiclass.c (MAX_CLASSES): Increase from 20+1 to 100+1.
	(multiclass_log_prob_of_classes_given_doc): Backoff MIXTURE if there
	is no local data available.
	(multiclass_classify_doc): Malloc score instead of alloca'ing, because
	it can now be bigger than the stack.

1999-03-12  Andrew McCallum  <mccallum@justresearch.com>

	* rainbow.c (rainbow_options): Command-line option
	"index-printed-barrel" name changed to "index-matrix", to match
	"print-matrix".  (Reported by Doug Baker.)

1999-03-06  Andrew McCallum  <mccallum@justresearch.com>

	* bow/treenode.h: Fix typo in #ifndef at top of file.  Include
	<bow/libbow.h>.  Declare new functions.

	* bow/libbow.h (BOW_DEFAULT_FILE_FORMAT_VERSION): Bumped from 6 to
	7.  Crossbow now writes multiclass "CIS" information, and also
	explicitly writes the CROSSBOW_CLASSES_COUNT.

	* bow/crossbow.h (crossbow_doc): Add elements CIS_SIZE and CIS to
	hold multiclass information.
	(crossbow_method):  Add index and clasify_doc functions.

	* treenode.c: Replace free() with bow_free().
	(bow_treenode_realloc_words_all): New function.
	(bow_treenode_free_loo_and_new_loo): New function.
	(bow_treenode_free_loo_and_new_loo_all): New function.
	(bow_treenode_set_words_from_new_words): Comment out part of
	MISC_STAYS_FLAT code that was zero'ing NEW_WORDS_NORMALIZER.  This
	was messing up LOO processing, and I didn't understand why it was
	done in the first place.
	(bow_treenode_set_prior_from_new_prior_all): New function.
	(bow_treenode_set_prior_and_extra_from_new_prior_all): New function.
	(bow_treenode_pr_wi_loo_local): Add more assertions.

	* rainbow.c (rainbow_test): Use bow_cdoc_is_train instead of old
	bow_cdoc_is_model.

	* hem.c: Use new crossbow_classify_tagged_docs arguments.  Add
	elements to crossbow_method instances.

	* crossbow.c (struct crossbow_arg_state): New member
	MULTICLASS_LIST_FILENAME.
	(crossbow_doc_write): If BOW_FILE_FORMAT_VERSION >= 7, write the CIS
	information.
	(crossbow_doc_read): Likewise for reading.
	(crossbow_archive): Explicitly write the CROSSBOW_CLASSES_COUNT.
	(crossbow_unarchive): If available, read it.
	(crossbow_index_filename): New function, split out from
	crossbow_index().
	and its embedded function write_wv_to_fp().
	(crossbow_index_multiclass_list): New function.
	(crossbow_index): Use crossbow_index_filename.
	(crossbow_classify_doc): New function, split out from
	crossbow_classify_tagged_docs().
	(crossbow_classify_tagged_docs): Use it.
	(crossbow_classify_docs_in_dirname): Likewise.
	(crossbow_classify): Use the method's TRAIN_CLASSIFIER.
	(crossbow_options): New command-line argument "index-multiclass-list".
	(crossbow_parse_opt): Handle it.
	(main): Don't unarchive if doing crossbow_index_multiclass_list.

	* Makefile.local (CROSSBOW_C_FILES): Added multiclass.c.

1999-02-25  Andrew McCallum  <mccallum@justresearch.com>

	* bow/crossbow.h (crossbow_method): Removed classify function,
	added cluster function

	* hem.c: Various bow_doc fixes.
	(hem_cluster_method, hem_classify_method, hem_fienberg_method): New
	method structures.
	(_register_method_hem): Implemented.

	* crossbow.c (crossbow_classify_all_docs): Deleted function.
	(crossbow_classify_tagged_docs): Add new argument FILE *out.
	(crossbow_cluster): Use new method function.
	(crossbow_classify): Likewise.
	(main): Fix for new lexer organization.

	* next.c (bow_cdoc_is_train): Renamed from bow_cdoc_is_model.  All
	callers changed.

	* active.c: Use renamed function bow_cdoc_is_train instead of
	bow_cdoc_is_model.

	* mix.c: Use renamed function bow_cdoc_is_train instead of
	bow_cdoc_is_model.

	* em.c (em_parse_opt): Use renamed function bow_cdoc_is_train.

	* methods.c (bow_method_register_with_name): Add new parameter
	SIZE.  All callers changed.

	* readme.texi: Add required --test-set=0.5

1999-02-23  Sean Slattery  <jslttery@rote.learning.cs.cmu.edu>

        * rainbow-ac.pl: As with rainbow-pr.pl. Binning is going to work
        interestingly here....

	* rainbow-pr.pl: Updated so that points are not output in the
	middle of a run of predictions with the same confidence.

1999-02-21  Jason Rennie  <jrennie@data.jprc.com>

	* rainbow.c: don't seg fault if the rainbow_doc_barrel is NULL

1999-02-20  Sean Slattery  <jslttery@rote.learning.cs.cmu.edu>

        * knn.c (bow_knn_normalise_weights): Cosine normalisation is by
        vector length and not by summing. The query normalisation was fine.

        * knn.c: Added lots more documentation. Made the weight entry of
        each term in each document have the required IDF factored
        in. Needed to do this so the cosine normalisation would do the
        right thing. Much happier that this implementation is closer to
        correct. Also took out the score normalisation at the end.

1999-02-18  Andrew McCallum  <mccallum@justresearch.com>

	Lexer's reorganized.  bow_lexer_simple and bow_lexer_indirect
	removed.  bow_lexer now has NEXT pointer, so all lexer's can be
	chained.  Many lexing parameters now in global variables
	bow_lexer_* declared in lex-simple.c; this way when --lex-white
	follows --skip-headers, the default DOCUMENT_START_PATTERN in
	--lex-white doesn't override the --skip-headers option.  Order of
	lexer's still matters when chaining, like: --lex-white --skip-html
	--lex-suffixing.

	* Makefile.in (STANDARD_LIBBOW_C_FILES): Remove lex-indirect.c.
	Add lex-next.c.

	* opts.c (bow_options): New command-line options "shortest-word"
	and "lex-alphanum".
	(parse_bow_opt): Handle them, and update to new lexer organization.

	* lex-suffixing.c: Updated for new lexer organization.
	* lex-simple.c: Likewise.
	* lex-html.c: Likewise.
	* lex-gram.c: Likewise.
	* deflexer.c: Likewise.
	* rainbow.c: Likewise.
	* arrow.c: Likewise.
	* lex-indirect.c: Half-way updated, and then deleted in favor of
	lex-next.c.

	* bow/libbow.h: Updated for new lexer organization.
	(bow_realloc_hook): Declared new function pointer.
	(bow_realloc): Call new hook instead of malloc's hook.
	* bmalloc.c (_bow_realloc_hook): New function.
	(bow_realloc_hook): New global variable.

	* methods.c (bow_method_register_with_name): When creating the
	sarray, allow space of size rainbow_method, not bow_method.  This
	needs to be fixed further to make any size possible.

	* barrel.c (bow_barrel_new_from_data_fp): Use bow_free() instead
	of free().

	* archer.c (struct archer_arg_state): New element
	SCORE_IS_RAW_COUNT.
	(archer_index_lines): New function.
	(archer_query_hits_matching_sequence): Use new stoplist global
	variable. 
	Only scale if SCORE_IS_RAW_COUNT is non-zero.
	(archer_options): New command-line options "index-lines" and
	"score-is-raw-count".
	(archer_parse_opt): Handle them.
	(main): Likewise.

1999-02-12  Andrew McCallum  <mccallum@justresearch.com>

	* active.c, archer.c, arrow.c, barrel.c, crossbow.c, em.c, evi.c,
	goodturing.c, hem.c, kl.c, knn.c, methods.c, mix.c, naivebayes.c,
	prind.c, rainbow-h.c, rainbow.c, split.c, tfidf.c, crossbow.h,
	em.h, kl.h, knn.h, libbow.h, naivebayes.h, prind.h, tfidf.h,
	treenode.h: Separate bow_method from rainbow_method.  New
	structure rainbow_method.  New structure crossbow_method.

1999-02-01  Andrew McCallum  <mccallum@justresearch.com>

	* hem.c (crossbow_hem_consider_splitting): Fix memory leak by
	freeing the GRANDPARENTS array.

1998-12-17  Andrew McCallum  <mccallum@justresearch.com>

	* naivebayes.c
	(bow_naivebayes_set_cdoc_word_count_from_wi2dvf_weights):
	Initialize num_words_per_ci[] to zero.

1998-11-29  Andrew McCallum  <mccallum@justresearch.com>

	* crossbow.c (struct crossbow_arg_state): Add members PRINTING_TAG
	and CLASSIFY_FILES_DIRNAME.
	(crossbow_classify_tagged_docs): Renamed from
	crossbow_classify_test_docs.
	(crossbow_classify_docs_in_dirname): New function.
	(crossbow_classify): Insist on either restricted or deterministic
	horizontal.  Handle CLASSIFY_FILES_DIRNAME.
	(crossbow_print_doc_names): New function.
	(crossbow_options): New command-line options "classify-files" and
	"print-doc-names".
	(crossbow_parse_opt): Handle them.

	* hem.c (SHRINK_WITH_UNIFORM_ONLY): Change from 1 to 0; i.e. set
	back to default.
	(iteration_limit): Change from 3 to 999.
	(crossbow_hem_options): Add command-line options for
	"hem-deterministic-horizontal" and "hem-restricted-horizontal".
	(crossbow_hem_parse_opt): Handle them.
	(crossbow_hem_unlabeled_perplexity): Add a test for -Inf.
	(crossbow_hem_em_one_iteration): Handle both labeled and unlabeled
	documents.  Handle "resticted-horizontal" case.  Verbosify how
	many documents were incorporated.
	(crossbow_hem_cluster): Handle both labeled and unlabeled documents.
	(crossbow_hem_full_em): Add "Misc" children.  Add commented-out code
	for semi-labeled data.
	(crossbow_hem_fienberg_treenode): Add #if'ed code for
	SHRINK_WITH_UNIFORM_ONLY.

	* treenode.c (bow_treenode_add_misc_child_all): New function.
	(bow_treenode_set_words_from_new_words): Add special case for
	"Misc" nodes.

	* split.c (bow_tag_docs): New function.
	(bow_tag_change_tags): New function.
	* bow/libbow.h (bow_tag_docs): Declare new function.
	(bow_tag_change_tags): Likewise.

1998-11-14  Jason Rennie  <jrennie@cyclone.jprc.com>

	* rainbow.c (bow_print_log_odds_ratio): print to stdout

	* rainbow.c (bow_print_log_odds_ratio): new function
	(rainbow_parse_opt): add --print-log-odds-ratio option

1998-11-13  Andrew McCallum  <mccallum@justresearch.com>

	* archer.c (archer_query_server_process_commands): Use different
	prefix for pre-fork and post-fork commands, so we don't try to
	handle a post-fork as a pre-fork.
	(archer_query): Fix bug that caused crash when a +term was the only
	term.

1998-11-12  Andrew McCallum  <mccallum@justresearch.com>

	* archer.c (archer_query): Print commas between query terms.

	* lex-suffixing.c (bow_lexer_suffixing_postprocess_word): Skip the
	Reference: words the second time through.

1998-11-11  Jason Rennie  <jrennie@cyclone.jprc.com>

	* rainbow.c (rainbow_query): check rainbow_doc_barrel; free query
	word vector

1998-11-09  Andrew McCallum  <mccallum@justresearch.com>

	* archer.c (archer_docs): Change from a bow_array to a bow_sarray,
	so we can keep track of filenames.  All relevant functions
	changed.
	(archer_archive): Flush archer_wi2pv's FP.
	(archer_index_filename): New function, moved out of archer_index.
	Don't raise an error if the file doesn't exist.
	(archer_index): Call it.
	(archer_delete_filename): New function.
	(archer_query_server_process_commands): New argument
	DOING_PRE_FORK_COMMANDS.  Add new commands for adding and removing
	files.
	(archer_query_serve_one_query): Process commands before and after
	forking.

	* sarray.c (bow_sarray_entry_at_keystr): If the KEYSTR is not
	present, don't raise an error, just return NULL.

1998-11-05  Andrew McCallum  <mccallum@justresearch.com>

	* pv.c (bow_pv_max_sizeof_di_pi): Redefined for smaller number of
	bits, since we are now using 7 bits in the IS_MORE bytes, instead
	of just 6.
	(bow_pv_write_unsigned_int): Updated to write 7 bits in the secondary
	"IS_MORE" bytes.
	(bow_pv_read_unsigned_int): Likewise for reading.
	(PV_WRITE_SIZE_INT): New macro.  Unused.
	(bow_pv_write_size_di_pi): New function.  Unused.
	(bow_pv_read_size_di_pi): Likewise.
	* bow/archer.h: Remove declaration of functions that are now
	defined static in pv.c.
	(bow_pe): Add entry BITS_MORE.

	* wi2pv.c (bow_wi2pv_print_stats): Rename COUNT_HISTOGRAM to
	WORD_COUNT_HISTOGRAM, in anticipation of histogramming the number
	of bytes per pv entry also.

	* rainbow.c (main): Fix handling of TAG in doc name printing.

	* split.c (bow_files_source_type): Added two new types:
	bow_files_source_fraction_remaining, and
	bow_files_source_number_remaining.
	(bow_split_options): Update documentation.
	(bow_split_parse_opt): Handle new source types.
	(bow_set_doc_types_randomly_by_count): New option
	TAKE_PROPORTION_FROM_REMAINING.  Revert to pre-1998-10-21 behavior
	if this is zero.
	(bow_set_doc_types_randomly_by_fraction_remaining): New function.
	(bow_set_doc_types): Change the order of operations slightly.  Instead
	of doing all non-filename options together, do first the options
	that specify the number of documents per class, then do the ones
	that select the number of documents per class randomly according
	to some proportion.

1998-11-01  Andrew McCallum  <mccallum@justresearch.com>

	* pv.c (bow_pv_write_unsigned_int): Make it a static inline
	function, for speed.
	(bow_pv_read_unsigned_int): Likewise.
	(bow_pv_write_next_di_pi): Likewise.
	(bow_pv_read_next_di_pi): Likewise.

	* archer.c (archer_index): Pass just a filename, not a directory
	name to bow_wi2pv_new().
	(archer_query_hits_matching_sequence): New argument SUFFIX_STRING.
	All callers changed.  Properly tell the difference between a word
	that doesn't appear and a stopword.  Make a little more efficient.
	(archer_query): Parse things like `title:foo'.
	(archer_query_serve_one_query): Process special comands like ,HITS
	before any query, not just the first.
	(archer_options): Remove "compare" option.

1998-10-21  Andrew McCallum  <mccallum@justresearch.com>

	* split.c (bow_set_doc_types_randomly_by_count): When determining
	how many documents are available, instead of skipping only the
	ignore documents, skip all the non-untagged documents.  This fixes
	a bug whereby there are not enough documents left to label.  Don't
	arbitrarily add one to the number of document to be tagged when
	the ratio-indicated number is zero.  When adding more documents to
	the per-class counts to be tagged, make sure there are untagged
	documents available in that class.

1998-10-16  Andrew McCallum  <mccallum@justresearch.com>

	* rainbow-h.c: All these changes actually made on or before Jun 26
	1998.
	(hier_barrel): Add di4filename.  Change CLASS_WORD_COUNT and
	DOC_WORD_COUNTS from ints to floats.
	(hier_barrel_new): Initialize di4filename.
	(hier_barrel_set_class_word_count): Use the CDOC->NORMALIZER instead
	of the CDOC->WORD_COUNT.
	(hier_barrel_set_class_word_count): New function.  Commented out.
	(hier_barrel_set_class_barrel_cdoc_normalizer_to_word_count): New
	function. 
	(hier_barrel_total_of_cdoc_word_counts): Function removed.
	(hier_barrel_correct_cdoc_prior): Set the CDOC->NORMALIZER in the
	class barrel, so we can use them to reset the WORD_COUNT's.  Do it
	by calling new function.
	(hier_barrel_set_class_model_from_new_class_wi2dvf): Call new function.
	(hier_barrel_free): Free HBARREL->NEW_CLASS_WI2DVF.
	(rainbowh_set_total_num_words): Remove function.
	(hier_barrel_prob_wi_in_ci_local): Make some changes for full_em.
	(hier_barrel_prob_wi_local): Likewise.
	(hier_barrel_calc_lambda_one_iteration): Add #error.
	(hier_barrel_all_reset_doc_word_count_from_loo_doc_wi2dvf): New
	function. 
	(hier_barrel_calc_lambdas_all_nodes): Do more updates at top of
	while() loop and add comments.
	(rainbowh_unarchive): Deal with di4filename.

1998-10-15  Andrew McCallum  <mccallum@justresearch.com>

	* archer.c (archer_query_serve_one_query): When forking, in the
	child, reopen the wi2pv PV FILE* so we get our own lseek()
	position.
	* bow/archer.h (bow_wi2pv_reopen_pv): Declare new function.
	* wi2pv.c (bow_wi2pv_reopen_pv): New function.

	* dice.c: New file.

	* hem.c (SHRINK_WITH_UNIFORM_ONLY): New macro.
	(PRINT_WORD_DISTS): New macro.
	(iteration_limit): New variable.  (temporary).
	(crossbow_hem_full_em): Use SHRINK_WITH_UNIFORM_ONLY and
	PRINT_WORD_DISTS.  Use iteration_limit.
	(crossbow_hem_fienberg_treenode): Use SHRINK_WITH_UNIFORM_ONLY and
	PRINT_WORD_DISTS.  Also print results with several fixed lambdas.

	* crossbow.c (struct crossbow_arg_state): New member
	PRINT_FILE_PREFIX.
	(main): Initialize new member.
	(crossbow_print_word_probabilities): New function (not complete).
	(crossbow_options): New option "print-word-probabilities".
	(crossbow_parse_opt): Handle it.

	* treenode.c (bow_treenode_free_loo): No longer declared static.
	(bow_treenode_free_loo_all): New function.
	(bow_treenode_set_new_words_to_zero): New function.
	(bow_treenode_print_all_word_probabilities_all): New function.
	* bow/treenode.h: Declare new functions.

	* kl-div.c (main): Handle new command-line argument -l, for "Larry
	Wasserman's Loss function".  Implement it.

	* archer.c (archer_query_hits_matching_sequence): Change scaler.
	(archer_query): Make a local copy of ARCHER_ARG_STATE.QUERY_STRING and
	replace the trailing newline and carriage return with \0.

	* archer.c (archer_query_hits_matching_sequence): Add 1 to avoid
	dividing by zero.

1998-10-15  Jason Rennie  <jrennie@cyclone.jprc.com>

	* Makefile.preamble (-DVPC_ONLY): new define

	* vpc.c (bow_barrel_new_vpc): set IS_VPC to 1

	* rainbow.c (rainbow_index): allow possibility of building only
	class barrel in order to reduce memory consumption; add checks to
	make sure that rainbow_doc_barrel is not NULL before we try to use it
	(rainbow_options): add vpc-only option

	* hdb-bow.c (bow_barrel_add_from_hdb): if barrel has is_vpc set,
	build a multinomial class barrel instead of a document barrel

	* barrel.c (bow_barrel_add_from_text_dir): if barrel has is_vpc
	set, build a multinomial class barrel instead of a document barrel
	(bow_barrel_new): set IS_VPC to 0

1998-10-14  Andrew McCallum  <mccallum@justresearch.com>

	* hem.c (crossbow_hem_unlabeled_perplexity): New function.
	(crossbow_hem_labeled_perplexity): New function.
	(crossbow_hem_place_labeled_data): Clear old data and LOO info before
	placing the new.  Use new functions.

	* archer.c (archer_query_hits_matching_wi): New function.
	(archer_query_hits_matching_sequence): Use it.  Improve efficiency of
	wi2pv searching.  Use new bow_wa function.
	(archer_query): Remove trailing \n from query terms.
	* wa.c (bow_wa_add_to_end): New function.
	* bow/libbow.h: Declare new function.

	* archer.c (archer_query_hits_matching_sequence): Change the
	weight-setting method to encourage documents that have all query
	term to be ranked above documents that have many repetitions of a
	few terms.
	(archer_query): Fix it so it works with queries that don't have a
	+term.  Free all the temporary space that was allocated.  Print
	the +terms as well as the others.

	* wi2pv.c (bow_wi2pv_new): Instead of saving an absolute pathname
	(and allowing the PV_FILENAME argument to contain '/'s), expect
	PV_FILENAME to be just a filename, and save it only.  Use
	BOW_DATA_DIR as the directory location in which to place the
	PV_FILENAME.
	(bow_wi2pv_new_from_filename): Support the new behavior of
	bow_wi2pv_new.  (Although old models are temporarily supported by
	use of a hack.)

	* naivebayes.c (bow_naivebayes_set_weights): Remove restriction
	that we have less than 200 classes.

	* archer.c (archer_query): Combine results of query terms more
	efficiently.  Print the words that occur in each hit.  Currently
	only works if there is a +term.

1998-10-13  Andrew McCallum  <mccallum@justresearch.com>

	* archer.c (archer_query_hits_matching_sequence): Remove yyparse
	code.  Add code to parse +, - and "" in C.  Gather results in
	various bow_wa arrays, and combine them with the correct
	semantics.
	* Makefile.local (archer): Remove dependence on query* files.

	* wa.c (bow_wa_weight): New function.
	(bow_wa_union): New function.
	(bow_wa_intersection): New function.
	(bow_wa_overlay): New function.
	(bow_wa_diff): New function.
	* bow/libbow.h: Declare new functions.

	* lex-suffixing.c: Whenever calling *lexer_simple_* functions,
	pass BOW_DEFAULT_LEXER_SIMPLE instead of SELF.
	(HEADER_TWICE): New macro.  When this macro is non-zero, read the
	headers twice, once adding the suffixes, once not.

1998-10-13  Jason Rennie  <jrennie@cyclone.jprc.com>

	* configure.in: AC_HAVE_LIBRARY(socket) changed to
	AC_CHECK_LIB(socket,main)

1998-10-09  Peter Su  <Peter Su <psu@jprc.com>

	* configure.in: added check for YACC
	* query.h: New file. header file for query demo.
	* Makefile.in: Added rules for building query demo
	* query_main.c: New file, short demo for parser
	* query_lex.l: New file
	* query_parse.y: New file for parsing boolean queries

1998-10-08  Jason Rennie  <jrennie@cyclone.jprc.com>

	* Makefile.in: define ALL_LIBS before Makefile.preamble is
	included
	* Makefile.in (kl-div): don't use ALL_LIBS; kl-div doesn't depend
	on libargp
	* Makefile.in: do STANDARD_ trick with LIBBOW_C_FILES and
	LIBBOW_H_FILES to exclude HDB stuff from distribution
	* configure.in: Add check for -lsocket.  Needed for Solaris
	* opts.c: add #if HAVE_HDB checks
	* rainbow.c: add #if HAVE_HDB checks
	* arrow.c: add #if HAVE_HDB checks
	* Makefile.in: Remove all mentionings of HDB
	* int4word.c (bow_words_add_occurrences_from_hdb): moved to
	hdb-bow.c
	* docnames.c (bow_map_filenames_from_hdb): moved to hdb-bow.c
	* hdb-bow.c: new file
	* barrel.c (bow_barrel_add_from_hdb): move to hdb-bow.c
	* Makefile.preamble: add HDB-specific compilation definitions

1998-10-08  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_random_seed): Renamed from bow_split_seed.
	* random.c (bow_random_set_seed): Rename bow_split_seed to
	bow_random_seed.
	* opts.c (parse_bow_opt): Rename bow_split_seed to
	bow_random_seed.

	* hem.c (crossbow_hem_create_children_for_node): Use
	bow_treenode_set_new_words_from_perturbed_words() instead of the
	previous direct use of bow_random_double.
	(crossbow_hem_classification_perplexity): New function.
	(crossbow_hem_em_one_iteration): When calculating perplexity, and
	adding the contribution from this leaf, don't add it if
	LEAF_MEMBERSHIP[LI] is zero.  This avoid adding infinity.
	(crossbow_hem_cluster): After perturbing the leaves (which happens
	after EM convergence), don't smooth the new WORDS distribution.
	Previously called ...set_words_from_new_words_all() with alpha=1.
	(crossbow_hem_full_em): When printing "pp", use "classification
	perplexity" instead of "perplexity".

1998-10-07  Andrew McCallum  <mccallum@jprc.com>

	* archer.c (archer_print_word_stats): New function.
	(archer_options): New command-line argument "print-word-stats".
	(archer_parse_opt): Handle it.
	(main): Check to see if WHAT_DOING is NULL, and complain if so.
	* wi2pv.c (bow_wi2pv_print_stats): New function.
	* bow/archer.h: Declare new function.

	* wi2pv.c (bow_wi2pv_new): Convert PV_FILENAME to an absolute
	pathname before saving it.  This way, an archived model can be
	used when running archer from a different CWD from which the index
	was built.

	* stopwords.c (_bow_builtin_stopwords_shorter): New global
	variable.

1998-10-06  Andrew McCallum  <mccallum@jprc.com>

	* wa.c (bow_wa_add): New function.
	(bow_wa_add_wa): New function.
	* bow/libbow.h: Declare new functions.

	* wi2pv.c (bow_wi2pv_wi_count): New function.
	* bow/archer.h: Declare new functions.

	* pv.c (bow_pv_next_di_pi): Exchange the order of "end of PV
	checking" and "unnext checking" to fix bug whereby BOW_PV_REWIND()
	wasn't working.

	* archer.c: Make is work as a server over a socket, like arrow.
	Separate the query handling into two functions, in preparation for
	having a query parser.

	* Makefile.local (archer): New target.
	* pv.c, wi2pv.c, archer.c, bow/archer.h: New files.  Wow, all this
	code written in just 4 hours.

1998-09-30  Jason Rennie  <jrennie@cyclone.jprc.com>

	* configure.in: new compatibility checks
	* split.c (bow_split_parse_opt): use strchr instead of index
	(STANDARDS suggests strchr)
	* em.c, mix.c, active.c: change "//" to "/* */" (some older compilers
	don't know about //)
	* split.c (bow_split_parse_opt): use hack if index() doesn't exist
	* em.c (random01): removed; replaced calls with bow_random_01
	(random_double): removed; replaced calls with bow_random_double
	* active.c (active_select_stream_kl): use bow_random_double where
	appropriate.
	* random.c: check for gettimeofday() and RAND_MAX.  Use simple
	workarounds if not defined
	* lex-simple.c (bow_lexer_simple_open_text_fp) [!HAVE_SETENV]:
	complain and die.
	* bow/libbow.h [__linux__]: redefine assert (re-definition
	on SunOS causes problems)
	(assert): insert comma bettween __STRING(expr) and __FILE__
	to prevent nastiness.  Must have been inadvertently removed earlier.
	[!HAVE_STRCHR, !HAVE_STRRCHR]: redefine as index, rindex
	[!HAVE_RANDOM, !HAVE_SRANDOM]: redefine as rand, srand.
	
1998-09-29  Jason Rennie  <jrennie@cyclone.jprc.com>

	* hdb.c [!HAVE_STRERROR]: redefine as ""
	* configure.in: check for strerror

1998-09-28  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_options): Add optional argument to
	"print-doc-names" that specifies the document type (tag = train,
	test,..) to print.
	(rainbow_parse_opt): Handle it.
	(main): Likewise.

	* bow/libbow.h (bow_str2type): New macro.

	* Makefile.in: Undo changes that added crossbow to the snapshot
	distribution.  It's not yet ready to go out.
	(LIBBOW_H_FILES): Remove bow/crossbow.h and bow/treenode.h.
	(CROSSBOW_C_FILES): Remove variable.
	(OTHER_C_FILES): Remove crossbow.c.
	(all): Remove crossbow.
	(DIST_FILES): Remove $(CROSSBOW_C_FILES).

1998-09-28  Jason Rennie  <jrennie@cyclone.jprc.com>

	* knn.c (bow_knn_score): calculate and return class scores (same
	as before last modification)

	* rainbow.c (rainbow_query): always print class names instead of
	relying on cdoc names

1998-09-25  Andrew McCallum  <mccallum@jprc.com>

	* int4str.c (_str2id): Fix bug whereby returned value may be
	negative or zero! (Reported by Jason Rennie.)

	* hem.c (crossbow_hem_full_em): Print the train- and test-pp for
	the "No Shrinkage" case also.
	(LOG_LOSS): New macro.
	(crossbow_hem_fienberg_treenode): Conditioned on above macro,
	implement lambda-calculation with a log log function.

1998-09-24  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c (CLASSES_FROM_DIRS): New macro.
	(crossbow_index): In embedded function write_wv_to_fp() extract the
	directory name from the FILENAME, and use it to determine the
	class index of the DOC.  Count the number of classes from the
	number of different dir names found in the embedded function.
	(crossbow_classify): Temporarily use crossbow_hem_fienberg() instead
	of crossbow_hem_full_em().

	* hem.c (crossbow_hem_full_em): Instead of printing "Initial Flat
	Distribution", print the more precise message "No Shrinkage".
	(crossbow_hem_fienberg_treenode): New function.
	(crossbow_hem_fienberg): New function.

	* treenode.c (bow_treenode_set_lambdas_leaf_only): New function.
	(bow_treenode_set_lambdas_leaf_only_all): New function.
	* bow/treenode.h: Declare new functions.

	* split.c (bow_set_doc_types_randomly_by_count_per_class): Print
	the total number of documents tagged.

1998-09-21  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_doc_type): Reorder the enumeration so that the
	numbers match those of old archived barrels.  (Bug reported by
	Kamal Nigam and Jason Rennie.)

1998-09-18  Andrew McCallum  <mccallum@jprc.com>

	* hem.c (crossbow_hem_options): Explain more defaults.

	* rainbow.c (rainbow_options): Rename "print-barrel" to
	"print-matrix".  Leave "print-barrel" as a hidden alias.

1998-09-17  Andrew McCallum  <mccallum@jprc.com>

	* Makefile.in: Add crossbow the the snapshot distribution.
	(OTHER_C_FILES): Add crossbow.c.
	(LIBBOW_H_FILES): Add bow/crossbow.h and bow/treenode.h.
	(DIST_FILES): Add $(CROSSBOW_C_FILES).
	(all): Add crossbow.

	* bow/libbow.h (bow_cdoc): Reorder the variables so that the order
	of the first three matches that of crossbow_doc.
	(bow_doc): Add CLASS and FILENAME elements.
	* bow/crossbow.h (crossbow_doc): Reorder the variables so that the
	order of the first three matches that of bow_cdoc.

	* crossbow.c (main): Call bow_set_doc_types() only if not
	indexing.
	* hem.c: Turn of MN.  Use new bow_doc types instead of old
	crossbow tags.
	* mn.c (crossbow_hem_em_one_mn_iteration): Don't reset classes
	distribution unless CROSSBOW_CLASSES_COUNT is greater than 1.

	* rainbow.c: Fix some typos in calls to
	bow_set_doc_types_for_barrel().
	(rainbow_query): Remove use of knn_k.

	* crossbow.c (crossbow_classnames): New global variable.
	(crossbow_archive): Write it.
	(crossbow_unarchive): Read it.
	(crossbow_index): Initialize it.
	(struct crossbow_arg_state): Remove test_fraction.
	(crossbow_docs_split): Function removed.
	(crossbow_classify): Don't call removed function.
	(crossbow_options): "test-percentage" option removed.
	(crossbow_parse_opt): No longer handle it.
	(main): Call bow_set_doc_types() to do the test train splits.

	* em.c (bow_em_new_vpc_with_weights): Comment out unused variables
	to avoid warning.

	* split.c: All function names with bow_set_files_, changed to
	bow_set_doc_.  All functions that previously took a bow_barrel as
	an argument now take only the pieces of the barrel they need---so
	that crossbow can use these functions too.
	(bow_set_doc_types_for_barrel): New function that works like old
	bow_set_doc_types() function.
	* bow/libbow.h (bow_set_doc_types): New function declaration.
	(bow_set_doc_types_for_barrel): New function declaration.
	* rainbow.c (main): Call bow_set_doc_types_for_barrel() instead
	of set_doc_types().

1998-09-17  Jason Rennie  <jrennie@cyclone.jprc.com>

	* knn.c: make KNN_K static (local); need to change bow_knn_score
	so that it returns classes instead of k nearest documents

	* rainbow.c (rainbow_query): set NUM_HITS_TO_SHOW to KNN_K if
	method is "knn"

	* knn.c (bow_knn_get_k_best): fixed a bug in document shifting
	schema; return document score in bow_score array
	(bow_knn_score): clear away lots 'o unnecessary junk; expect
	calling function to allocate BSCORES; initialize BSCORES

1998-09-15  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_doc): New typedef.

1998-09-14  Andrew McCallum  <mccallum@jprc.com>

	* hem.c: Replace hem_ with crossbow_hem_.

	* Makefile.in (CROSSBOW_C_FILES): Renamed hac.c to hem.c.
	* hem.c: File renamed from hac.c.
	* crossbow.c: Replaced hac_ with hem_.

	* rainbow.c (rainbow_options): Changed "infogain-vector" to
	"print-word-infogain".  Changed "infogain-pair-vector" to
	"print-word-pair-infogain".  Changed "weight-vector" to
	"print-word-weights".  Changed "foilgain-vector" to
	"print-word-foilgain".
	(main): Call set_doc_types() once at beginning, unless doing
	RAINBOW_TESTING, which does its own call of this function.

	* libbow.texi (Overview): Added rough notes from Devika
	Subramanian.

	* bow/libbow.h (BOW_MINOR_VERSION): Updated from 8 to 9.

	* treenode.c hac.c crossbow.c bow/treenode.h: Changed treenode_ to
	bow_treenode_ in all function names.

1998-09-14  Kamal Nigam  <knigam@zeno.jprc.com>

	* bow/libbow.h (bow_wv_set_weights_to_count): Changed prototype.
	(bow_doc_type): Removed unused doc types and added validation type.
	(bow_method): Change prototype so set weights takes two arguments.
	(bow_wv_set_weights): Change prototype
	(bow_wv_set_weights_to_count): Likewise.
	(bow_wv_set_weights_by_event_model): New function.
	(bow_cdoc_is_ignored_model): Removed.
	(bow_cdoc_is_validation): New function.

	* em.c (bow_em_event_model_type): Removed.  Superceded by libbow
	event models.
	(M_EST_M): Removed.
	(M_EST_P): Removed.
	(WORD_PRIOR_COUNT): Removed.
	(bow_em_event_model): Removed.
	(bow_em_calculating_perplexity): New global for perplexity calculating
	hack.
	(binary_pos_ci): New global for binary classification hack.
	(em_halt_using_perplexity): New option variable.
	(em_perplexity_docs): Likewise.
	(em_perplexity_loo): Likewise.
	(bow_em_anneal_normalizer): Likewise.
	(em_options): Removed option --em-event-model.  New code for options
	em-halt-using-perplexity em-anneal-normalizer em-print-perplexity.
	(em_parse_opt): Likewise.
	(bow_cdoc_is_multi_hump_doc): New function.
	(bow_cdoc_is_train_or_unlabeled): New function.
	(bow_em_perturb_weights): Set the random seed.
	(bow_em_perturb_weights): Use the  real word_count in normalizer, not
	the integral one.
	(bow_em_new_vpc_with_weights): num_classes removed. binary_pos_ci
	moved to be a global.  *_class_map variables removed.  Use the
	real word_count in normalizer, not the integral one.  Remove
	infogain pruning; do this in rainbow.c.  Change calculation of
	word_count for documents to be correct.  Do not allow zero class
	probs when randomly choosing them for the EM starting point.  Add
	EM halting when the perplexity of some documents plateaus.  Create
	dv's for all words in the vocabulary so perplexity calculation
	does not get confused if words appear in only the doc barrel and
	not the class barrel.  Use libbow document event model and
	doc-then-word document length.  Use bow_em_set_weights (like
	bow_naivebayes_set_weights).  Calculate and print perplexity if
	necessary or requested.  Implement normalizer annealing.  Add
	multi-hump EM more naturally into the code.  Don't free the
	class_probs; may be used by LOO doc testing.  Update call to
	bow_em_score.
	(em_calculate_perplexity): New function.
	(bow_em_test_accuracy): Update call to bow_em_score.
	(bow_em_print_log_odds_ratio): Disable while normalizer is holding
	word_count info.
	(bow_em_set_priors_using_class_probs): Prime each class's count with
	1.
	(bow_em_pr_wi_ci): New function.
	(bow_em_set_weights): New function.
	(bow_em_score): New calling prototype to send loo class_probs pointer
	as an int.  Use bow_em_pr_wi_ci with loo functionality.  Add
	perplexity calculation hack to return perplexity of each class.
	Use libbow event models implicitly through bow_em_pr_wi_ci
	(bow_method_em): Change wv_set_weights to explicitly use the event
	model.
	
	* naivebayes.c (naivebayes_argp_m_est_m): Remove static so em.c
	can see.
	(M_EST_M): Removed.
	(M_EST_P): Removed.
	(bow_naivebayes_pr_wi_ci): Changed loo_wi_count and loo_w_count to
	floats to handle the document_then_word event model correctly.

	* bow/naivebayes.h (naivebayes_argp_m_est_m): Add prototype so
	em.c can use.

	* wv.c (bow_wv_set_weights_to_count): Add argument to match method
	prototype.
	(bow_wv_set_weights_by_event_model): New function.

	* split.c (bow_validation_files_source): New variable.
	(bow_validation_fraction): New variable.
	(bow_validation_number): New variable.
	(bow_validation_filename): New variable.
	(bow_validation_fancy_counts): New variable.
	(bow_split_options): New option --validation-set
	(bow_split_parse_opt): New option --validation-set
	(bow_split_parse_opt): New format for fancy counts: all ',' as
	delimiters.
	(bow_set_file_types_randomly_by_count_per_class): Print nice message
	to stderr.
	(bow_set_file_types_randomly_by_count): Ensure get at least document
	per class of training.
	(bow_set_files_to_type): Update nice message for stderr.
	(bow_set_file_types_of_remaining): Print nice message to stderr.
	(set_doc_types): handle validation set also.

	* rainbow.c (rainbow_test): Added special call for EM method to
	correctly handle EM-style LOO scoring.

	* next.c (bow_cdoc_is_ignored_model): Removed.
	(bow_cdoc_is_validation): New function.

	* knn.c (bow_knn_query_set_weights): Added argument to procedure
	to be compliant with new prototype for method

	* arrow.c (arrow_compare): Add argument to calls to
	bow_wv_set_weights_to_count.

1998-09-13  Andrew McCallum  <mccallum@jprc.com>

	* NEWS: Update with some new features in version 0.9.
	* Version (BOW_MINOR_VERSION): Changed from 8 to 9.
	* readme.texi: Update list of coming rainbow improvements.  Update
	web address for more information.
	* HACKING: Update GNU URL's and add parens to argp autoconf
	command.
	* install.texi: Remove unnecessary copyright notice.

	* Makefile.in (LIBBOW_H_FILES): Added bow/hdb.h.

1998-09-12  Andrew McCallum  <mccallum@jprc.com>

	* opts.c (bow_options): Changed the name of command-line option
	"split-seed" to "random-seed".

1998-09-08  Jason Rennie  <jrennie@cyclone.jprc.com>

	* wi2dvf.c (bow_wi2dvf_add_di_text_str): add lexer->close call to
	patch memory leak

1998-09-07  Jason Rennie  <jrennie@cyclone.jprc.com>

	* docnames.c, barrel.c, int4word.c: fix memory leak associated with
	HDB.

	* Change instances of "char" in function names to "str" for
	better description of functionality.

1998-09-04  Andrew McCallum  <mccallum@jprc.com>

	* opts.c (bow_options): Make the "lex-for-usenet" option hidden,
	since it is currently broken.

1998-09-03  Andrew McCallum  <mccallum@jprc.com>

	* Makefile.in (snapshot): Make ourselves more Y2K compliant :-) by
	including the first two digits of the year in the snapshot file
	name.

1998-08-24  Jason Rennie  <jrennie@cyclone.jprc.com>

	* bow/hdb.h: new file

	* bow/libbow.h: Added lots of function declarations

	* wi2dvf.c (bow_wi2dvf_add_di_text_char): new function

	* scan.c (bow_scan_char_for_string): new function

	* rainbow.c (rainbow_test_files): Split test_file into test_file,
	test_hdb_file and process_wv; call HDB functions when BOW_HDB is
	set.
	(rainbow_index): Call HDB functions when BOW_HDB is set.

	* opts.c (parse_bow_opt): Added --hdb option with key HDB_KEY

	* lex-suffixing.c (bow_lexer_suffixing_open_char): new function
	(_bow_suffixing_lexer): new field: bow_lexer_suffixing_open_char

	* lex-simple.c (bow_lexer_simple_open_char): new function
	(_bow_white_lexer, bow_alpha_only_lexer, bow_alpha_lexer):
	new field: bow_lexer_simple_open_char

	* lex-indirect.c (bow_lexer_indirect_open_char): new function

	* lex-html.c (_bow_html_lexer): new field:
	bow_lexer_simple_open_char

	* lex-gram.c (bow_lexer_gram_open_char): new function
	(_bow_gram_lexer): new field: bow_lexer_gram_open_char

	* lex-email.c (_bow_email_lexer): new field:
	bow_lexer_simple_open_char

	* istext.c (bow_char_is_text): new function

	* int4word.c (bow_words_add_occurrences_from_hdb): new function

	* hdb.c: new file
	(hdb_open): new function
	(hdb_close): new function
	(hdb_put): new function
	(hdb_get): new function
	(hdb_each): new function

	* docnames.c (bow_map_filenames_from_hdb): new function

	* barrel.c (bow_barrel_add_from_hdb): new function

	* arrow.c (arrow_index): Call HDB functions if BOW_HDB is set

	* Makefile.in: Added stuff necessary to compile with HDB code
	(Hash DataBase - simple file system-like database)

1998-08-19  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h: Fix comment descriptions of event models.

	* opts.c (bow_event_document_then_word_document_length): New
	global variable.
	(bow_options): New command-line option
	"event-document-then-word-document-length".
	(parse_bow_opt): Handle it.
	* bow/libbow.h: Declare new global variable.

	* naivebayes.c (bow_naivebayes_score): Use
	BOW_EVENT_DOCUMENT_THEN_WORD_DOCUMENT_LENGTH.  When multiplying by
	the number of occurrences in the QUERY_WV, use .weight, not
	.count.

	* vpc.c (bow_barrel_new_vpc): Use
	BOW_EVENT_DOCUMENT_THEN_WORD_DOCUMENT_LENGTH.

1998-08-19  Kamal Nigam  <knigam@zeno.jprc.com>

	* bow/libbow.h (bow_set_file_types_preprocess): Removed.
	(bow_set_all_files_untagged): Removed.
	(bow_set_file_types_randomly_by_count_per_class): Removed.
	(bow_set_file_types_randomly_by_count): Removed.
	(bow_set_file_types_randomly_fraction): Removed.
	(bow_set_files_to_type): Removed.
	(bow_set_file_types_postprocess): Removed.
	(set_doc_types): New prototype.
	(bow_ignore_next_wv): Removed.
	(bow_ignored_model_next_wv): Removed.
	(bow_cdoc_is_unlabeled): New prototype.

	* split.c (test_files_count): Removed.
	(train_files_count): Removed.
	(untagged_files_count): Removed.
	(bow_files_source_type): New type.
	(bow_split_fancy_count): New type.
	(bow_{test,train,unlabeled,ignore}_{files_source,fraction,number,filename,fancy_counts):
	New variables.
	(bow_test_set_files_use_basename): New variable from opts.c
	(bow_split_options): Code for handling split options.
	(bow_split_parse_opt): Likewise.
	(bow_split_argp): Likewise.
	(bow_split_argp_child): Likewise.
	(bow_set_all_files_untagged): Don't use removed global variables.
	(bow_set_file_types_randomly_by_count_per_class): Likewise.
	(bow_set_file_types_randomly_by_fraction): Likewise.
	(bow_set_files_to_type): Likewise.
	(bow_set_file_types_preprocess): Removed.
	(bow_set_file_types_randomly_by_count): Calculate per class nums by
	converting to floats to avoid integer roundoff error.
	(bow_set_file_types_postprocess): Removed.
	(bow_set_file_types_of_remaining): New function.
	(set_doc_types): New function.
	(_register_split_args): New function.

	* rainbow.c (rainbow_options): Removed options
	prind-non-uniform-priors prind-no-foilgain-weight-scaling
	prind-no-score-normalization and moved to prind.c.  Removed
	test-percentage set-test-files testing-files
	set-files-use-basename testing-files-use-basename set-train-files
	and moved functionality to split.c.
	(struct rainbow_arg_state): Likewise.
	(rainbow_parse_opt): Likewise.
	(rainbow_lisp_setup): Likewise.
	(main): Likewise.
	(rainbow_test): Removed test/train split code into split.c.

	* prind.c (prind_options): New for options.  Taken from rainbow.c
	(prind_parse_opt): Likewise.
	(prind_argp): Likewise.
	(prind_argp_child): Likewise.
	(_register_method_prind): Added option registration.

	* opts.c (bow_test_set_files_use_basename): Removed to split.c

	* next.c (bow_cdoc_is_model): Updated to new document types.
	(bow_cdoc_is_test): Likewise.
	(bow_cdoc_is_nontest): Likewise.
	(bow_cdoc_is_ignore): Likewise.
	(bow_cdoc_is_ignored_model): Likewise.
	(bow_cdoc_is_unlabeled): New function.
	(bow_ignore_next_wv): Removed.
	(bow_ignored_model_next_wv): Removed.

	* naivebayes.c (naivebayes_options): Changed argument priority.

	* mix.c (mix_options): Changed priority number of the options.
	(mix_new_vpc): Updated to new document types.

	* knn.c (knn_options): Changed priority number of the options.

	* em.c (use_unknown_percent): Removed.
	(bow_em_binary_model_counts): Removed.
	(unknown_percent): Removed.
	(not_unknown_num_by_class): Removed.
	(bow_em_unlabeled_num): Removed.
	(em_no_splitting): Removed.
	(bow_em_fancy_counts): Removed.
	(em_no_reset_doc_types): Removed.
	(em_options): Removed options em-unlabeled-percent
	em-labeled-num-by-class em-unlabeled-num em-no-splitting
	em-no-reset-doc-types.
	(em_parse_opt): Likewise.
	(bow_em_new_vpc_with_weights): Remove all code to do train/unlabeled
	splits.  This is now handled by libbow.  Changed call to
	bow_ignore_next_wv to be a call to bow_heap_next_wv.

	* active.c (active_initial_known): Removed.
	(active_num_unlabeled): Removed.
	(active_options): Removed options --active-initial-known and
	--active-num-unlabeled.  Now handled by libbow.
	(active_parse_opt): Likewise.
	(active_select_qbc): Update document types so unlabeled docs are now
	of type bow_doc_unlabeled.  Change other document types to the new
	ones.
	(active_select_weighted_kl): Likewise.
	(active_select_dkl): Likewise.
	(active_select_vote_entropy): Likewise.
	(active_select_uncertain): Liekwise.
	(active_select_relevant): Likewise.
	(active_select_length): Likewise.
	(active_select_random): Likewise.
	(active_select_stream_ve): Likewise.
	(active_select_stream_kl): Likewise.
	(active_learn): Likewise.  Also removed all code to handle
	test/train/ignore split here.  Now done in libbow.  Don't change
	doc types at end of active_learn.

1998-08-18  Andrew McCallum  <mccallum@jprc.com>

	* treenode.c (treenode_keywords_print): Instead of contintionally
	printing keywords, and sometimes printing "alias" (depending on kl
	value), always print the keywords, AND print the kl divergence
	value, so that a later post-processing program can decide for
	itself which keywords and aliases it wants to use.

1998-08-17  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h: Declare new split.c functions.
	(bow_doc_type): Add bow_doc_untagged.

	* rainbow.c (rainbow_options): New command-line options
	"set-test-files", "set-train-files", "set-files-use-basename".
	Not all are yet handled.
	(rainbow_test): Use new file type split.c functions.  
	(rainbow_test_files): Remove commented out code for building a new
	model.

	* split.c (bow_set_all_files_untagged): New function.
	(bow_set_file_types_preprocess): New function.
	(bow_set_file_types_randomly_by_count_per_class): New function.
	(bow_set_file_types_randomly_by_count): New function.  Takes
	over from bow_test_split().
	(bow_set_file_types_randomly_by_fraction): New function.
	(bow_set_files_to_type): New function.  Takes over from
	bow_test_set_files().
	(bow_test_split, bow_test_split2, bow_test_split3): Functions
	removed.
	(bow_test_new_heap, bow_heap_next_wv_guts, bow_heap_next_wv,
	bow_cdoc_is_*): Functions moved to next.c.

	* next.c: New file.
	* Makefile.in (LIBBOW_C_FILES): Added next.c.

	* random.c (bow_random_set_seed): Moved to this file from split.c.

1998-08-17  Kamal Nigam  <knigam@zeno.jprc.com>

	* bow/libbow.h (bow_doc_type): Changed values and added an
	unlabeled doc type.

	* bow/em.h (bow_em_perturb_weights): New prototype.

	* em.c: Major overhaul to em.c.  Cleaned up code, removed obsolete
	functionality, and added some annealing functionality.
	
	(bow_em_stat_method): Removed all but two methods. 
	(ignored_model_are_false_unknown): removed.
	(use_leave_one_out): Removed.
	(use_train_for_stats): Removed.
	(use_priors_for_initial_class_probs): Removed.
	(bow_em_unlabeled_start_method): New type for how to start the
	starting point for EM using the unlabeled documents.
	(bow_em_multi_hump_init_method): new type for how to distribute the
	labeled documents among the multiple negative humps.
	(ignored_model_percent): Removed.
	(bow_em_pr_window_size): Removed.
	(bow_em_take_best_barrel): Removed.
	(bow_em_print_stat_summary): Removed.
	(em_score_normalize_log): Removed.
	(em_unlabeled_classname): Removed.
	(use_even_for_initial_class_probs): Removed.
	(em_anneal): New option variable.
	(em_temperature): new option variable.
	(em_temp_reduction): new option variable.
	(em_print_correct): New option variable.
	(em_unlabeled_start): New option variable.
	(em_multi_hump_init): new option variable.
	(em_options): Removed options em-unlabeled-class and
	em-even-unlabeled-priors em-score-normalize-log.  Added options
	em-anneal em-temperature em-temp-reduce em-print-progress
	em-unlabeled-start and em-multi-hump-init.
	(em_parse_opt): Likewise.  Also removed extra stat method types.
	(bow_em_new_vpc_with_weights): Removed code for all options removed
	from em_options.  Only handle stat methods for nb_score and
	simple.  A general clean-up and re-organization to put related
	pieces near each other, and de-spaghetti-ization.  Added code to
	do some deterministic annealing by a specified temperature
	reduction schedule.  Added code for option to print accuracy after
	each round of em (option em-print-progress).  Cleaned up code for
	specifying how to treat unlabeled docs when specifying starting
	point by adding option em-unlabeled-start.  Added option to
	initialize the multiple negative humps by either randomly putting
	a document in a hump, or spreading a document randomly across
	humps (option em-multi-hump-init).  Changed document types to be
	in accordance with new doc types (model -> bow_doc_train, ignore
	-> bow_doc_unlabeled, etc.).  Prune the vocab before doing
	multi-hump initialization based only on the two-class split.
	(bow_em_test_accuracy): New function.
	(bow_em_set_priors_using_class_probs): Changes for new doc types.
	(bow_em_score): Changes for new doc types.  Additions for
	deterministic annealing code to handle the temperature correctly.
	Remove code for em-score-normalize-log.

Tue Aug  4 14:54:55 1998  Andrew's Laptop Account  <mccallum@jprc.com>

	* mn.c (hac_em_one_mn_iteration): Re-written.

1998-08-04  Andrew McCallum  <mccallum@jprc.com>

	* mn.c: New file.

Tue Aug  4 14:35:32 1998  Andrew's Laptop Account  <mccallum@jprc.com>

	* hac.c (hac_split_kl_threshold): Change default value from 2000
 	to 0.4.
	(hac_hypothesize_grandchildren): Use treenode_children_kl_div()
	instead of treenode_children_weighted_kl_div().
	(MN): New macro, set to 0.  Include "mn.c" if true.
	(hac_generates_class): New global variable.
	(hac_em_one_iteration): Simply return hac_em_one_mn_interation if MN.
	(hac_cluster): If CROSSBOW_CLASSES_COUNT, print the class distribution.

	* crossbow.c (crossbow_index): Always set CROSSBOW_CLASSES_COUNT,
 	indepedent of BUILD_HIER_FROM_DIR.  Also set classes distribution
 	to uniform in the root, so that all children will get space
 	allocated for this distribution.

1998-07-30  Jason Rennie  <jrennie@cyclone.jprc.com>

	* lex-suffixing.c (suffixing_snarf_suffix): added hack so that
	arrow will (hopefully) work on Cora 23k+ document data set

1998-07-28  Jason Rennie  <jrennie@cyclone.jprc.com>

	* arrow.c (main): Don't load everything into memory at start.

1998-07-22  Jason Rennie  <jrennie@cyclone.jprc.com>

	* docnames.c (bow_map_filenames_from_dir): Try opening as file if
	directory doesn't work.

	* docnames.c (bow_map_filenames_from_dir): Give warning and return
	if no directory found.

1998-07-17  Andrew McCallum  <mccallum@jprc.com>

	* hac.c (hac_cluster): Print the iteration number.
	(hac_full_em): Don't assert HAC_LOO.  Print the word distribution
	immediately after depositing the data.  Add (commented out) code
	for initializing the lambdas to a skewed distribution.  Print the
	iteration number.

	* treenode.c (treenode_pr_wi_loo_local): Handle the case in which
	there is no data left after the LOO document is removed.
	(treenode_keywords_print): Use treenode_pair_kl_div() instead of
	treenode_pair_weighted_kl_div().

	* bow/treenode.h: Declare Kamal's new function.

1998-07-15  Kamal Nigam  <knigam@zeno.jprc.com>

	* hac.c (hac_shrinkage): New variable for shrinkage option.
	(hac_loo): New variable for loo option.
	(cluster_hac_options): Changes for loo and shrinkage options.
	(cluster_hac_parse_opt): Likewise.
	(hac_hypothesize_grandchildren): Move code to create children to new
	function.
	(hac_create_children_for_node): New function.
	(hac_perplexity): Changed shrinkage and loo compiler options to
	runtime optionns.
	(hac_em_one_iteration): Likewise.    Added loo-no shrinkage
	option.
	(hac_cluster): Also created children of root identically to how other
	children are created.
	(hac_full_em): check that loo and shrinkage are in use.

	* treenode.c (treenode_log_local_prob_of_wv_loo): New function.

1998-07-15  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c (crossbow_filename2di): New global variable.
	(crossbow_classes_count): New global variable.
	(crossbow_archive): Write CROSSBOW_FILENAME2DI.
	(crossbow_unarchive): Read it, and initialize CROSSBOW_CLASSES_COUNT.
	(crossbow_index): Initialize CROSSBOW_FILENAME2DI.  Set
	CROSSBOW_CLASSES_COUNT and create space in the root for CLASSES
	distribution.
	(crossbow_classify_test_docs): In addition to calculating fraction
	correct, also calculate average inverse rank, and average score
	difference between top ranked class and correct class.
	* bow/crossbow.h: Declare new global variables.

	* hac.c (hac_cluster): Don't print newlines before TEMPERATURE.
	(hac_full_em): Use alpha=1 when setting leaf prior, instead of 0.
	Don't print leaf priors since they don't change.  Print top words
	if HAC_VERTICAL_WORD_MOVEMENT.

	* treenode.c (treenode_new): Set CLASSES_CAPACITY from PARENT if
	there is a parent, then also initialize CLASSES to uniform.
	(treenode_write): Write the CLASSES information to disk.  NOTE: This
	changes the file format for the model.
	(treenode_new_from_fp): Read in the CLASSES information.
	(treenode_set_classes_uniform): New function.
	(treenode_set_classes_from_new_classes): New function.
	* bow/treenode.h: Declare new functions.

1998-07-14  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c (main): Tell the lexer to toss words longer than 20.

	* hac.c (hac_hypothesize_grandchildren): Instead of void, return
	non-zero int if a split was made.
	(hac_consider_splitting): Likewise.
	(hac_cluster): Write classification and keywords to separate files for
	different iterations.

	* treenode.c (treenode_set_words_from_new_words): Renormalize
	WORDS distribution after accelerated EM.
	(treenode_set_new_words_from_perturbed_words): Add NOISE_WEIGHT
	argument.
	(treenode_set_new_words_from_perturbed_words_all): Likewise.
	(treenode_set_lambdas_from_new_lambdas): Always avoid accelerated EM,
	even if USE_ACCELERATED_EM is non-zero.
	(treenode_keywords_print): New function.
	(treenode_keywords_print_all): New function.
	(treenode_pair_kl_div): New function.
	(treenode_pair_weighted_kl_div): New function.
	* bow/treenode.h: Declare new functions.

1998-07-13  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c (crossbow_classify_test_docs): Add SHRINKAGE argument
	and use it instead of macro.
	(crossbow_classify): Use TEST_FRACTION when splitting.
	(crossbow_options): New option "test-percentage".
	(crossbow_parse_opt): Handle it.
	(main): Initialize it to .3.

	* hac.c (hac_em_one_iteration): If ANCESTOR_MEMBERSHIP is zero,
	continue.  Set the leaf prior before setting word distribution,
	not after.
	(hac_place_labeled_data): New function.
	(hac_full_em): Use it.  Move hac_em_one_iteration() to after the
	diagnostic printing, not before.

	* treenode.c (treenode_set_lambdas_uniform_all): New function.
	(treenode_set_words_from_new_words): Don't assert that
	TOTAL_WORD_COUNT is greater than zero.  If it is zero, set the
	distribution to uniform, with ALPHA equal to 1/N.
	(treenode_set_leaf_prior_from_new_prior_all): 
	(treenode_set_lambdas_from_new_lambdas): Likewise.
	(treenode_log_local_prob_of_wv): Use log()-prob, not prob!
	(treenode_word_probs_print_all): Only print the prior for leaf nodes. 
	(treenode_children_kl_div): Don't assert that KLDIV is less than 10.
	* bow/treenode.h: Declare new functions.

1998-07-09  Andrew McCallum  <mccallum@jprc.com>

	Let crossbow do classification.

	* crossbow.c (SHRINKAGE): New macro.
	(crossbow_arg_state): New element BUILD_HIER_FROM_DIR.
	(crossbow_docs_split): New function.
	(crossbow_doc_is_model): New function.
	(crossbow_doc_is_test): New function.
	(crossbow_doc_is_ignore): New function.
	(crossbow_new_root_from_dir): New function.
	(crossbow_index): Initialize DOC.TAG.  Obey BUILD_HIER_FROM_DIR.
	(crossbow_classify_test_docs): New function.
	(crossbow_classify): Filled out.
	(crossbow_options): New command-line options "build-hier-from-dir" and
	"classify".
	(main): Set default BUILD_HIER_FROM_DIR to 0.
	* bow/crossbow.h: Declare new functions.
	(crossbow_doc): New element CI.

	* hac.c (hac_deterministic_horizontal): New variable.
	(hac_vertical_word_movement): New variable.
	(cluster_hac_options): New command-line option
	"hac-no-vertical-word-movement".
	(cluster_hac_parse_opt): Handle it.
	(hac_perplexity): New function.
	(hac_em_one_iteration): Obey HAC_DETERMINISTIC_HORIZONTAL and
	HAC_VERTICAL_WORD_MOVEMENT.
	(hac_cluster): Don't initialize children of root if there already are
	some.  Add LOO counts in the initial random E-step.
	(hac_full_em): New function.

	* treenode.c (treenode_new): Add NAME argument.  All callers
	changed.  Initialize CLASSES to NULL.
	(treenode_new_from_fp): Initialize CLASSES to NULL.
	(treenode_children_weighted_kl_div): New function.
	* bow/treenode.h: Declare new functions.
	(treenode): Add new elements CLASSES_CAPACITY, CLASSES, NEW_CLASSES.

	* bow/libbow.h (bow_array_next_index): Declare function.

1998-07-09  Jason Rennie  <jrennie@cyclone.jprc.com>

	* rainbow-stats.pl (read_trial): try to sort class names

1998-07-06  Andrew McCallum  <mccallum@jprc.com>

	* hac.c (LOO): New macro.
	(cluster_hac_options): New command-line option "hac-maximum-depth".
	(cluster_hac_parse_opt): Handle it.
	(hac_hypothesize_grandchildren): Obey it.
	(hac_em_one_iteration): Implement LOO.

	* treenode.c (treenode_new): Initialize LOO treenode variables.
	(treenode_new_from_fp): Likewise.
	(treenode_add_new_loo_for_di_wvi): New function.
	(treenode_free_loo): New function.
	(treenode_set_loo_from_new_loo): New function.
	(treenode_set_words_from_new_words): Set NEW_WORDS_NORMALIZER.
	(treenode_pr_wi_loo_local): New function.
	(treenode_pr_wi_loo): New function.
	(treenode_word_likelihood_ratios): Use shrinkage estimates for word
	probabilities intead of the local estimates.
	* bow/treenode.h: Declare new functions.
	(treenode): Add elements DI_LOO, DI_WVI_LOO, NEW_DI_LOO and
	NEW_DI_WVI_LOO.

	* configure.in (CFLAGS): Change default to include -Wimplicit
	instead of -Wno-implicit.
	* bow/crossbow.h (crossbow_convert_log_probs_to_probs): Declare
	function.

1998-07-03  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c (crossbow_arg_state): New member CLUSTER_OUTPUT_DIR.
	(crossbow_leaf_document_probs_print): Calculate cross entropy instead
	of probability.
	(crossbow_archive): Add DIRNAME argument.
	(crossbow_unarchive): Likewise.
	(crossbow_classify_all_docs): New function.
	(crossbow_options): New command-line option "cluster-output-dir".
	(main): Handle it.

	* hac.c: Add command-line options for many parameters.  Call
	crossbow_classify_all_docs().

	* treenode.c (USE_ACCELERATED_EM): New macro.
	(EM_ACCELERATION): New macro.
	(treenode_set_words_from_new_words): Use EM_ACCELERATION.
	(treenode_set_lambdas_from_new_lambdas): Likewise.
	(treenode_iterate_all_under_node): New function.
	(treenode_pr_wi): Make it work for interior nodes of the tree as well
	as the leaves.
	(treenode_prior): New function.
	(treenode_node_count): New function.
	(treenode_normalized_word_prob_all_print): New function.
	* bow/treenode.h: Declare new functions.

1998-06-27  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_fwrite_double): New function.
	(bow_fread_double): New function.

	* bow/treenode.h: Declare new functions.
	(treenode): Change all float's to double's.

	* crossbow.c (crossbow_unarchive): Use renamed function
	treenode_new_from_fp().

	* hac.c (SHRINKAGE): New macro.
	(hac_hypothesize_grandchildren): Change KLDIV threshold from 0.0001 to
	0.2.  Instead of setting new LAMBDAS to uniform, re-divide the
	distribution from the new leaf's parent.  Use shrinkage.
	(hac_em_one_iteration):  Use shrinkage. 
	(hac_consider_splitting): New function.
	(cluster_hac): Use it.  Initialize by dividing each document
	probabilistically among children, instead of by hard assignment.
	Print just the word prob distributions, not the likelihood ratios.

	* treenode.c (treenode_new): Initialize LAMBDAS and NEW_LAMBDAS to
	put all the weight on the new treenode.
	(treenode_write): Write the PRIOR and NEW_PRIOR.  Everything that was
	a float is now a double.
	(treenode_new_from_fp): Read them.  Likewise.
	(treenode_set_lambdas_uniform): New function.
	(treenode_set_lambdas_from_new_lambdas): New function.
	(treenode_log_local_prob_of_wv): New function.
	(treenode_complete_log_prob_of_wv): New function.
	(treenode_pr_wi): New function.
	(treenode_log_prob_of_wv): Changed to use shrunken pr_wi estimates.
	(treenode_word_leaf_likelihood_ratios): Deal with zero word probs.
	(treenode_children_kl_div): Likewise.

1998-06-24  Andrew McCallum  <mccallum@jprc.com>

	* hac.c (hac_branching_factor): Renamed from NUM_CLUSTERS.
	(hac_hypothesize_grandchildren): Renamed from
	hac_hypothesize_grandchidren, and implemented.
	(hac_em_one_iteration): Fix bug in perplexity calculation.
	(cluster_hac): Intead of clustering flatly, grow a tree.  Print more
	diagnostics.
	* bow/treenode.h: Declare more functions.

	* treenode.c (treenode_new): Fix parenthezation of strlen for
	NAME.  Set WORDS_CAPACITY from parent.
	(treenode_word_likelihood_ratios): Calculate weighted log likelihood
	ratio instead of straight log likelihood.
	(treenode_word_leaf_likelihood_ratios): New function.
	(treenode_word_leaf_odds_ratios): New function.
	(treenode_word_leaf_mean_ratios): New function.
	(treenode_word_leaf_likelihood_ratios_print): New function.
	(treenode_word_leaf_odds_ratios_print): New function.
	(treenode_children_kl_div): New function.
	(treenode_is_leaf_parent): New function.

	* random.c (bow_random_double): Add LOW value after the
	multiplication!

	* em.c (random_double): Add LOW value after the multiplication!

1998-06-23  Jason Rennie  <jrennie@cyclone.jprc.com>

	* barrel.c (bow_barrel_add_from_text_dir): when printing
	bow_num_words, allow 8 spaces

1998-06-22  Andrew McCallum  <mccallum@jprc.com>

	* Makefile.in (LIBBOW_C_FILES): Add random.c.
	(CROSSBOW_C_FILES, CROSSBOW_O_FILES): New variables.
	(crossbow): New target.

	* bow/crossbow.h: Remove treenode functions.  Declare new
	functions. 

	* bow/libbow.h (bow_sparray): Declaration for a sparse array, but
	it's not implemented yet.
	(bow_wv_word_count): Declare new function.
	(bow_random_double, bow_random_01): Declare new functions.

	* crossbow.c: Move all treenode functions to treenode.c.
	(crossbow_convert_log_probs_to_probs): New function.
	(crossbow_leaf_document_probs_print): New function.
	(crossbow_index): Create the root with space for 10 children.
	(crossbow_cluster): Call cluster_hac().

	* random.c: Fix typos.

1998-06-19  Andrew McCallum  <mccallum@jprc.com>

	* random.c: New file.

	* wv.c (bow_wv_word_count): New function.
	* array.c (bow_array_next_index): New function.

1998-06-18  Kamal Nigam  <knigam@kamal.jprc.com>

	* cluster-flat.c (cluster_flat): Initial check-in.

1998-06-18  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c (treenode_word_likelihood_ratio): New function.
	(treenode_word_likelihood_ratio_print_top): New function.

	* bow/crossbow.h: Declare many functions.

	* crossbow.c (treenode_new): Initialize the WORDS and NEW_WORDS to
	zero.
	(crossbow_wv_at_di): New function.
	(crossbow_load_doc_wvs): New function.
	(crossbow_unarchive): Call it.  Read wv's from file named "wvs".
	(crossbow_index): Get the WV_SEEK_POS from the correct FP!  Write wv's
	to file named "wvs".
	(crossbow_options): New option "cluster".
	(crossbow_parse_opt): Handle it.
	(main): Call crossbow_unarchive if WHAT_DOING isn't crossbow_index.

	* crossbow.c: Move definitions to crossbow.h.  Create read and
	write an array of crossbow_doc structures.
	(crossbow_index) Fix bug that was causing crash.
	* crossbow.h: New file.

1998-06-17  Andrew McCallum  <mccallum@jprc.com>

	* crossbow.c: Completely re-written in preparation for
	implementing hierarchical clustering.

	* array.c (bow_array_init): Use bow_malloc instead of malloc.

1998-06-09  Jason Rennie  <jrennie@cyclone.jprc.com>

	* tfidf.c: change 'extern int' to 'int' so that
	bow_tfidf_num_hit_documents is defined

1998-06-09  Andrew McCallum  <mccallum@jprc.com>

	* tfidf.c (bow_tfidf_set_weights): When DOING_LOG_COUNTS, use the
	count+1, not just count.  This avoids unwanted zeros when
	count==1!
	* wv.c (bow_wv_set_weights_to_log_count_times_idf): Likewise.

	* tfidf.c (bow_tfidf_num_hit_documents): New global variable.
	(bow_tfidf_score): Set it.
	* bow/tfidf.h: Declare new global variable.
	* arrow.c (arrow_query): Print BOW_TFIDF_NUM_HIT_DOCUMENTS.

1998-06-08  Andrew McCallum  <mccallum@jprc.com>

	* arrow.c (arrow_query): Cast argument to bow_free to avoid
	warning.

	* tfidf.c (DOING_LOG_COUNTS): New macro.
	(bow_tfidf_set_weights): Use it to (conditionally) set weights to the
	log(count)*idf, instead of count*idf.  This is an attempt to
	improve IR for Cora by more strongly insisting on having all query
	terms be present.
	(bow_tfidf_score): Likewise.  Calculate the total number of documents
	that had query terms present, and print this number to standard
	out as a directive to the Cora CGI script as ",HITCOUNT %d".

	* wv.c (bow_wv_set_weights_to_log_count_times_idf): New function.
	* libbow.h: Declare new function.

	* arrow.c (arrow_query): Use NUM_SUFFIXES an another place it
	should be, instead of the old constant 5.  Print the score on each
	line, in addition to the filename and hit words.

1998-06-05  Andrew McCallum  <mccallum@jprc.com>

	* tfidf.c (bow_tfidf_score): Fix bug in query word recording, and
	uncomment code.

	* tfidf.c (bow_tfidf_score): Only return documents that contain
	one or more query terms.  Add code for returning the query words
	that were found in each document, but comment it out since it
	isn't working yet.

	* arrow.c (NUM_SUFFIXES): New macro.
	(arrow_query): Use it.  Print not just the FILENAME, but also the
	HITS[I].NAME, which, in the case of TFIDF, should contain the
	query words that were found in this document.

1998-06-04  Andrew McCallum  <mccallum@jprc.com>

	* barrel.c (bow_barrel_new_from_printed_barrel_file): Read word
	count as a float, not an integer.  Initialize the barrel's wi2dvf
	WEIGHT as well as COUNT with the word count.

1998-06-03  Andrew McCallum  <mccallum@jprc.com>

	* lex-suffixing.c (suffixing_snarf_suffix): Change suffix boundary
	from '-' to "xxx".  Lowercase the suffix.
	* arrow.c (arrow_query): Likewise.

1998-06-01  Andrew McCallum  <mccallum@jprc.com>

	* STANDARDS: New file.

	* rainbow-h.c (hier_barrel): New element LOO_DOC_WI2DVF.
	(hier_barrel_new): Initialize it to NULL.
	(hier_barrel_init_all_new_class_wi2dvf): If it is NULL, initialize it
	to an empty wi2dvf.
	(hier_barrel_set_class_model_from_new_class_wi2dvf): Instead of
	making a new empty NEW_CLASS_WI2DVF for the next round, just set
	it to NULL; hier_barrel_init_all_new_class_wi2dvf() will create a
	new one for us, now that it is being called inside the
	while()-loop in the function hier_barrel_calc_lambdas_all_nodes().
	(hier_barrel_calc_lambda_one_iteration): Calculate the DI in the root
	of each document from heap.  Then use this to add
	E-step-probability-mass to the SOURCE_HBARREL->LOO_DOC_WI2DVF.
	(hier_barrel_calc_lambdas_all_nodes): Call
	hier_barrel_init_all_new_class_wi2dvf() inside the while loop, so
	that the LOO_DOC_WI2DVF gets properly re-initialized.
	(hier_barrel_word_probabilities_for_hbarrel): Comment out unused
	variable.
	(rainbowh_unarchive): Initialize the FILENAME -> DI mapping in the
	root's DOC_BARREL.  This is used in
	hier_barrel_calc_lambda_one_iteration() to calculate ROOT_DI.

1998-06-02  Kamal Nigam  <knigam@kamal.jprc.com>

	* active.c: active_select_stream_kl: New function.
	(active_selection_type): added skl as a method.
	(active_parse_opt): Likewise.
	(active_learn): Cleaner futzing and restoring of EM options when 
	calculating test stats.  Correctly rebuild barrel for testing
	stats.

	* em.c (bow_em_new_vpc_with_weights): Don't try to set priors if
	doing uniform class priors; this avoids potential badness.  If
	zero labeled docs, only create a random starting point if we're
	not doing 'em-no-splitting'; active learning needs specific
	starting points.  Create full word-class matrix for all words in
	vocabulary; this avoids problems when perturbing the barrel for
	zero-occurring words.

	* barrel.c (bow_barrel_copy): initialize classnames correctly

1998-06-01  Andrew McCallum  <mccallum@jprc.com>

	These changes from Sean Slattery <Sean.Slattery@cs.cmu.edu>
	* bow/libbow.h (bow_bitvec): Added element BITS_SET.
	* bitvec.c (bow_bitvec_set): Keep BITS_SET up to date.

1998-06-01  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c: First attempts at Full EM.  It doesn't do
	leave-one-document out properly because it doesn't keep track of
	how a document's data was distributed among the ancestors.
	
	(rainbowh_options): Added "emfull" as a shrinkage option.
	(rainbowh_parse_opt): Handle it.
	(struct rainbowh_arg_state): New element FULL_EM.
	(hier_barrel_prune_words_not_in_map_and_set_vpc): Remind myself to set
	the CDOC->NORMALIZER here.
	(hier_barrel_set_local_class_model): Likewise.
	(hier_barrel_init_all_new_class_wi2dvf): Create NEW_CLASS_WI2DVF with
	space enough for bow_num_words() + 2, not jus tbow_num_words().
	(hier_barrel_set_class_model_from_new_class_wi2dvf): Return
	immediately if HBARREL->CLASS_BARREL is NULL, and only do the
	replacement if HBARREL->NEW_CLASS_WI2DVF is non-NULL.
	(hier_barrel_prob_wi_in_ci_wittenbell): Function gutted.
	(old_hier_barrel_prob_wi_in_ci_shrink): Function removed.
	(hier_barrel_prob_wi_in_ci_local): Comment out assertion about WEIGHT
	equalling COUNT.  As a temporary measure, check for negative
	counts and make them zero.
	(hier_barrel_prob_wi_in_ci_local): As a temporary measure, check for
	negative counts and make them zero.
	(hier_barrel_prob_wi_local): Comment out assertion about WEIGHT
	equalling COUNT.  As a temporary measure, check for negative
	counts and make them zero.
	(hier_barrel_calc_lambda_one_iteration): Attend to
	RAINBOWH_ARG_STATE.FULL_EM.
	(hier_barrel_all_reset_cdoc_word_count_from_wi2dvf_weights): New
	function. 
	(hier_barrel_calc_lambdas_all_nodes): Print overall perplexity and do
	new necessary resets.
	(hier_barrel_word_probabilities_for_class): Don't bother trying entire
	CLASS_BARREL->WI2DVF->SIZE, because many will have null DV's.  Get
	local probabilities instead of shrunken ones.
	(hier_barrel_word_probabilities_for_hbarrel): New function.
	(hier_barrel_print_word_probabilities_for_hbarrel): Use new function.
	(hier_barrel_print_all_highest_prob_words): New function.
	(_hier_barrel_local_score): When printing scores, print count instead
	of weight.
	(hier_barrel_set_lambdas): Do full EM if requested by attending to
	RAINBOWH_ARG_STATE.FULL_EM.
	(main): Initialize RAINBOWH_ARG_STATE.FULL_EM.

	* Makefile.local (rainbow-h): Include argp/libargp.a in the
	dependencies.

	* naivebayes.c
	(bow_naivebayes_set_cdoc_word_count_from_wi2dvf_weights): New
	function.
	* bow/naivebayes.h
	(bow_naivebayes_set_cdoc_word_count_from_wi2dvf_weights): Declare
	function.

	* wa.c (bow_wa_append): Fix boundary condition for array growth.

1998-06-01  Jason Rennie  <jrennie@kamal.jprc.com>

	* arrow.c (arrow_query): return 0 if query words all have 0 IDF

1998-05-31  Jason Rennie  <jrennie@kamal.jprc.com>

	* libbow.h (BOW_MAX_WORD_LENGTH): increased to 4096

1998-05-29  Jason Rennie  <jrennie@kamal.jprc.com>

	* arrow.c (arrow_query): added a feedline to a verbosify statement

1998-05-29  Jason Rennie <jrennie@data.jprc.com>

	* arrow.c (arrow_serve): kill child after serving is done.
	(main): prevent zombie children in System V environment.

1998-05-22  Andrew McCallum  <mccallum@jprc.com>

	* arrow.c (arrow_index): Make default method tfidf instead of
	prind.
	(arrow_query): Add suffixes "-Title", "-Author", "-Institution",
	"-Abstract" to the query.

	* lex-suffixing.c: New file.
	* Makefile.in (LIBBOW_C_FILES): Added lex-suffixing.c.
	* bow/libbow.h (bow_suffixing_lexer, bow_default_lexer_suffixing):
	Declare variables.
	* bow/tfidf.h (bow_method_tfidf): Declare method.
	* deflexer.c (_bow_default_lexer_init): Add suffixing lexer.
	* opts.c (bow_options): New command-line option "lex-suffixing".
	(parse_bow_opt): Handle it.

	* error.c (_bow_error): fflush() before aborting.

	* rainbow-rank.pl: Calculate average inverse rank, instead of
	average rank.

1998-05-06  Andrew McCallum  <mccallum@jprc.com>

	* split.c (bow_basename): Don't include the `/' at the beginning
	of the NUM_COMPONENTS components.  This way Reuters experiments,
	with a --testing-files file containing only the document numbers
	will still work; before this function was returning strings like
	"/15232" for the filenames in the CDOCS.

	* vpc.c (bow_barrel_set_vpc_priors_by_counting): Avoid crashing
	when PRIOR_SUM is zero.

	* em.c (random01): Make sure the this doesn't return a number
	equal to 0 or 1, just as "Recipes in C" says it should for doing
	the Gamma distribution properly.  We were getting negative values
	somewhere later in the code and suspect this is the culprit.
	(bow_em_perturb_weights): Don't check the cdoc->type of the class
	CDOCS; they aren't set.  Assert that CDOC->WORD_COUNT is
	non-negative.

1998-05-05  Andrew McCallum  <mccallum@jprc.com>

	* Makefile.in (PERL_FILES): Added rainbow-rank.pl.  Written by
	Andrew Y. Ng <ayn@ai.mit.edu>.

1998-05-04  Andrew McCallum  <mccallum@jprc.com>

	* em.c (bow_em_perturb_weights): Properly perturb zero-valued
	WEIGHTS when doing dirichlet-based perturbation.

1998-04-30  Andrew McCallum  <mccallum@jprc.com>

	* kl.c (bow_kl_score): Don't insist on a non-empty QUERY_WV.  If
	the query is empty, just use the class priors.  Accomplish this by
	setting QUERY_WORD_COUNT equal to 1.

	* naivebayes.c (bow_naivebayes_set_weights): Avoid errors when the
	barrel is completely empty.

1998-04-28  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_prune_words_not_in_map_and_set_vpc):
	Return immediately if HBARREL is NULL.
	(hier_barrel_print_infogain_hier): Likewise.
	(hier_barrel_set_vpc_and_populate_lower_branches): After freeing the
	DOC_BARREL's, immediately re-create them, instead of relying on
	later code to create them on demand.
	(hier_barrel_is_leaf_parent): New function.
	(_hier_barrel_set_node_scores): Use it to determine when to avoid
	scoring an interior node.  The previous test only worked with
	uniform-depth trees, and would cause some classes never to win.
	(main): Likewise.

	* split.c (bow_basename): Fix handling of NUM_COMPONENTS.

	* active.c (active_learn): Fix typo:
	em_perturb_starting_point_by_variance ->
	bow_em_perturb_starting_point.

1998-04-25  Andrew McCallum  <mccallum@jprc.com>

	* em.c (bow_em_perturb_starting_point): Renamed from
	em_perturb_starting_point_by_variance.  Changed from int (treated
	as binary) to an bow_em_perturb_method (an enum), for none,
	gaussian and dirichlet.
	(em_options): Expand documentation for "em-perturb-starting-point".
	(em_parse_opt): Handle it.
	(random01): New function.
	(bow_gamma_distribution): New function.
	(bow_em_perturb_weights): Use it to implement dirichlet perturbation.
	* bow/em.h (bow_em_perturb_method): New typedef.
	(bow_em_perturb_starting_point): Renamed from
	em_perturb_starting_piont_by_variance.
	* active.c: Rename em_perturb_starting_point_by_variance to
	bow_em_perturb_starting_point.  Note that this variable is now an
	enum.

1998-04-24  Andrew McCallum  <mccallum@jprc.com>

	* arrow.c (arrow_arg_state): New element SERVE_WITH_FORKING.
	(arrow_query): New argument NUM_HITS_TO_SHOW.
	(arrow_socket_init): Add verbosity.
	(arrow_serve): Initial code thinking about a forking server.
	(main): In query_serving, touch all dv's if we are a forking server.

1998-04-24  Kamal Nigam  <knigam@hurricane.jprc.com>

	* bow/libbow.h: New prototypes for bow_barrel_copy and split.c
	changes.

	* active.c (active_selection_type): added stream vote entropy.
	(active_stream_epsilon): New option for stream vote entropy.
	(active_perturb_after_em): New option.
	(active_select_stream_ve): New function.
	(active_learn):  Only calculate density if needed for dkl.  Code for
	new option active_perturb_after_em.

	* barrel.c (bow_barrel_copy): New function.

	* split.c (bow_cdoc_is_nontest): New function.
	(bow_cdoc_is_ignore): New Function.
	(bow_cdoc_is_ignored_model): New function.
	(bow_test_next_wv): Converted to use bow_heap_next_wv so returns all
	docs.
	(bow_nontest_next_wv): Likewise.
	(bow_model_next_wv): Likewise.
	(bow_ignore_next_wv): Likewise.
	(bow_ignored_model_next_wv): Likewise.

1998-04-24  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_test): Make the format of the infogain
	filename conform to the new standard in the hier/Makefile.

	* rainbow-h.c (rainbowh_options): Add new command line argument
	"testing-files-use-basename" and have it take an optional numeric
	argument to indicate how many path components to take from the end
	of the path name.
	(rainbowh_parse_opt): Handle it.
	* rainbow.c (rainbow_options): Make "testing-files-use-basename"
	take an optional numeric argument to indicate how many path
	components to take from the end of the path name.
	(rainbow_parse_opt): Handle it.
	* split.c (bow_basename): Added new argument NUM_COMPONENTS, so we
	can grab a certain number of the directory names too.
	(bow_test_set_files): Use new argument.

1998-04-24  Jason Rennie  <jr6b@andrew.cmu.edu>

       * arrow.c (arrow_process_commands): New function.
       (arrow_serve): Added capability to fork off child servers
       (arrow_parse_opt): added option "--query-forking-server"

1998-04-23  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_calc_lambda_one_iteration):
	Temporarily turn off use of NEW_CLAS_WI2DVF.
	(hier_barrel_print_barrel): Use correct function name to print
	selected. 

1998-04-22  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_print_barrel): Avoid crashes, and print
	documents only from their leaves.

	* barrel.c (bow_barrel_printf_selective): Renamed from
	bow_barrel_printf, and added third argument.
	(bow_barrel_printf): Now a wrapper around bow_barrel_printf_selected.
	* bow/libbow.h: Declare new function.

	* rainbow-h.c: Removed calls to
	hier_barrel_check_weight_equals_count.

	* rainbow-h.c (hier_barrel_for_filename): Make sure
	LONGEST_MATCH_CI is initialized.
	(hier_barrel_wa_flat_infogain): Initialize MARGINAL_TOTAL to zero.

	* Makefile.local (rainbow-h): Depend on rainbow-h.o instead of
	rainbow-h.c, so rainbow-h.o gets built.

	* bow/libbow.h: Include <mcheck.h> if BOW_MCHECK is defined.
	(bow_malloc_hook, bow_free_hook): Global variables declared.
	(bow_malloc): Call the hook.  Do special things if MCHECK is defined.
	(bow_realloc): Call the hook.
	(bow_free): Likewise.
	(bow_test_split3, bow_ignore_split, bow_argp_add_child): Functions
	declared.
	* bmalloc.c (bow_malloc_check_all): New function.
	(_bow_malloc_hook): New function.
	(_bow_free_hook): New function.
	(bow_malloc_hook, bow_free_hook): Global variables defined.

	* arrow.c: Declare external wicoo functions.
	* bow/naivebayes.h: Declare some functions in naivebayes.c.
	* naivebayes.c: Declare external simple_good_turing function.
	* istext.c (NUM_TEST_CHARS): Change from "static const int" to a
	macro.

	* rainbow-h.c (hier_barrel): New element NEW_CLASS_WI2DVF.
	(hier_barrel_check_weight_equals_count): New function.
	(hier_barrel_init_all_new_class_wi2dvf): New function.
	(hier_barrel_set_class_model_from_new_class_wi2dvf): New function.
	(hier_barrel_set_all_class_model_from_new_class_wi2dvf): New function.
	(hier_barrel_add_stats): Add the doc_barrel COUNT to the class_barrel
	WEIGHT, instead of adding zero for the weight.
	(hier_barrel_ancestor): In third argument return the CI, which in the
	returned hbarrel points towards the HBARREL argument.
	(hier_barrel_is_ancestor): New function.
	(hier_barrel_prob_wi_in_ci_local): Use WEIGHT instead of COUNT to
	calculate probabilities.
	(hier_barrel_calc_lambda_one_iteration): Check that the weight equals
	the count, temporarity as debugging.  Prepare to do *full* EM, by
	accumulating probability mass of beta's in NEW_CLASS_WI2DVF.
	(hier_barrel_calc_lambdas_all_nodes): New function.
	(hier_barrel_print_word_probabilities_for_class): Now uses bow_wa, and
	takes new argument specifying now many to print.
	(hier_barrel_print_all_highest_prob_words): New function.
	(hier_barrel_word_probabilities_for_class): New function.
	(hier_barrel_print_infogain_flat): Free the WA at end!
	(main): Pass new argument to
	hier_barrel_print_word_probabilities_for_class.

1998-04-21  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hash_elt_t): typedef removed.
	(hier_barrel): Remove all elements having to do with Andrew Ng's old
	hash.
	(hier_barrel_new_from_file): Remove second, conditional fclose(fp).
	That is, don't close the fp twice!  On RedHat5.0 this crashes,
	although it didn't on RedHat4.x.
	(HIER_TEST): Preprocessor conditional removed.

	* rainbow-h.c (hier_dir_is_leaf): Remove "const" from type of
	argument to dir_leaf_select.  Avoids warning with new RedHat5.0.

	* rainbow-h.c (rainbowh_options): New command line option
	"use-vocab-size-hier", and old command line option,
	"use-vocab_size" is now an alias for it.  Functionality of this
	option unchanged.  New command line options "use-vocab-size-flat",
	"print-word-infogain-flat", "print-word-infogain-hier".
	(struct rainbowh_arg_state): New elements VOCAB_SIZE_METHOD and
	FORCE_TRIVIAL_HIER.
	(rainbowh_parse_opt): Handle new options.  Add new shrinkage method
	"emtriv", setting FORCE_TRIVIAL_HIER.
	(hier_barrel_calc_lambda_one_iteration): Don't print warning about
	zero lambda if FORCE_TRIVIAL_HIER.
	(hier_barrel_initialize_lambdas): If FORCE_TRIVIAL_HIER, set middle
	lambdas to zero, and local and root lambdas to .5.
	(hier_barrel_print_infogain_hier): Renamed from
	hier_barrel_print_infogain.
	(hier_barrel_wa_flat_infogain): New function.
	(hier_barrel_print_infogain_flat): New function.
	(hier_barrel_test): Change sprintf of filename in which to store the
	reduce vocabulary.  Now has pattern "infogain%d-%s-%05d", where
	string is the vocab size method.  Obey VOCAB_SIZE_METHOD.
	(main): Change defaults from populate_by_scoring=1 and
	hier_structure=neice to populate_by_scoring=0 and
	hier_structure=leaf.  Print the total number of words using
	bow_verbosify instead of fprintf.  Implement
	RAINBOWH_PRINTING_INFOGAIN_FLAT.

Tue Apr 21 11:17:46 1998  Andrew's Laptop Account  <mccallum@jprc.com>

	* bow/libbow.h (bow_entropy): Declare function.
	(bow_event_models): Document with comments.
	(bow_infogain_event_model): Declare global variable.

	* info_gain.c (bow_entropy): Change type of first argument from
 	count[] to count*.
	(bow_infogain_per_wi_new): Instead of using an infogain event
 	model that matches the word probability event model, use whichever
 	event model is specified by new global variable
 	BOW_INFOGAIN_EVENT_MODEL.  Default is "document event model".
  	Thus the default is the old behavior before the binomial paper was
 	written.  Before this change, naive Bayes by default used a "word
 	event model".

	* naivebayes.c (bow_naivebayes_set_weights): Fix the setting of
 	IDF to Pr(w).  Consolodate some code that no longer needs to be
 	separate because we no longer set the DV weights in this function.

	* opts.c (bow_infogain_event_model): New global variable.
	(bow_options): New option "infogain-event-model".
	(parse_bow_opt): Handle it.

	* wa.c (bow_wa_sort): Fix bug by which the wrong pointer was
 	passed to qsort.
	(bow_wa_sort_reverse): Likewise.
	(bow_wa_fprintf): If N is less than 0, print all entries.

Wed Apr 15 11:06:25 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_correct_cdoc_prior_recurse): Fix typo.
	(rainbowh_query): Add new filename argument to call to
	bow_wv_new_from_text_fp().

	* mix.c (mix_num_centroids_per_class): Change default from 4 to 2.
	(mix_num_iterations): New static variable.
	(mix_options): New command-line option "mixture-num-em-iterations".
	(mix_parse_opt): Handle it.
	(mix_perplexity): New function, (empty).
	(mix_new_vpc): Fix bugs.

	* rainbow-h.c (hier_barrel_correct_cdoc_prior_recurse): Change the
 	method of correction.  Instead of multiplying by a ratio of the
 	number of children, multiply by all the priors up the tree to the
 	root.
	(hier_barrel_total_of_cdoc_word_counts): New function (not used).

	* Makefile.in (STANDARD_METHOD_C_FILES): Renamed from
 	METHOD_C_FILES.
	(METHOD_C_FILES): Set from $(STANDARD_METHOD_C_FILES).
	(DIST_FILES): Use STANDARD_METHOD_C_FILES instead of
	METHOD_C_FILES.  Thus we exclude methods added in Makefile.preamble.

	* rainbow-stats.pl: Changes by Jason Rennie to make it more memory
 	efficient.

	This version in the snaphot for today's date.

	* rainbow.c (rainbow_query): Add new filename argument to
 	bow_wv_new_from_text_fp.
	(rainbow_lisp_query): Likewise.
	(rainbow_test_files): Likewise.
	* arrow.c (arrow_query): Likewise.
	(main): Likewise.
	* crossbow.c (main): Likewise.

	* active.c (active_selection_type): New method "dkl".
	(active_alpha): New static variable.
	(active_beta): New static variable.
	(active_options): New command-line option "active-beta".
	(active_parse_opt): Handle it.
	(active_parse_opt): Look for "dkl" method.
	(active_select_dkl): New function.
	(active_doc_barrel_set_entropy): Use active_alpha.
	(active_wv_density): Likewise.  Make it KL divergence instead of cross
	entropy.
	(active_learn): Turn on and off cross entropy not just for wkl, but
	also for dkl.

Mon Apr 13 14:08:56 1998  Andrew McCallum  <mccallum@jprc.com>

	* Makefile.in: Include file Makefile.preamble, if it is there.
	(%.o:%.c): Move rule down into the Rules section.

	* active.c (active_select_weighted_kl): Use new density
 	calculation to weight the scores by which we select documents for
 	labeling.
	(active_doc_barrel_set_entropy): New function.
	(active_doc_barrel_set_pr_w): New function.
	(active_wv_density): New function.
	(active_doc_barrel_set_density): New function.
	(active_learn): Call active_doc_barrel_set_density().

	* Makefile.preamble: New file.  Moved METHOD_C_FILES appending
	line here.
	* Makefile.local (METHOD_C_FILES): Remove.
	* Makefile.in (METHOD_C_FILES): Remove active.c, em.c and mix.c
 	from here.
	* Makefile.local: Add a line that appends active.c, em.c, and
 	mix.c to METHOD_C_FILES.

	* naivebayes.c (bow_naivebayes_new_odds_ratio_for_ci): Create the
 	RET with a little more space to avoid memory overrun and crash.
  	Set the ratio using a weighted likelihood ratio instead of
 	unweighted.
	(bow_naivebayes_print_odds_ratio_for_all_classes): Print the number of
	words in each class to stderr.

	* rainbow-stats.pl: Include the pruned suffix in the printed
 	message to STDERR when it is used.

	* rainbow.c (rainbow_test): Use BOW_BARREL_CLASSNAME_AT_INDEX on
 	the RAINBOW_DOC_BARREL, instead of using FILENAME_TO_CLASSNAME on
 	the CDOC->FILENAME.  This works better when there is not a
 	one-to-one correspondence between classes and documents.
	(rainbow_test_files): Count the number of classes with
	BOW_BARREL_NUM_CLASSES on the RAINBOW_DOC_BARREL, not the class
 	barrel.  Again this is necessary for methods in which there are
 	multiple mixtures per class, as in the "mixture method.  Set the
 	CURRENT_CLASS using BOW_BARREL_CLASSNAME_AT_INDEX instead of
 	FILENAME_TO_CLASSNAME.

	Now --lex-pipe-command's get the fully-qualified path name of the
	file being lexed in their environment variable RAINBOW_LEX_FILENAME.

	* lex-simple.c (bow_lexer_simple_open_text_fp): New argument
 	FILENAME.  Set the environment variable RAINBOW_LEX_FILENAME
 	before forking a lex pipe command, so the command can have access
 	to this filename.
	* bow/libbow.h (bow_lexer): Make OPEN_TEXT_FP function take a new
 	argument, the filename.  Add FILENAME as an argument to several
 	functions.
	* int4str.c (bow_int4str_new_from_text_file): Pass FILENAME to lex
 	creation function.
	* int4word.c (bow_words_add_occurrences_from_text_dir): Likewise.
	* lex-gram.c (bow_lexer_gram_open_text_fp): New argument FILENAME;
 	pass it on.
	* lex-indirect.c (bow_lexer_indirect_open_text_fp): Likewise.
	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): New argument FILENAME.
  	Pass to lex creation function.
	* wv.c (bow_wv_new_from_text_fp): Likewise.
	* robin.c (robin_index): Pass FILENAME to lex creation function.
	* barrel.c (bow_barrel_add_from_text_dir): Pass FILENAME to
 	bow_wi2dvf_add_di_text_fp().

Mon Mar 30 18:48:19 1998  Andrew McCallum  <mccallum@jprc.com>

	* wa.c (bow_wa_new): Malloc ENTRY.
	(bow_wa_free): Free it.
	(bow_wa_append): Expand ENTRY as necessary.
	* bow/libbow.h (bow_wa): Make ENTRY a separate malloc'ed pointer.

Tue Mar 24 11:19:46 1998  Andrew McCallum  <mccallum@jprc.com>

	Implement variable-depth hierarchies.
	
	* rainbow-h.c (hier_barrel): Remove element CHILDREN_RANKINGS.
  	Add elements DEPTH and LAMBDAS.
	(hier_barrel_new): Initialize LAMBDAS to NULL.
	(hier_barrel_set_depth_and_allocate_lambdas): New function.
	(hier_barrel_free): Free LAMBDAS.
	(EXTRA_CHECKS): Change from 0 to 1.
	(hier_barrel_ancestor): New function.
	(hier_barrel_prob_wi_in_ci_local): If CI == CI_IN_PARENT_ROOT, then
	take probability from root, even if HBARREL is NULL.  This
 	provides a way to use this function to query the root, which was
 	impossible before.
	(hier_barrel_prob_wi_in_ci_shrink): Replace individual calls to
	ancestor word distributions with a loop.
	(hier_barrel_calc_lambda_one_iteration): Likewise.  Return perplexity
	instead of log-probability of the data.
	(hier_barrel_prob_wi_shrink): Since the body only ever work on the
	root, only shrink local and uniform, instead of uniform three
 	times.
	(hier_barrel_initialize_lambdas): Set initial values with loop.
	(hier_barrel_calc_lambda): Keep doing EM iterations until perplexity
	change is less than 0.1, instead of going until all lambdas remain
 	constant.
	(hier_barrel_calc_lambdas): Don't print "Calculting lambda", just
	print the hbarrel name.
	(rainbowh_unarchive): Do some post-processing after unarchiving.  Set
	the depth and allocate lambdas.
	(main): Verbosify the total number of words instead of fprintf'ing it.

Mon Mar 23 19:59:33 1998  Andrew McCallum  <mccallum@jprc.com>

	* naivebayes.c (bow_naivebayes_new_odds_ratio_for_ci): New
 	function.
	(bow_naivebayes_print_odds_ratio_for_all_classes): New function.
	(bow_naivebayes_set_weights): Don't assert that we are using one of a
	limited number of methods.
	(bow_naivebayes_score): Initialize BSCORES[CI].NAME to NULL.
	* bow/naivebayes.h: Declare functions.

	* bow/libbow.h (bow_ws): New structure.
	(bow_wa): New structure.
	Declare new bow_wa_* functions.

	* Makefile.in (LIBBOW_C_FILES): Added mix.c and wa.c
	* wa.c: New file.
	* mix.c: New file.

1998-03-23  Kamal Nigam  <knigam@yawp.jprc.com>

	* em.c (em_no_reset_doc_types): New variable for resetting option.

	* split.c (bow_test_split_for_em_binary): Function removed.
	(bow_test_split3): New function.
	(bow_test_split_for_em_multihump): Function removed.

	* em.c (bow_em_binary_model_counts): Code for fancy counts.
	(bow_em_fancy_counts): Likewise.
	(em_options): Likewise, and for new option --em-no-reset-doc-types.
	(em_parse_opt): Likewise, and for specifying number of multiple
	negative humps.
	(bow_em_new_vpc_with_weights): Changed array lengths to static for
	debugging sanity.  Added code for fancy counts, multiple neg
	humps, and not resetting doc types.  Fixed initial assert to be
	more allowable.
	(bow_em_score): Conditional rescaling so binary scoring works
	correctly.

Mon Mar 23 09:57:11 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_test): Assert that only one trial was
 	requested, because there is no point in testing the training
 	documents twice, and also, otherwise the EM method will mess up.

	* rainbow.c (rainbow_options): New command-line option
 	"test-on-training".
	(rainbow_parse_opt): Handle it.
	(rainbow_test): Implement it.
	(struct rainbow_arg_state): New element TEST_ON_TRAINING.
	(main): Initialize it.

	In naivebayes, use the WEIGHT field of DV's instead of the COUNT
	field. 

	* naivebayes.c (bow_naivebayes_pr_wi_ci): Calculate this from the
 	DV's WEIGHT not from its COUNT.
	(bow_naivebayes_set_weights): Use WEIGHT instead of COUNT.
	(bow_naivebayes_score): Likewise.
	* vpc.c (bow_barrel_new_vpc): Add code to update the
 	CDOC->WORD_COUNT in the DOC_BARREL in order to match the
 	(potentially) pruned vocabulary.  When building the wi2dvf, add
 	WEIGHT correctly for the different event models.
	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): When incorporating the
 	word that has just been tokenized, add one to both the COUNT and
 	the WEIGHT, not just the COUNT.  Note that this will change the
 	way the barrel->wi2dvf is built from data, and barrels tokenized
 	before this change will now be different from barrels tokenized
 	afterwards.  This change is inkeeping with naivebayes' use of the
 	WEIGHT field instead of the COUNT field, although vpc.c has a fix
 	to make the old-style wi2dvf's work.
	* split.c (bow_tmp_word_struct): Add element WEIGHT.
	(bow_test_next_wv): Put WEIGHT into the WV to be returned.

Thu Mar 19 10:45:25 1998  Andrew McCallum  <mccallum@jprc.com>

	* info_gain.c (bow_infogain_per_wi_new_document_event): Renamed
 	from bow_infogain_per_wi_new.
	(bow_infogain_per_wi_new_word_event): New function.
	(bow_infogain_per_wi_new): New function.

Sat Mar  7 11:16:56 1998  Andrew McCallum  <mccallum@jprc.com>

	* dv.c (_bow_dv_index_for_di): In embedded function
 	grow_if_necessary(), grow if LENGTH is >= SIZE, not just ==.
  	Also, add 1 to SIZE before multiplying for growth, so that if SIZE
 	is 1, it will grow.  (Reported by Sean Slattery.)  These changes
	fix bugs that prevented adding to a barrel read from disk.

Fri Mar  6 11:07:32 1998  Andrew McCallum  <mccallum@jprc.com>

	* naivebayes.c (bow_naivebayes_pr_wi_ci): If using the document
 	event model, force special kind of smoothing.
	(bow_naivebayes_score): Change loop over words to be more readable.
	Fix bug in condition for when to use the word count in the query.
  	Properly handle zero-length documents.

Thu Mar  5 12:30:36 1998  Kamal Nigam  <knigam@hurricane.jprc.com>

	* int4str.c (bow_int4str_new_from_string_file): switched
 	reading_numbers back to regular.

Thu Mar  5 11:31:55 1998  Andrew McCallum  <mccallum@jprc.com>

	Implement the "document" event model, i.e. the multi-variate
	Bernoulli. 

	* naivebayes.c (bow_naivebayes_set_weights): If we are using the
 	document event model, don't check that the sum of P(w|c) over all
 	words in a single class equals one, because it isn't true.
	(bow_naivebayes_score): Change the inner loop over words.  If we're
	using the document event model, loop over all words in the
 	vocabulary instead of just the words in the query.  When
 	incorporating the probability of a word that does not occur in the
 	query document, make it 1-p.  Don't use the count of the word when
 	using the document event model.
	* vpc.c (bow_barrel_new_vpc): Assert that the word count is
 	non-zero before adding a count of 1 when using the document event
 	model.

Thu Mar  5 11:18:16 1998  Kamal Nigam  <knigam@hurricane.jprc.com>

	* .cvsignore: added kl-div

	* active.c (active_selection_type): added vote entropy.
	(active_parse_opt): Likewise.
	(active_no_final_em): New option for not finishing with an EM round.
	(active_options): Likewise.
	(active_parse_opt): Likewise.
	
	(active_document_entropy): New function.
	(active_select_weighted_kl): Correct weighting metric
	(active_select_vote_entropy): New function.
	(active_learn): prune vocab and set word counts at each round.  add
	code for active_no_final_em option.  turn off cross entropy for
 	final model building.

	* barrel.c (bow_barrel_printf): fixed array bounds bug.

	* em.c (bow_em_new_vpc_with_weights): set word counts after pruing
 	the vocab.  Remove buggy conditions when calculating normalizer.

Mon Mar  2 14:51:32 1998  Andrew McCallum  <mccallum@jprc.com>

	This version used for the ICML'98 hierarchical classification paper.

	* rainbow-h.c (hier_barrel_prob_wi_in_ci_local): Don't assert that
 	LOCAL_COUNT > 0, just return the uniform distribution if it is.
	(hier_barrel_calc_lambda_one_iteration): Don't assert that LAMBDA must
	be greater than 0, (because sometimes EM makes it go to zero);
 	just print a warning if it is.
	(_hier_barrel_set_node_scores): Goto DO_CHILDREN only if we are
	pruning, not always whenever SCORE is -FLT_MAX.  Remove
 	bow_error() call for HIER_STRUCTURE!=HIER_LEAF.
	(hier_barrel_score): Initialize the root HBARREL->SCORE to 1.
	(main): Print the number of words in each top-level branch, and the
	total number of words.

Fri Feb 20 13:04:45 1998  Andrew McCallum  <mccallum@jprc.com>

	* active.c (active_document_entropy): New function.
	(active_select_weighted_kl): Use it to weight document selection
	weights by e^(-KLdiv).

Thu Feb 19 11:46:14 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (rainbowh_options): new command-line option
 	"scoring-pruning".
	(struct rainbowh_arg_state): New element SCORING_PRUNING_NUM_CHILDREN.
	(rainbowh_parse_opt): Handle it.
	(hier_barrel_prob_wi_in_ci): Raise error if we try to use wittenbell
	smoothing.
	(_hier_barrel_set_node_scores): Pay attention to
	SCORING_PRUNING_NUM_CHILDREN.
	(main): Initialize SCORING_PRUNING_NUM_CHILDREN.

Fri Feb 20 12:45:30 1998  Kamal Nigam  <knigam@server7.jprc.com>

	* bow/em.h (em_cross_entropy): made extern

	* em.c (em_cross_entropy): made non-static

	* active.c (active_selection_type): added new type length.
	(active_parse_opt): added new length selection method.
	(active_select_qbc): reverted some changes lost from bad conflict
	resolution.
	(active_select_weighted_kl): fixed bugs to make run.
	(active_select_length): New function.
	(active_learn): create a dummy vpc barrel before trying to set word
	counts.  turn off crossentropy for generating test stats.

Wed Feb 18 20:36:38 1998  Andrew McCallum  <mccallum@jprc.com>

	* em.c (em_cross_entropy): Renamed from em_crossentropy.
	(bow_em_score): Make it do cross entropy if above var is non-zero.

Wed Feb 18 20:08:03 1998  Kamal Nigam  <knigam@server7.jprc.com>

	* active.c (active_parse_opt): new option for new selection method
 	wkl

	* em.c (em_parse_opt): new option for crossentropy scoring
	(em_crossentropy): Likewise.

Wed Feb 18 20:24:57 1998  Andrew McCallum  <mccallum@jprc.com>

	* naivebayes.c (naivebayes_cross_entropy): New static variable,
 	turned off by default.
	(bow_naivebayes_score): Obey it.

	* active.c (active_select_weighted_kl): New function.

Wed Feb 18 20:08:03 1998  Kamal Nigam  <knigam@server7.jprc.com>

	* bow/libbow.h (bow_smoothing): added goodturing.
	(bow_cdoc_yes): prototype for new function.
	(bow_smoothing_goodturing_k): new global for options.

	* bow/em.h (bow_em_pr_struct): New from em.c

	* em.c (bow_em_pr_struct): moved to header file.

	* naivebayes.c (bow_naivebayes_initialize_goodturing): new
 	function.
	(bow_naivebayes_goodturing_discounts): new variable.
	(bow_naivebayes_goodturing_barrel): new variable.
	(bow_naivebayes_pr_wi_ci): added option for goodturing smoothing
	(bow_naivebayes_set_weights): Likewise.

	* split.c (bow_cdoc_yes): new function.

	* opts.c (bow_options): added option smoothing-goodturing-k and
 	added to smoothing-method option.
	(parse_bow_opt): Likewise.

	* Makefile.in (LIBBOW_C_FILES): add goodturing.c
	* active.c (active_select_relevant): fixed so it picks most
 	relevant docs instead of least relevant.
	(active_remap_scores): New function.
	(active_parse_opt): New options for remapping scores to probabilities.
	(active_pr_print_stat_summary): Likewise.
	(active_pr_window_size): Likewise.
	(active_remap_scores_pr): Likewise.
	(active_learn): add word count calculation.  Call remap for new option.

Wed Feb 18 14:04:00 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_test): Handle case where
 	RAINBOWH_ARG_STATE.VOCAB_SIZE is zero.  Now we can do tests with
 	the full, unpruned vocabulary.

Tue Feb 17 17:05:54 1998  Andrew McCallum  <mccallum@jprc.com>

	* info_gain.c (bow_infogain_per_wi_new): Use correct type in RET
 	allocation.

Mon Feb 16 17:11:21 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_options): New command-line option
 	"testing-files-use-basename".
	(rainbow_parse_opt): Handle it.
	(rainbow_test): Remove old document iteration code.
	* split.c (bow_test_set_files): Obey
 	BOW_TEST_SET_FILES_USE_BASENAME.
	(BASENAME_ONLY): Macro removed.
	* opts.c (bow_test_set_files_use_basename): New global variable.
	* bow/libbow.h: Declare new global variable.

Sat Feb 14 09:54:33 1998  Andrew McCallum  <mccallum@jprc.com>

	This version used for most ICML results.
	* rainbow-h.c (hier_barrel): New element CLASS_WORD_COUNT.
	(str_match_len): Move it out of hier_barrel_filename_to_classname.
	(hier_barrel_for_filename): New function.
	(hier_barrel_set_class_word_count): New function.
	(hier_barrel_wi_count): New function.
	(EXTRA_CHECKS): New macro.
	(hier_barrel_prob_wi_in_ci_local): New argument LOO_G1CHILD_CI.  This
	allows you to leave out a grandchild from the stats.
	(hier_barrel_prob_wi_in_ci_shrink): Likewise.
	(hier_barrel_prob_wi_local): New argument LOO_CHILD_CI.  This allows
	you to leave out a child from the stats.
	(hier_barrel_prob_wi_shrink): Likewise.
	(LOO_CI_IN_PARENT): New macro.
	(LOO_PARENT_CI_IN_G1PARENT): New macro.
	(hier_barrel_calc_lambda_one_iteration): Use New arguments to prob
	functions.

Thu Feb 12 16:12:24 1998  Kamal Nigam  <knigam@server7.jprc.com>

	* bow/em.h (em_perturb_starting_point_by_variance): Made
 	externally viewable.
	(bow_em_num_em_runs): Likewise.

	* rainbow.c (rainbow_test): Added warning message if going into
 	buggy code.

	* em.c (em_perturb_starting_point_by_variance): Made non-static so
 	active.c can change its value.
	(bow_em_num_em_runs): Likewise.
	(bow_method_em): Added element for bow_barrel_free.

	* active.c (active_final_em): new global for new option.
	(active_print_committee_matrices): Likewise.
	(active_qbc_low_kl): Likewise.
	(active_options): added three new options.
	(active_parse_opt): Likewise.
	(active_select_qbc): Fixed for roundoff error.  Added code for new
	option.
	(active_learn): Print the names of initial docs.
	Code for new options.  Change all non-test docs back to model at
 	end.
	(active_test): Change to use new heap routine that gets all docs.

Wed Feb 11 10:05:34 1998  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_free_barrel): Remove check for NULL function,
 	so that the absence of this function will be noticed.  Previously
 	we had not noticed that em's barrel free function was NULL, and
 	where getting major memory leaks.

Tue Feb 10 18:26:53 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (main): Fix typos.

	Make --prune-vocab-by-occur-count and --prune-vocab-by-doc-count
	work in conjunction with --print-barrel.
	* rainbow.c (main): Obey options -O and -D before doing things
 	that don't update the vocab on their own.
	* wi2dvf.c (bow_wi2dvf_hide_words_by_occur_count): New function.
	* int4word.c (bow_words_occurrences_for_wi): Just return 0 when WI
 	is too large, instead of raising an assertion.

Mon Feb  9 18:00:40 1998  Andrew McCallum  <mccallum@jprc.com>

	* vpc.c (bow_barrel_new_vpc): Assert that the cdoc's from the
 	DOC_BARREL are at least as large as necessary.  This can fail when
 	reading from a disk archive that was created before CLASS_PROBS
 	was added to BOW_CDOC.

	* rainbow.c: Initialize DOC_CDOC, when using bow_test_next_wv()!

	* normalize.c (bow_wv_normalize_weights_by_vector_length): Handle
 	an empty WV.
	(bow_wv_normalize_weights_by_summing): Likewise.

	* naivebayes.c (naivebayes_normalize_log): New static variable.
	(naivebayes_rescale_scores): New static variable.
	(naivebayes_final_rescale_scores): New static variable.
	(naivebayes_options): New command-line option
	"naivebayes-normalize-log". 
	(naivebayes_parse_opt): Handle it.
	(bow_naivebayes_pr_wi_ci): Fix Witten-Bell.  It should now be working
	properly.
	(NO_SCALING): Macro removed, replaced by NAIVEBAYES_RESCALE_SCORES.
	(bow_naivebayes_score): Calculate the entropy of words in the
	document, H_W_D, although it is currently unused.  Do scaling or
 	not depending on new static variable.  Handle
 	NAIVEBAYES_NORMALIZE_LOG: when scoring, instead of using exp(),
 	return -1/(log(P(C|d)^3)) rescaled so highest is -2, normalized to
 	sum to one instead of P(C|d).  This results in values that are not
 	so close to zero and one.

	* em.c (em_options): New command-line option
 	"em-score-normalize-log".
	(em_parse_opt): Handle it.
	(bow_em_score): Obey it.  When scoring, return -1/(log(P(C|d)^3)
	(where the scores have been rescaled so that the highest value is -2),
	normalized to sum to one instead of P(C|d).  This results in
 	values that are not so close to zero and one

Mon Feb  9 17:52:18 1998  Kamal Nigam  <knigam@server7.jprc.com>

	* em.c (em_score_normalize_log): new option.
	(bow_em_perturb_weights): fixed bug for calculating perturbation.
	(bow_em_score): code for new normalization option

Sat Feb  7 12:41:39 1998  Andrew McCallum  <mccallum@jprc.com>

	* active.c (active_select_qbc): Set WEIGHT to average
 	KL-divergence-to-the-mean, not average entropy.

1998-02-07  Kamal Nigam  <knigam@tsunami.jprc.com>

	* active.c (active_options): added active-committee-size
	(active_select_qbc): checked for p(w_c) = 0

	* em.c (bow_em_perturb_weights): fix looping and calculation bugs
	(bow_em_new_vpc_with_weights): skip E-step on last iteration

	* active.c (active_selection_type): changes for committee learning
	(active_learn): made changes to support committee learning

Fri Feb  6 10:36:19 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_correct_cdoc_prior): Check prior
 	consistency more carefully.
	(HBARREL_LAMBDA_PARENT): New macro.
	(hier_barrel_calc_lambda_one_iteration): Increment with COUNT, not ++!
	When printing P(w|c) for Agriculture/Org, print the count.  Use
 	new macro; particularly when calculating LOG_PROB_OF_DATA where
 	the old version did not use the correct value for lambda parent.
  	Use COUNT in calculation of LOG_PROB_OF_DATA.
	(hier_barrel_calc_lambda): Print ">" when LOG_PROB_OF_DATA goes down
	in order to help debugging.
	(hier_barrel_calc_lambdas): Get NUM_WORDS in the class, then print it,
	so we can see it with the EM iteration numbers.

	* vpc.c (bow_barrel_set_vpc_priors_by_counting): Print warning if
 	class has zero prior.

	* em.c (em_options): New command-line option
 	"em-perturb-starting-point".
	(em_parse_opt): Handle it.
	(random_double): New static function.
	(bow_em_gaussian): New function.
	(bow_em_perturb_weights): New function.
	(bow_em_new_vpc_with_weights): Use it.

	* active.c (active_select_qbc): Added assertion.

1998-02-06  Kamal Nigam  <knigam@tsunami.jprc.com>

	* active.c: changes for compilation bugs

	* bow/libbow.h (bow_test_set_files): added prototype

	* split.c (bow_random_set_seed): new function.
	(bow_test_split): Uses bow_random_set_seed.
	(bow_test_split2): Likewise.
	(bow_test_split_for_em_binary): Likewise.
	(bow_test_split_for_em_multihump): Likewise.
	(bow_ignore_split): Likewise.

Fri Feb  6 10:36:19 1998  Andrew McCallum  <mccallum@jprc.com>

	* active.c (active_commitee_size): New static variable.
	(active_options): New command-line option "committee-size".
	(active_parse_opt): Handle it.
	(active_select_qbc): New function.
	(active_select_uncertain): Add new COMMITTEE_SIZE argument.
	(active_select_relevant): Likewise.
	(active_select_random): Likewise.

1998-02-06  Kamal Nigam  <knigam@tsunami.jprc.com>

	* em.c (em_parse_opt): added check for --em-num-iterations

	* bow/libbow.h (bow_test_split2): new prototype for removed option
	em_seed
	
	(bow_split_seed): new option.

	* split.c (already_seeded): new variable to ensure only one
	seeding
	(bow_test_split): code for already_seeded and new option --split-seed
	(bow_ignore_split): Likewise.
	(bow_test_split2): Likewise.
	(bow_test_split_for_em_binary): Likewise.
	(bow_test_split_for_em_multihump): Likewise.

	* rainbow.c (rainbow_test): moved print statement for run header
	for active learning

	* opts.c (bow_split_seed): new variable for new option
	(bow_options):  code for new option --split-seed
	(parse_bow_opt): likewise

	* em.c (em_parse_opt): added new option --em-no-splitting and
	removed option --em-split-seed
	(bow_em_new_vpc_with_weights): added code for active learning to be
	compatible.  removed em-split-seed option (superseeded by a bow
	option) and added --em-no-splitting option
	
	* Makefile.in (METHOD_C_FILES): added active.c

	* active.c: new file.

Wed Feb  4 21:18:54 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (rainbowh_options): New command-line option
 	"print-lambdas-to-file".
	(rainbowh_parse_opt): Handle it.
	(struct rainbowh_arg_state): New member LAMBDA_FP.
	(hier_barrel_calc_lambda_one_iteration): Change all floats to doubles.
	When running through word data in E-step, explicitely skip words
 	that are not in the vocabulary, even though it shouldn't be
 	necessary, since bow_model_next_wv() should not include them
 	anyway.  Add some assertions and debugging verbosity.  Handle new
 	command-line option.
	(hier_barrel_calc_lambda): Base stopping condition on the sum of
	diff's across all lambda's, not just the child lambda.
	(hier_barrel_calc_lambdas): Handle LAMBDA_FP.
	(main): Likewise.

	* naivebayes.c (naivebayes_parse_opt): Make command-line option
 	"naivebayes-m-est-m" work.
	(bow_naivebayes_pr_wi_ci): Likewise.  Try to fix Witten-Bell, but
	still not working.  Use doubles instead of floats.
	(bow_naivebayes_set_weights): Use bow_naivebayes_pr_wi_ci().

Mon Feb  2 18:49:02 1998  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h: Declare new functions and global variables.
	(bow_event_models): New type.
	(bow_dv_heap): New members HEAP_WV, HEAP_WV_DI and LAST_DI, for use
	with new function bow_heap_next_wv().

	* heap.c (bow_make_dv_heap_from_wi2dvf): Initialize new members of
 	bow_dv_heap structure.

	* naivebayes.c (NO_SCALING): New macro to turn off rescaling of
 	scores.  Currently set so that Scaling is used.
	(bow_naivebayes_score): Handle "document event model" BOW_EVENT_MODEL.

	* opts.c (bow_event_model): New global variable.
	(bow_options): New command-line option "event-model".
	(parse_bow_opt): Handle it.

	* rainbow-h.c (rainbowh_options): New option "print-doc-names".
	(hier_barrel_correct_cdoc_prior_recurse): New function.
	(hier_barrel_total_of_cdoc_priors): New function.
	(hier_barrel_correct_cdoc_prior): New function.
	(hier_barrel_prune_words_not_in_map_and_set_vpc): Call new function
	hier_barrel_correct_cdoc_prior() at end.
	(hier_barrel_set_local_class_model): Raise an error if
	BOW_PRUNE_VOCAB_BY_INFOGAIN_N.
	(hier_barrel_set_vpc_and_populate_lower_branches): Use new function
	bow_heap_next_wv().
	(hier_barrel_set_vpc_and_populate_lower_branches): Call new function
	hier_barrel_correct_cdoc_prior() at end.
	(IMPOSSIBLE_SCORE_FOR_ZERO_CLASS_PRIOR): New macro.
	(_hier_barrel_local_score): Use it.  Empty documents now allowed!
	Move the initialization of NUM_WORDS_IN_QUERY_WV down after
 	setting of priors, because sometimes the document is empty anyway.
	(_hier_barrel_set_node_scores): Declare PARENT_SCORE double instead of
	float.
	(hier_barrel_test): Use hacked-up for-loop to make sure we don't skip
	empty documents.  Print scores with precision based on
 	BOW_SCORE_PRINT_PRECISION.
	(main): Handle new command line option.

	* rainbow.c (rainbow_parse_opt) [USE_VOCAB_IN_FILE_KEY,
 	HIDE_VOCAB_IN_FILE_KEY]: Use bow_int4str_new_from_text_file(), not
 	bow_int4str_new_from_text_string().  This makes the rainbow-h
 	infogain files useable for in this context.
	(rainbow_test): When determining when to alloca() HITS, use a
	condition on HITS, not TN, because TN is set past 0 when
 	--testing-files is used!  Use new function bow_heap_next_wv() for
 	looping through all test documents.  Only free EMPTY_WV if it is
 	non-NULL.

	* split.c (BASENAME_ONLY): Changed from 1 to 0.  Now when using
 	--testing-files, we compare the entire filename path, not just the
 	basename.  Warning: The AAAI'98 Reuters experiments relied on the
 	old setting.
	(bow_heap_next_wv_guts): New function.
	(bow_heap_next_wv): New function.
	(bow_cdoc_is_model): New function.
	(bow_cdoc_is_test): New function.

	* vpc.c (bow_barrel_new_vpc): Count the number of documents
 	properly by running through list of documents, not be looking at
 	DV's!  Handle the event=document bow_event_model.  Verbosify the
 	number of documents in each class.
	(bow_barrel_set_vpc_priors_by_counting): Change PRIOR_SUM from float
	to double.

	* TODO: Append email from Doug.

	* evi.c (_register_method_evi): Add new argument to
 	bow_register_with_name().

Fri Jan 30 10:49:28 1998  Andrew McCallum  <mccallum@jprc.com>

	* methods.c (bow_method_register_with_name): New argument CHILD
 	allows the automatic setting of the GROUP index in the options, so
 	that the help message for options will get grouped together at the
 	bottom of the help message.

	* knn.c (_register_method_knn): Add new argument to
	bow_method_register_with_name(). 
	* kl.c (_register_method_kl): Likewise.
	* em.c (_register_method_em): Likewise.
	* tfidf.c (_register_method_tfidf_): Likewise.
	* prind.c (_register_method_prind): Likewise.
	* naivebayes.c (_register_method_naivebayes): Likewise.
	* bow/libbow.h: Add new argument to
 	bow_method_register_with_name().

	* configure.in: Check for alloca.h, needed on DEC alpha machines.
	Suggested by Jason Rennie.

Wed Jan 28 17:45:34 1998  Andrew McCallum  <mccallum@jprc.com>

	* wi2dvf.c (bow_wi2dvf_hide_words_by_doc_count): Return
 	immediately if COUNT is 0.

	* rainbow.c (rainbow_options): New command-line option
 	"hide-vocab-indices-in-file".
	(rainbow_parse_opt): Handle it.
	(struct rainbow_arg_state): New member HIDE_VOCAB_INDICES_FILENAME.
	(rainbow_test): Implement new option.  Print scores even for empty
	documents.  They were skipped before.
	(main): Implement new option.

	* opts.c (bow_prune_words_by_doc_count_n): New global variable.
	(bow_options): New command-line option "prune-vocab-by-doc-count".
	(parse_bow_opt): Handle it.
	* bow/libbow.h: Declare new command-line option global variable.

	* int4word.c (bow_words_keep_top_by_infogain): Use qsort() instead
 	of previous N^2 implementation.

	* int4str.c (bow_int4str_new_from_string_file): If the first word
 	is all numbers, read interpret the strings as word indices instead
 	of strings.

	* barrel.c (bow_barrel_printf): Implement new format indicator,
 	'I'.  Print in format used by Mehran Sahami's feat-sel program.

Wed Jan 21 17:39:12 1998  Andrew McCallum  <mccallum@jprc.com>

	This version used for AAAI-98 submission.  CVS tagged with
	`aaai98-submission'.

	* rainbow.c (main): Move rainbow_word_count_printing below "Do
 	things that require the vocabulary or class/word weights to have
 	been updated" so that the class barrel will be re-made and
 	up-to-date.  Temporarily, call
 	bow_naivebayes_print_odds_ratio_for_class() for implementing the
 	--weight-vector option.

	* naivebayes.c (bow_naivebayes_print_odds_ratio_for_class): New
 	function.
	(bow_naivebayes_set_weights): Set IDF to P(w).

Wed Jan 21 17:39:53 1998  Kamal Nigam  <knigam@hurricane.jprc.com>

	* rainbow.c (rainbow_test): changes to support --em-multi-hump-neg
	* em.c (bow_em_new_vpc_with_weights): added support for new options
        --em-multi-hump-neg and --em-even-unlabeled-priors
        (bow_em_score): Likewise.

	* split.c (bow_test_split_for_em_multihump): New function.

Thu Jan 22 16:08:13 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_prune_words_not_in_map_and_set_vpc): No
 	longer unhiding the vocabulary at the end of the function.  Yipes.
  	Is this OK?
	(hier_barrel_set_local_class_model): Likewise.
	(_hier_barrel_local_score): No longer zero NUM_WORDS_IN_QUERY_WV at
	declaration time; do it just before the loop that counts them.  In
 	the loop, before incrementing for a particular word, check agains
 	the RAINBOWH_ARG_STATE.VOCAB_MAP, not the
 	HBARREL->CLASS_BARREL->WI2DVF!
	(hier_barrel_test): Expand comment about the loop over test documents
	skipping document that don't have any words in the vocabulary.

	* wicoo.c (bow_barrel_shrink_wv): New function.  Currently empty.

Sat Jan 17 12:27:41 1998  Andrew McCallum  <mccallum@jprc.com>

	* em.c (bow_em_new_vpc_with_weights): Only free BEST_WI2DVF under
 	correct conditions.  This fixes bug whereby rainbow produces no
 	output.

Fri Jan 16 09:51:46 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_options): New command-line option
 	"hide-vocab-in-file".
	(rainbow_parse_opt): Handle it.
	(struct rainbow_arg_state): New element hide_vocab_map.
	(rainbow_query): Handle --hide-vocab-in-file, and, importantly, put
	bow_keep_top_words_by_infogain above the bow_barrel_prune_vocab_
 	functions so that they will actually have an effect!  Remember,
 	bow_keep_top_words_by_infogain begins by unhiding all words!
	(rainbow_lisp_setup): Initialize rainbow_arg_state.hide_vocab_map.
	(rainbow_test): Put the bow_barrel_prune_vocab_ function calls inside
	the trial for()-loop, after the bow_keep_top_words_by_infogain,
 	for the same reason as above!
	(main): Handle --hide-vocab-in-file, and, importantly, put
	bow_keep_top_words_by_infogain above the bow_barrel_prune_vocab_
 	functions so that they will actually have an effect!

	* naivebayes.c (bow_naivebayes_pr_wi_ci): In wittenbell, use
 	LOO-adjusted class word count instead of CDOC->NUM_WORDS.

	* barrel.c (bow_barrel_prune_words_in_map): New function.
	* bow/libbow.h: Declare new function.

	* split.c (bow_basename): Fix so it will strip the leading `/'.

	* opts.c (bow_smoothing_method): New global variable.
	(bow_options): New command line option "smoothing-method";
	currently takes "laplace", "mestimate" and "wittenbell".
	"mestimate" is not yet implemented.
	(parse_bow_opt): Handle it.
	* bow/libbow.h (bow_smoothing): New enum typedef.
	(bow_smoothing_method): Declare new global variable set by opts.c.
	* naivebayes.c (bow_naivebayes_pr_wi_ci): Use different smoothing
 	methods depending on BOW_SMOOTHING_METHOD; laplace and wittenbell
 	implemented.
	* kl.c (bow_kl_score): Previously used wittenbell smoothing all
 	the time.  Now use wittenbell only if indicated on command-line
 	with --smoothing-method, otherwise use laplace.

Thu Jan 15 11:47:00 1998  Andrew McCallum  <mccallum@jprc.com>

	* vpc.c (bow_barrel_new_vpc): Remove assertion that all classes
 	have some words in their training data after vocabulary pruning.
	(bow_barrel_set_vpc_priors_by_counting): When calculating class
	priors, don't count documents that are not in the MODEL set!

	* rainbow.c (rainbow_test): Fix typo.

	* naivebayes.c (bow_naivebayes_score): If a class has a zero class
 	prior, set the score to a special flagged value, and then when
 	returning scores in the array, make those scores be -DBL_MAX.
	Now, for the first time, naivebayes can handle classes that have no
	training documents in them.

Thu Jan 15 14:15:22 1998  Kamal Nigam  <knigam@hurricane.jprc.com>

	* em.c (bow_em_new_vpc_with_weights): Fixed two memory leaks.

Thu Jan 15 11:47:00 1998  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_score_print_precision): New variable extern
 	declaration.

	* kl.c (bow_kl_score): Assert QUERY_WORD_COUNT to make sure we're
 	not trying to classify an empty document.

	* em.c (bow_em_compare_to_nb): Use BOW_SCORE_PRINT_PRECISION when
 	printing scores.

	* bow/libbow.h (bow_stoplist_replace_with_file): New function
 	declaration.

Thu Jan 15 11:39:44 1998  Kamal Nigam  <knigam@hurricane.jprc.com>

	* opts.c (bow_score_print_precision): New option, defaults to 10.
	(parse_bow_opt): Support for new option.

	* rainbow.c (rainbow_query): Print precision obeys new option.
	(rainbow_test): Likewise.
	(rainbow_test_files): Likewise.

	* naivebayes.c (naivebayes_binary_scoring): New option.
	(naivebayes_parse_opt): Support for new option.
	(bow_naivebayes_score): Support for new option.  If binary scoring,
	don't move scores out of log space or normalize them.  This
 	alleviates the 0-1 problem, at the cost of losing probabilities.

	* bow/libbow.h (bow_score): Changed weight from float to double.
	(bow_test_split2): Added prototype.

	* split.c (bow_ignore_split): New function.
	(bow_test_split2): Allows there to be too few documents to grab, and
	just grabs all of them if that's its only choice.  Takes an
 	optional random seed for seeding the random number generator.
	(bow_test_split_for_em_binary): New function.

	* em.c (use_priors_for_initial_class_probs): flipped value from 0
 	to 1
	(unlabeled_normalizer): moved from predefined value to an option
	(bow_em_num_em_runs): Likewise
	(bow_em_print_word_vector): Likewise
	(bow_em_making_barrel): if doing binary scoring, still use
	probabilities for rounds of EM
	(EM_LABELED_NUM_BY_CLASS): changed name from EM_UNLABELED_NUM_BY_CLASS
	(em_binary_pos_classname): added option for binary case
	(em_binary_neg_classname): added option for binary case
	(bow_em_unlabeled_num): added option for specifying number of
	unlabeled docs
	(bow_em_print_probs): added option to print word probabilities for
	kl-div across runs
	(bow_em_binary_case): added option for binary classification
	(bow_em_split_seed): added random seed option to facilitate paired
	trials
	(em_parse_opt): added support for new options
	(bow_em_new_vpc_with_weights): Added support for binary
	classification, although it's commented out now.  Makes only
 	initial labeled docs be all positive ones and sets priors of
 	unlabeled docs to be all negative.  Added support for seeding the
 	random number generator for labeled docs so we can have paired
 	trials.  Added support for specifying the number of unlabeled
 	docs.  This requires a new doc type, so conditions on doc types
 	have changed slightly.  If pruning vocab by info gain, we need to
 	do this after the labeled docs are selected instead of before the
 	barrel is built, so this logic is added in here.  Allow number of
 	labeled docs to be zero.  In this case, we need to be careful
 	about calculating priors with no docs, and also need to initialize
 	the class vectors randomly.  Added condition around printing class
 	probabilities with new option.  Only score docs for score to prob
 	mapping if its needed by the method.  Make naive bayes scoring
 	respect the unlabeled_normalizer.
	(bow_em_set_priors_using_class_probs): made condition changes for new
	doc type.
	(bow_em_score): Change the scoring if doing binary classification.
	Don't convert back from log space and don't normalize.  We lose
 	probabilities, but it avoids the 0-1 problem, and we can still
 	rank the predictions.

Tue Jan 13 14:41:55 1998  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_query): Print scores with precision %.20g
 	instead of default 6.
	(rainbow_test): Likewise.
	(main): When printing top words by infogain with -I, if
	--testing-files was on the command line, then do this test/train
 	split before calculating the infogains.

Thu Jan  8 12:56:22 1998  Andrew McCallum  <mccallum@jprc.com>

	* opts.c (bow_options): New command-line option
 	"replace-stoplist-file".
	(parse_bow_opt): Handle it.
	* stoplist.c (bow_stoplist_replace_with_file): New function.

Wed Jan  7 17:14:59 1998  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h (bow_doc_type): Added types UNUSED_MODEL and
 	UNUSED_IGNORE.

Tue Jan  6 16:39:30 1998  Andrew McCallum  <mccallum@jprc.com>

	* em.c (bow_em_new_vpc_with_weights): When printing P(C|w)
 	distributions, initialize TOTAL_WORD_COUNT inside the loop over
 	words!

	* int4word.c (bow_int2word): If INDEX is larger than the number of
 	words in the underlying word map, return NULL.

	* em.c (bow_em_new_vpc_with_weights): After the M-step, before the
 	E-step, print out the P(C|w) distribution for all words to a file
 	named pcw01, where "01" is the EM-iteration number.

	* int4word.c (bow_word2int_no_add): New function.
	* bow/libbow.h: Declare new function.

Sun Dec 21 20:36:08 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_options): Document --print-barrel's FORMAT
 	better.

	* Makefile.in (DIST_FILES): Added $(METHOD_C_FILES).

	* rainbow.c (rainbow_options): New command-line option
 	"index-printed-barrel".
	(rainbow_parse_opt): Handle it.  Add a term to the conditions under
	which we complain about "Need data from more than one class"
 	because when doing --index-printed-barrel the filename is in the
 	place of a classname, and there is supposed to be only one.
	(rainbow_index_printed_barrel): New function.
	(main): Handle two different ways of what_doing == rainbow_indexing.
	* barrel.c (getline): New function.
	(bow_barrel_new_from_printed_barrel_file): New function.
	* bow/libbow.h: Declare new function.

Wed Dec 17 14:47:40 1997  Andrew McCallum  <mccallum@jprc.com>

	* lex-simple.c (bow_not_isspace): New function.
	(_bow_white_lexer): Instead of insisting on starting with a alphabetic
	character, downcasing and stoplisting, etc, instead just grab
 	tokens delimited by whitespace, making no changes to the contents.
	* bow/libbow.h: Change comment on BOW_WHITE_LEXER.
	(bow_default_lexer_white): New declaration.
	* opts.c (bow_options): New command-line option "lex-white".
	(parse_bow_opt): Implement it.
	* deflexer.c: Add a lexer structure for BOW_DEFAULT_LEXER_WHITE.

	* int4str.c (_str2id): Re-written to make sure it never returns 0,
 	which would cause an infinite loop in _str_hash_add().

Tue Dec 16 12:24:49 1997  Andrew McCallum  <mccallum@jprc.com>

	* kl-div.c: New file.
	* Makefile.in (kl-div): New target.
	(OTHER_C_FILES): New variable, includes kl-div.
	(DIST_FILES): Add it.
	(libbow.a): Include the $(METHOD_O_FILES) in there too, so that simple
	executables like kl-div can properly get the default_lexer.
	(all): Added kl-div.
	(default): Target now just depends on `all'.

Mon Dec 15 14:35:16 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (rainbow_unarchive): Use filename_to_classname() when
 	initializing CLASSNAMES.

	* wicoo.c: New file.  Builds a structure for calculating 
	word co-occurrence statistics.
	* Makefile.in (LIBBOW_C_FILES): Added wicoo.c.

	* arrow.c: Include headers for socket server implementation.
	(arrow_options): New command-line option "query-server" and "print-coo"
	(struct arrow_arg_state): New element SERVER_PORT_NUM.
	(arrow_parse_opt): Implement new options.
	(arrow_query): Take new arguments for in and out FILE*'s.  Print
	filenames instead of file contents.
	(arrow_socket_init): New function.
	(arrow_serve): New function.
	(arrow_coo): New function.
	(main): Call new functions.

	* rainbow-h.c (rainbowh_options): New command-line option
 	"print-word-probabilities".
	(rainbowh_parse_opt): For 't', be smarter about warning when this badly
	interacts with --use-vocab-in-file.  Likewise for
 	`--use-vocab-in-file'.  Implement new option.
	(hier_barrel_class_index_of_classname): New function.
	(hier_barrel_prob_wi_uniform): New function.
	(hier_barrel_prob_wi_in_ci_local): Use it.
	(hier_barrel_prob_wi_in_ci_shrink): Likewise.
	(hier_barrel_prob_wi_local): Likewise.
	(hier_barrel_prob_wi_shrink): Likewise.
	(hier_barrel_print_word_probabilities_for_class): New function.
	(_hier_barrel_local_score): Avoid counting out-of-vocabulary words
	when calculating NUM_WORDS_IN_QUERY_WV.
	(hier_barrel_set_lambdas): New function
	(hier_barrel_test): Call it.
	(main): No longer avoid handling BOW_PRUNE_VOCAB_BY_OCCUR_COUNT_N.
	Handle new options.

	* kl.c (bow_kl_score): When setting QUERY_WORD_COUNT be sure to
 	only count the words that are part of the barrel's vocabulary.
  	Use QUERY_WORD_COUNT properly for leave-one-out evaluation instead
 	of only the number of times the word in question occurs.

	* naivebayes.c (bow_naivebayes_pr_wi_ci): New function.
	(bow_naivebayes_print_word_probabilities_for_class): New function.
	(bow_naivebayes_score): Get the total number of words in the query for
	doing proper leave-one-out evaluation.  Use
 	bow_naivebayes_pr_wi_ci() instead of calculating it locally.

	* dv.c (bow_dv_add_di_count_weight): Verbosify about count
 	overflow at level BOW_PROGRESS instead of BOW_VERBOSE.

	* split.c (BASENAME_ONLY): New macro.
	(bow_basename): New function.
	(bow_test_set_files): Use it for comparing basename of file only.
	Useful for comparisons of hier vs non-hier file lists.

	* wi2dvf.c (bow_wi2dvf_remove_wi): Call bow_error() because this
 	function is currently broken.
	(bow_wi2dvf_hide_words_by_doc_count): New function.
	(bow_wi2dvf_dv): Use ABS() when examining SEEK_START, to interact
	properly with word hiding when words haven't yet been read in.

	* vpc.c (bow_barrel_new_vpc): Assert DOC_BARREL->CLASSNAMES.

	* rainbow.c (*_KEY): Replace #define's with enum.
	(rainbow_options): New option "print-word-probabilities".
	"print-barrel" now takes an optional argument.
	(struct rainbow_arg_state): New element BARREL_PRINTING_FORMAT.
	(rainbow_parse_opt): Handle new options.
	(rainbow_unarchive): If RAINBOW_DOC_BARREL->CLASSNAMES is NULL, create
	it and fill it.  This is necessary when reading old barrels that
 	didn't archive CLASSNAMES.
	(rainbow_socket_init): Reformat.
	(rainbow_serve): Likewise.
	(rainbow_test_files): In nested function test_file(), make sure the
	file passes the bow_fp_is_text() test.  Otherwise we the counts
 	are off when doing leave-one-out-evaluation.
	(main): Move the barrel printing after the vocabulary reduction, and
	call with new argument.

	* bow/libbow.h: Declare new function.
	(assert): New commented out macro that is useful when the builtin
	assert() doesn't allow the debugger to examine the error-full
 	frame.

	* lex-html.c (bow_lexer_html_get_raw_word): Decrement
 	LEX->DOCUMENT_POSITION before returning when HTML `<' was
 	unterminated.  Otherwise we get errors when we catch the inifite
 	loop.

	* barrel.c (bow_barrel_prune_words_not_in_map): Hide words instead
 	of removing them.
	(bow_barrel_keep_top_words_by_infogain): Set BOW_WORD2INT_DO_NOT_ADD
	so that lexing doesn't add more words to the vocabulary.  This
 	fixes a bug in which new words in queries were causing the total
 	count of the number of words in a query document to be too high
 	during leave-one-out evaluation.
	(bow_barrel_printf_old1): Renamed from bow_barrel_printf.
	(bow_barrel_printf): New function that can print in different
	formats.

Tue Nov 25 11:10:12 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel): New element LAMBDA_G1PARENT.
	(hier_barrel_new): Initialize it to zero.
	(hier_barrel_add_stats): Initialize CDOC->CLASS_PROBS to NULL.
	(hier_barrel_add_document): Likewise.
	(hier_barrel_set_lambda_from_delta): Initialize LAMBDA_G1PARENT to 0.
	(HIER_BARREL_PARENT): New macro.
	(HIER_BARREL_G1PARENT): New macro.
	(hier_barrel_prob_wi_in_ci_shrink): Use LAMBDA_G1PARENT, get only
	local probs from each of them, and mix them.
	(hier_barrel_prob_wi_shrink): Likewise.
	(hier_barrel_calc_lambda_one_iteration): Use LAMBDA_G1PARENT.  Get
	only local probs from each of them, and mix them.
	(rainbowh_options): New option "print-barrel".
	(rainbowh_parse_opt): Handle it.
	(hier_barrel_print_barrel): New function.
	(main) Call it.

Mon Nov 24 16:36:55 1997  Andrew McCallum  <mccallum@jprc.com>

	* lex-simple.c (bow_lexer_simple_get_raw_word): Decrement
 	LEX->DOCUMENT_POSITION before assert().  Otherwise files that end
	without a newline seem to cause crashes.

	* rainbow.c (BASENAME): Removed macro.
	(rainbow_index): Use filename_to_classname() instead of BASENAME.

Mon Nov 24 12:57:52 1997  Kamal Nigam  <knigam@cs.cmu.edu>

	* em.c, bow/em.h: New files!
	* Makefile.in (LIBBOW_H_FILES): Added em.h.
	(METHOD_C_FILES): Added em.c.
	* vpc.c (bow_barrel_new_vpc): Initialize CLASS_PROBS to NULL.
	* split.c (bow_test_split2): New function.
	(bow_ignore_next_wv): New function.
	(bow_ignored_model_next_wv): New function.
	* rainbow.c (rainbow_class_barrel): Initialize to NULL.
	* bow/libbow.h: #include <bow/em.h>.  Declare new functions.
	(bow_cdoc): Add element CLASS_PROBS.
	* barrel.c (_bow_barrel_cdoc_free): Free CLASS_PROBS if non-NULL.
	(bow_barrel_add_from_text_dir): Initialize CLASS_PROBS to NULL.
	(_bow_barrel_cdoc_read): Likewise.

Mon Nov 24 08:45:29 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (*_KEY): Changed from #define's to enum.
	(struct rainbowh_arg_state): New member shinkage_method.
	(rainbowh_options): New option "shrinkage-method".
	(rainbowh_parse_opt): Implement it.
	(hier_barrel): New elements LAMBDA and LAMBDA_UNIFORM.
	(CI_IN_PARENT_ROOT): Macro deleted.
	(hier_barrel_new): Initialize LAMBDA and LAMBDA_UNIFORM.
	(hier_barrel_prune_words_not_in_map_and_set_vpc): Initialize
	DOC_BARREL->CLASSNAMES.
	(hier_barrel_set_local_class_model): Likewise.
	(hier_dir_is_leaf): New code, but commented out with AUTO_LEAF_DETECT.
	(_hier_barrel_new_from_text_dir_recurse): Rather than exiting with
	error if the directory was found to be empty of subdirectories,
 	instead call _hier_barrel_new_from_text_dir_leaf().  This means
 	that you don't have to create "rainbow-hier-leaf" files in the
 	directories at the leaf of the data directory.
	(hier_barrel_prob_wi_in_ci_wittenbell): Change LOO_CLASS from int to
	char*.
	(hier_barrel_prob_wi_in_ci): Likewise.
	(hier_barrel_score): Likewise.
	(hier_barrel_set_lambda_from_delta): New function.
	(hier_barrel_set_children_lambda_from_delta): New function.
	(hier_barrel_calc_delta): Once DELTA is determined, set LAMBDA's to
	match.
	(hier_barrel_calc_delta_recurse): Set LAMBDA of HBARREL root here.
	(last_pr_w_c): Global variable removed.
	(old_hier_barrel_prob_wi_in_ci_shrink): Renamed from
	hier_barrel_prob_wi_in_ci_shrink().
	(LOO_CLASS_IN_PARENT): Macro deleted.
	(LOO_CLASS_MATCH): New macro.
	(hier_barrel_prob_wi_in_ci_local): New function.
	(hier_barrel_prob_wi_in_ci_shrink): New function.
	(hier_barrel_prob_wi_local): New function.
	(hier_barrel_prob_wi_shrink): New function.
	(hier_barrel_calc_lambda_one_iteration): New function.
	(hier_barrel_calc_lambda): New function.
	(hier_barrel_calc_lambdas): New function.
	(check_prob_wi_in_ci): Don't immediately return; actually do the check.
	(_hier_barrel_local_score): Some minor clean-ups, and make it do KL
	instead of log-naivebayes, by dividing by document length.
	(_hier_barrel_set_node_scores): Change condition for doing local
	scoring so that if HIER_LEAF, we don't bother evaluating interior
 	nodes of the tree.  Remove some OVERRIDE_LOG_PROBS-commented-out
 	code.  Only call self recursively on HBARREL's with children.
	(hier_barrel_print_loo_accuracy): Don't evaluate from root of tree.
	Perhaps this should be changed back?
	(hier_barrel_print_loo_accuracy_vary_delta): Start at delta/1024
	instead of delta/1000.  Save the best delta, and set lambda from
 	it.
	(hier_barrel_test): Deal with NULL TEST_FILES_FILENAME.  Attend to
	SHRINKAGE_METHOD and do whichever was indicated on command-line.
	(rainbowh_archive): Write format version to file.
	(rainbowh_unarchive): Read it.
	(main): Initialize shrinkage method to em.  Don't
	check_prob_wi_in_ci() here because the LAMBDA's aren't ready.

Sun Nov 23 18:47:50 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow.c (BASENAME): New macro.
	(rainbow_index): Use it to initialize BARREL->CLASSNAMES with correct
	classnames!

	* rainbow.c (rainbow_test): Don't free the heap.  It was already
 	done automatically.
	(main): Likewise.

	* heap.c (bow_dv_heap_free): Add comment.

	* bow/libbow.h (ABS) New macro.

Mon Nov 17 10:09:20 1997  Andrew McCallum  <mccallum@jprc.com>

	* bow/libbow.h: Include <bow/knn.h>.
	(bow_barrel_add_classname): New macro.

	* Makefile.in (LIBBOW_C_FILES): Remove deflexer.c.
	(METHOD_C_FILES): Add deflexer.c, because it also has a constructor
	function that may not get linked in otherwise.

	* Makefile.local (rainbow-h): Add METHOD_O_FILES.

	* rainbow-h.c (hier_barrel_prune_words_not_in_map_and_set_vpc):
 	Free and reinitialize HBARREL->DOC_BARREL->CLASSNAMES, instead of
 	building a local array to be passed to the VPC function.
	(hier_barrel_set_local_class_model): Likewise.
	(hier_barrel_select_test): Function deleted.
	(hier_barrel_free): Don't free the hash; it's been deleted.
	(hier_barrel_set_vpc_with_weights): Comment out unused function.

	* rainbow-h.c: Remove old functions by Andrew Ng that are no
	longer used.
	(fix_up_node): Function deleted.
	(classify_from_rankings_helper: Likewise.
	(classify_from_rankings): Likewise.
	(hier_recursive_reping_document): Likewise.
	(new_bow_di_to_wv): Likewise.
	(hier_recursive_set_rankings): Likewise.
	(classify_single_doc): Likewise.
	(set_true_class): Likewise.
	(hier_recursive_reping_all_documents): Likewise.
	(new_hash_ele_t): Likewise.
	(free_hash_ele_t): Likewise.
	(hashit): Likewise.
	(create_hash): Likewise.
	(find_di_from_fn): Likewise.
	(find_child_di): Likewise.
	(find_di): Likewise.
	(free_hash): Likewise.
	(hier_barrel_single_pass_set_vpc_with_weights): Likewise.
	(classify_document): Likewise.
	(is_descendant_of): Likewise.
	(set_niece_pointer): Likewise.
	(fix_up_is_niece_field): Likewise.
	(fix_up_niece_pointers): Likewise.
	(init_ignore_structure): Likewise.
	(set_all_model): Likewise.

	* rainbow.c (rainbow_classnames): Deleted global variable.
	(rainbow_unarchive): Remove code for initializing RAINBOW_CLASSNAMES.
	(main): New local variable RAINBOW_CLASSNAMES.

	* vpc.c (bow_barrel_new_vpc): Drop CLASSNAMES and NUM_CLASSES
 	arguments.  Get that information from DOC_BARREL->CLASSNAMES
 	instead.
	(bow_barrel_new_vpc_merge_then_weight): Drop last two args.
	(bow_barrel_new_vpc_weight_then_merge): Likewise.
	* rainbow.c (rainbow_index): Drop last two arguments to vpc
 	function.
	(rainbow_query): Likewise.
	(rainbow_lisp_setup): Likewise.
	(rainbow_test): Likewise.
	(rainbow_test_files): Likewise.
	(main): Likewise.
	* rainbow-h.c (hier_barrel_set_vpc_with_weights): Drop last two
 	arguments to vpc function.
	(hier_barrel_set_local_class_model): Likewise.
	(hier_barrel_set_vpc_with_weights): Likewise.
	* knn.c (bow_knn_classification_barrel): Drop last two arguments.
	* bow/libbow.h (bow_method): VPC_WITH_WEIGHTS no longer takes
 	CLASSNAMES and NUM_CLASSES arguments.
	(bow_barrel_new_vpc_with_weights): Likewise.
	(bow_barrel_new_vpc): Likewise.
	(bow_barrel_new_vpc_merge_then_weight): Likewise.
	(bow_barrel_new_vpc_weight_then_merge): Likewise.

	* Makefile.in (clean): Remove PERL_RUNNABLE_FILES.

	The following changes mostly added with Sean Slattery.
	Add KNN method.  Add CLASSNAMES element to barrel structure, and
	use it to get classnames and the number of classes, rather than
	using the BARREL->CDOCS->LENGTH from the class barrel.

	* knn.c, bow/knn.h: New files that implement k-NN classification
	based on TFIDF weights and cosine-similarity.
	
	* bow/libbow.h (bow_barrel): Add new element CLASSNAMES.  It's a
 	str4int map between classnames and their indices.
	(bow_method): Add new element FREE_BARREL.  A function to call to free
	the barrel.
	(bow_free_barrel): New macro.
	(bow_barrel_num_classes): New macro.
	(bow_barrel_classname_at_index): New macro.
	(bow_barrel_add_from_text_dir): Declare type-change in last argument.
	(BOW_DEFAULT_FILE_FORMAT_VERSION): Bumped from 5 to 6.  Barrel's now
	write out their new CLASSNAMES map.
	* kl.c (bow_method_kl): Add new element bow_barrel_free().

	* Makefile.in (LIBBOW_C_FILES): Remove the .c files that implement
 	methods.
	(METHOD_C_FILES): Put them in this new variable.
	(METHOD_O_FILES): New variable.
	($(DEMO_EXECUTABLES)): Depend on METHOD_O_FILES and explicitly link
	them in.  Previously we just depending on linking them from the
 	library, but the executables didn't require any symbols from the
 	method files, so they would get linked in unless we added a kludgy
 	function call that required them.

	* barrel.c (bow_barrel_new): Initialize CLASSNAMES to NULL.
	(bow_barrel_add_document): Assert that CLASSNAMES is NULL, as a check
	to make sure that bow_barrel_add_from_text_dir wasn't used on the
 	barrel's in rainbow-h.
	(bow_barrel_add_from_text_dir): Change type of class argument: instead
	of specifying which class by integer index, specify by char*
 	classname.  Initialize the CLASSNAMES map if it hasn't been
 	already.
	(bow_barrel_new_from_data_fp): Read CLASSNAMES.
	(bow_barrel_write): Write CLASSNAMES.
	(bow_barrel_free): Free CLASSNAMES.

	* vpc.c (bow_barrel_new_vpc): Create and initialize CLASSNAMES new
 	element in VPC_BARREL.  Use BARREL_NUM_CLASSES to determine size
 	of VPC_BARREL, not the number of documents in the DOC_BARREL!

	* wi2dvf.c (bow_wi2dvf_new_from_data_fp): Add comment about this
 	not reading all the data.

	* prind.c (bow_method_prind): Add new element bow_barrel_free().
	* tfidf.c (bow_method_tfidf): Likewise.
	* naivebayes.c (bow_method_naivebayes): Likewise.

	* rainbow.c: Use bow_free_barrel() instead of bow_barrel_free().
  	Use bow_barrel_num_classes() instead of looking at the length of
 	cdocs.
	(rainbow_options): Say what the default is for "test-percentage".
	(rainbow_index): Use new last arg to bow_barrel_add_from_text_dir().
	(rainbow_test): Use bow_barrel_classname_at_index() instead of
	filename_to_classname().
	(main): Don't manually register methods kl and evi.  The proper .o's
	now get explicitly linked in by the Makefile.

	* robin.c (robin_index): Use new last argument for
 	bow_barrel_add_from_text_dir().

	* arrow.c (arrow_index): Use new last arg to
 	bow_barrel_add_from_text_dir().

	* rainbow-h.c: Use the macro bow_free_barrel() instead of
 	bow_barrel_free().
	(hier_barrel_print_loo_accuracy): New function.
	(hier_barrel_print_loo_accuracy_vary_delta): New function.
	(hier_barrel_print_loo_accuracy_vary_delta_recurse): New function.
	(hier_barrel_test): As a temporary test, instead of printing test
	results, just print varying delta LOO results and return.
	(rainbowh_hbarrel): Global variable moved up.
	(hier_barrel_new_from_text_dir): Use new last argument to
	bow_barrel_add_from_text_dir().
	(hier_barrel_prob_wi_in_ci_wittenbell): Add new arguments for LOO.
	(hier_barrel_prob_wi_in_ci_shrink): Likewise.  Use new arguments to
	implement LOO classification.
	(hier_barrel_prob_wi_in_ci): Add new arguments for LOO.
	(check_prob_wi_in_ci): Call above function with new arguments for LOO.
	(_hier_barrel_local_score): Likewise.
	(PRINT_TREE_SCORES):  Change macro value from 1 to 0.
	(_hier_barrel_set_node_scores): Add new argument for LOO.  Call
	bow_barrel_score() with LOO argument.
	(hier_barrel_print_scores): Call above function with new args for LOO.
	(hier_barrel_score): Likewise, and add new args for LOO.
	(hier_barrel_test): Call hier_barrel_score() with LOO argument.

Wed Nov  5 13:47:44 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (rainbowh_options): Rename "test-files" to
 	"testing-files" to avoid naming conflict.
	* rainbow.c (rainbow_options): Likewise.

Thu Oct 30 11:04:54 1997  Andrew McCallum  <mccallum@jprc.com>

	* rainbow-h.c (hier_barrel_test): Write the infogain-chosen
 	vocabulary in the local directory, named something like
 	"infogain2-hV00200" according to the the random seed and the
 	vocabulary size.

	* rainbow-h.c (hier_barrel_prob_wi_in_ci_shrink): Change the #elif
 	to do the "Witten-Bell"-like weighting between parent and child
 	instead of the "Method of Moments"-style weighting.
	(hier_barrel_test): Put two newlines at the beginning of the file so
	that even if we are lexing with --skip-headers, we'll still get
 	the words in the file.

Tue Oct 28 13:50:35 1997  Andrew McCallum  <mccallum@jprc.com>

	* arrow.c (arrow_query): Complain with message if the query vector
 	is emtpy.

	* barrel.c (bow_barrel_add_from_text_dir): Fill in the WORD_COUNT
 	entry in the created CDOC's.
	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): Make it return the number
 	of words in the document, instead of void.
	* bow/libbow.h (bow_wi2dvf_add_di_text_fp): Now returns int
 	instead of void.

Thu Oct 16 09:58:14 1997  Andrew McCallum  <mccallum@jprc.com>

	Following changes actually made in September:

	* rainbow-h.c (USE_VOCAB_SIZE_KEY): New macro.
	(TEST_FILES_KEY): Likewise.
	(rainbowh_options): New options "use-vocab-size" and "test-files".
	(struct rainbowh_arg_state): New members VOCAB_SIZE and
	TEST_FILES_FILENAME.
	(rainbowh_parse_opt): Handle new options.
	(hier_barrel): New member DELTA.
	(hier_barrel_prune_words_not_in_map_and_set_vpc): New function.
	(hier_barrel_set_local_class_model): Uncomment code to free the class
	barrel before re-creating it.
	(rainbowh_total_unique_words): New global variable.
	(hier_barrel_prob_wi_in_ci_wittenbell): New function.
	(hier_barrel_calc_delta): New function.
	(hier_barrel_calc_delta_recurse): New function.
	(hier_barrel_prob_wi_in_ci_shrink): New function taken from
	hier_barrel_prob_wi_in_ci().  Implement Wasserman's "Method of
 	Moments".
	(hier_barrel_prob_wi_in_ci): New function that calls one of above two.
	(_hier_barrel_local_score): Find the root and total number of words.
	Initialize SCORES[] to log of prior class prob.  Handle case where
 	there is not training data for a class.  If DV is NULL, deal with
 	skipping the word sometimes, but not always, depending on the
 	right case.  When incrementing score for each word, deal with
 	classes that have no training data.  Remove code for
 	!OVERRIDE_LOG_PROBS.  When putting scores into return array, deal
 	with classes that have no training data.
	(_hier_barrel_set_node_scores): Set the local score or not depending
	on HIER_LEAF mode.
	(hier_barrel_print_infogain): Function moved up in file.  New first
	argument FILE*.
	(hier_barrel_test): Deal with TEST_FILES_FILENAME and VOCAB_MAP, etc.
	(main): Initialize VOCAB_SIZE to zero.  Register the KL method.  Call
	hier_barrel_print_infogain() with new argument.  Remove
 	"compile-command" local emacs variable.

	* vpc.c (bow_barrel_new_vpc): Deal with situations where there is
 	no training data for a class.  Instead of asserting MAX_CI > 0,
 	print a warning instead.  Loop over NUM_CLASSES instead of relying
 	on MAX_CI.  Allow the class prior prob to be equal to 0.0 or 1.0.

	* split.c (bow_test_set_files): New function.

	* opts.c (bow_options): Rearrange some options.

	* kl.c (bow_kl_score): When setting class prior prob, handle case
 	in which there was no training data for this class.  Also handle
 	this case when adding contribution of a WI for each class, and
 	when doing WITTEN_BELL, and when normalizing score.

	* int4str.c (bow_int4str_new_from_string_file): New function.

	* bow/libbow.h: Declare new functions.

	* Makefile.local (rainbow-h): Use $(CC) instead of gcc.

	* rainbow.c (TEST_FILES_KEY): New macro.
	(PRINT_DOC_NAMES_KEY): Likewise.
	(rainbow_options): New options "test-files" and "print-doc-names".
	(rainbow_parse_opt): Handle them.
	(filename_to_classname): Comment out early return of filename.  That
	is, revert to old behavior.
	(rainbow_test): If TEST_FILES_FILENAME is non-NULL use it instead of
	randomly setting which documents are for training and which are
 	for testing.
	(main): Initialize TEST_FILES_FILENAME to NULL.  Handle
	RAINBOW_DOC_NAME_PRINTING.

Thu Sep 25 17:35:01 1997  Andrew McCallum  <mccallum@@jprc.com>

	This version given to Rob Shapire and others at AT&T Research.

	* Makefile.in (LIBBOW_H_FILES): Added bow/kl.h.

Wed Sep 17 14:51:33 1997  Karl Kleinpaste  <karl@@jprc.com>

	* rainbow-h.c (top): Add socket #includes.
	(rainbowh_options): Add --query-server and -n options.  Also,
 	remove #define of PRINT_TREE_SCORES, in favor of runtime -n.
  	(rainbowh_arg_state): Add rainbowh_query_serving to what_doing,
 	plus server_port_num, for --query-server, and print_tree_scores,
	for -n.
  	(rainbowh_parse_opt): Add --query-server and -n detection.
  	(_hier_barrel_set_node_scores): Properly conditionalize tree score
 	printing.
	(hier_barrel_print_scores_recurse): Add FILE *out.
  	(hier_barrel_print_scores): Add FILE *out.
	(rainbowh_query): New routine, stripped from the mainline `if'.
  	(rainbowh_socket_init): Add for --query-server capability.
  	(rainbowh_serve): Add for --query-server capability.
	(main): Init print_tree_scores; init lexer end pattern; insert
 	conditional call to service --query-server; slice out mainline for
 	rainbowh_query().

Wed Sep 17 14:22:18 1997  Andrew McCallum  <mccallum@@jprc.com>

	* split.c (bow_test_split): Remove the assertion that we use at
 	least 90% of the documents as training data.

Tue Sep  9 10:55:31 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: Change default method from prind to naivebayes.
	(_hier_barrel_cdoc_write): Handle bow_file_format_version 5.
	(_hier_barrel_cdoc_read): Likewise.
	(hier_barrel_set_local_class_model): Call vpc function with new
	argument.
	(hier_barrel_set_vpc_with_weights): Likewise.
	(hier_barrel_add_document): Set HBARREL->DOC_BARREL->METHOD to
	HIER_DEFAULT_METHOD.
	(hier_barrel_set_vpc_and_populate_lower_branches): Only recursively
	set vpc in children branches if there are documents there.
	(hier_barrel_prob_wi_in_ci): Assert that the CDOC->NORMALIZER has been
	set.  Set M_EST_M according to CDOC->NORMALIZER, which is number
 	of unique words.
	(_hier_barrel_local_score): Clean up a little.
	(main): Call hier_set_method() if BOW_ARGP_METHOD.

Sat Aug 30 19:03:17 1997  Andrew McCallum  <mccallum@@jprc.com>

	* kl.c (bow_kl_score): Initialize scores to class prior divided by
 	query document length, not just class prior.  This way our
 	classifications match Naive Bayes, as they should.

Fri Aug 29 09:12:05 1997  Andrew McCallum  <mccallum@@jprc.com>

	* barrel.c (bow_barrel_add_from_text_dir): Add newline before
 	warning about a file being skipped because it is not text.

	Before the following change we were overflowing DV->ENTRY[i].DI in
 	document barrel's when there were more than 32767 documents.
  	Karl's Yahoo experiments were trying to build models with about
 	60000 documents.  We would get an error in vpc.c at the assertion
 	that "ci < num_classes".
	* dv.c (bow_dv_add_di_count_weight): Warn if we overflow int,
 	not short.
	(bow_dv_write_size): Adjust for change of COUNT and DI from
	short to int.
	(bow_dv_write): Likewise.
	(bow_dv_new_from_data_fp): Likewise.
	* bow/libbow.h (bow_cdoc): Change member CLASS from short to int.
	(bow_de): Change members DI and COUNT from short to int.
	* barrel.c (_bow_barrel_cdoc_write): If BOW_FILE_FORMAT_VERSION is
 	5 or greater, change CDOC->CLASS from short to int.
	(_bow_barrel_cdoc_read): Likewise.
	* bow/libbow.h (BOW_DEFAULT_FILE_FORMAT_VERSION): Changed from 4 to 5.
	* io.c: Add comment about bow_file_format_version history.

Thu Aug 28 22:36:55 1997  Andrew McCallum  <mccallum@@jprc.com>

	* kl.c (bow_kl_score): Add class prior probabilities.

	* lex-simple.c (bow_lexer_simple_get_raw_word): When we find the
 	NULL at the end of the document, and before we find the beginning
 	of a word, back up DOCUMENT_POSITION (even though will return 0
 	this time already).  Add some assertions about DOCUMENT_POSITION.

	* lex-html.c (bow_lexer_html_get_raw_word): When we find the NULL
 	at the end of the document, back up DOCUMENT_POSITION so we will
 	return 0 next time we are called.  Add some assertions about
 	DOCUMENT_LENGTH.

Wed Aug 27 11:23:34 1997  Andrew McCallum  <mccallum@@jprc.com>

	* bow/libbow.h: Include <unistd.h>.

	* rainbow.c (rainbow_parse_opt): Fix typo.

	* rainbow.c (rainbow_parse_opt) [SERVER_KEY]: Set
 	DOCUMENT_END_PATTERN to a single dot on a line.
	(main): Don't set DOCUMENT_END_PATTERN here for server mode.

	* lex-simple.c (bow_lexer_simple_open_text_fp): Explicitly seek
 	the PRE_PIPE_FP to the end of the file!  Otherwise, we can
 	sometimes read the same file over and over again in the many
 	`while(open_text_fp())' loops throughout the library.

	* rainbow.c (rainbow_print_weight_vector): Change the test for
 	deciding when we need to multiply by CDOC->NORMALIZER before
 	printing the weight. Instead of looking specifically for
 	"naivebayes", look for a METHOD->NORMALIZE_WEIGHTS function
 	pointer that is NULL.  Now this works properly for the "kl" method
 	too.

	* kl.c (bow_kl_set_weights): Calculate the total number of
 	occurrences of each word; store this in DV->IDF.  The the DV
 	weights to the weighted log odds ratio P(w|C)*log(P(w|C)/P(w|~C)).

	* rainbow.c (rainbow_lisp_setup): Update for new default
 	arguments.
	(rainbow_lisp_query): Add LOO_CV argument to bow_barrel_score().

	* kl.c (bow_kl_score): Move declaration of SCORES_SUM.

Tue Aug 26 11:12:00 1997  Andrew McCallum  <mccallum@@jprc.com>

	* vpc.c (bow_barrel_set_vpc_priors_by_counting): Add assertion
 	about the PRIOR.

Mon Aug 25 14:03:58 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-ac.pl: As a diagnostic, print the number of predictions
 	found in the file.

	* naivebayes.c (bow_naivebayes_set_weights): Set CDOC->NORMALIZER
 	to the number of unique terms in each class.  (This is now used by
 	rainbow-h.)

	* kl.c (bow_kl_set_weights): Add assertion about CDOC->NORMALIZER.

	* foilgain.c (bow_foilgain_ci_per_wi_new): New function.

	* bow/libbow.h (bow_default_method_name): New macro.
	* barrel.c (bow_barrel_new): Use new macro
 	`bow_default_method_name' instead of "naivebayes".

Tue Aug 19 09:50:16 1997  Andrew McCallum  <mccallum@@jprc.com>

	* int4word.c (bow_words_set_map): Be sure to initialize the
 	map/counts if they haven't been initialized yet.  Otherwise,
 	WORD_MAP_COUNTS will point nowhere an we can tromp on memory.  I
 	was getting malloc() errors before this was fixed.
	(bow_words_keep_top_by_infogain): Change so that word indices are
	ordered by information gain, even when NUM_WORDS_TO_KEEP is less
 	than the number of words returned by bow_infogain_per_wi_new().

	* wi2dvf.c (bow_wi2dvf_entry_at_wi_di): New function.
	* dv.c (bow_dv_entry_at_di): New function.
	* bow/libbow.h: Declare new functions.

	* barrel.c (bow_barrel_add_from_text_dir): Add verbosity when a
 	file is skipped because istext() fails.
	(bow_new_slow_barrel_printf): New function.

	* vpc.c (bow_barrel_new_vpc): New argument, NUM_CLASSES.  Use it
 	to initialize an array that is filled with counts of the number of
 	documents per class.  Initialize CDOC->NUM_WORDS to be the number
 	of documents per class.  This can then be used in "event=document"
 	models.
	(bow_barrel_new_vpc_merge_then_weight): New argument, NUM_CLASSES.
	(bow_barrel_new_vpc_weight_then_merge): Likewise.

	* rainbow.c (rainbow_index): Use macro
 	bow_barrel_new_vpc_with_weights(), with new `num_classes'
 	argument.
	(rainbow_query): Likewise.
	(rainbow_test): Likewise.
	(main): Likewise.
	(rainbow_test_files): Likewise.  If QUERY_WV is NULL, verbosify a
	warning.

	* bow/libbow.h (bow_method): Add NUM_CLASSES argument to
 	VPC_WITH_WEIGHTS.
	(bow_barrel_new_vpc_with_weights): Add NUM_CLASSES argument.
	(bow_barrel_new_vpc): Likewise.
	(bow_barrel_new_vpc_merge_then_weight): Likewise.
	(bow_barrel_new_vpc_weight_then_merge): Likewise.

	* bow/naivebayes.h (bow_params_naivebayes): Remove
 	SCORE_WITH_LOG_PROBABILITIES.

	* kl.c (bow_kl_score): Reformat error message.

	* naivebayes.c (bow_naivebayes_set_weights): Only set
 	CDOC->WORD_COUNT if not doing BOW_BINARY_WORD_COUNTS, otherwise
 	leave them as the "document counts" as they were initialized in
 	vpc.c.

Thu Aug 14 11:46:46 1997  Andrew McCallum  <mccallum@@jprc.com>

	* naivebayes.c: Remove all references and code for
 	SCORE_WITH_LOG_PROBABILITIES.  Use KL method instead.
	(bow_method_crossentropy): Removed, and all related structures and
	functions.
	* opts.c (bow_options): Remove "naivebayes-score-with-log-probs"
 	option.
	(parse_bow_opt): Don't handle it anymore.

	* naivebayes.c: Add a naivebayes-specific command-line option by
 	using "argp child".
	(naivebayes_argp_m_est_m): New static variable.
	(naivebayes_options): New argp structure.  New command-line option
	"naivebayes-m-est-m".
	(naivebayes_parse_opt): New function.
	(naivebayes_argp: New structure.
	(naivebayes_argp_child): New structure.
	(_register_method_naivebayes): Add the argp child.
	(bow_naivebayes_score): Comment out assertion that (loo_class == -1)
	because it trips up rainbow-h.

	These changes were made a while ago.
	* rainbow-h.c (hier_recursive_set_rankings): Pass new LOO argument
 	to bow_barrel_score.
	(classify_single_doc): Likewise.
	(hier_barrel_set_vpc_and_populate_lower_branches): Likewise.
	(hier_barrel_prob_wi_in_ci): Add two new pass-by-ref arguments that
	return certain counts.  Pass new arguments.
	(check_prob_wi_in_ci): Pass new arguments.
	(_hier_barrel_local_score): Call above function with new arguments,
	and print them out.
	(main): Switch back to using POPULATE_BY_SCORING and HIER_NIECE
	options by default.

Wed Aug 13 16:44:07 1997  Andrew McCallum  <mccallum@@jprc.com>

	* lex-simple.c (bow_lexer_simple_open_text_fp): Print error
 	message if popen() call failed.

	* opts.c (bow_argp_add_child): Change asssertion.  Add call to
 	memset(), which should be unnecessary.

	Before this code was added, some inlinks WebKB files were being
	declared as "nontext" and skipped because many lines had the same
	length.
	
	* istext.c (bow_fp_is_text): Pay attention to
 	BOW_ISTEXT_AVOID_UUENCODE.
	* opts.c (bow_istext_avoid_uuencode): Declare new global variable.
	(bow_options): New option "istext-avoid-uuencode".
	(parse_bow_opt): Handle it.
	* bow/libbow.h (bow_istext_avoid_uuencode): New global variable
 	set by command-line option.
	(bow_lex_pipe_command): Make it extern!

	* kl.c (bow_kl_score): Give more detailed error message for LOO
 	negative probabilities.

	Before this code was added, some WebKB files were being skipped
	because the non-MIME-header part was already buffered in STDIO.

	* lex-simple.c (bow_lexer_simple_open_text_fp): When using
 	BOW_LEX_PIPE_COMMAND, make sure that the file descriptor file
 	position matches the stdio FP position, otherwise we can get a
 	premature EOF because the stdio has already read much of the file
 	for buffering.

Mon Aug 11 11:51:11 1997  Andrew McCallum  <mccallum@@jprc.com>

	* info_gain.c (bow_infogain_per_wi_print): If NUM_TO_PRINT is 0,
 	then print infogain of all words, not zero words.

	* bow/libbow.h (bow_model_next_wv): Declare new split function.

Mon Jul 14 11:09:04 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-stats.pl (overall_accuracy): Shorten the label before
 	the numbers.

	* istext.c (bow_fp_is_text): Initialize
 	MAX_LINE_LENGTH_HISTOGRAM_LENGTH to avoid warning.

	* istext.c (bow_fp_is_text): Re-enable the uuencode-block
 	detection.  Now, in order to reject the file, insist that the
 	length of the lines with the most common length be greater than
 	or equal to 50.  Hopefully this will not falsely reject HTML files
	as it did before.

Tue Jul  1 08:39:25 1997  Andrew McCallum  <mccallum@@jprc.com>

	* kl.c (bow_kl_score): Remove assertion that SCORE_INCREMENT be
 	non-zero.  It can be zero when PR_W_C == PR_W_D, then
 	LOG(PR_W_C/PR_W_D) will be zero, and SCORE_INCREMENT will be zero.

Mon Jun 30 17:41:06 1997  Karl Kleinpaste  <karl@@jprc.com>

	* rainbow.c (rainbow_serve): Added.
	(rainbow_socket_init): Added.
  	(rainbow_parse_opt): Added SERVER_KEY case.
	(rainbow_query): Modified FILE * handling for use of other than
	stdin/stdout.
  	(main): Added query-server handling.

Sat Jun 28 12:22:30 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (rainbow_test_files): Temporarilty comment out code
 	that removes some of the training documents from training until we
 	add a scheme that really makes the default test percentage 0.
	(main): Put the call of rainbow_test_files after doing things
	necessary to update the class/word weights for the command-line
 	options.  Temporarily, ALWAYS rebuild the VPC model, even if non
 	of the parameters change because the weights read from disk were
 	bad; find out why eventually!

	* prind.c (bow_prind_score): When BOW_PRINT_WORD_SCORES, also
 	print PR_W_C.

	* prind.c (bow_prind_score): When all pre-normalized scores are
 	zero, set normalized scores to -1.0/#classes, don't leave them as
 	zero.  [Perhaps we should set the scores to the class priors?
  	Althought this does not fall our of the PrInd derivation.]

	* kl.c (bow_kl_score): When all pre-normalized scores are zero,
 	set normalized scores to -1.0/#classes, not -9999.

	* arrow.c (arrow_query): Pass LOO_CV argument to score.

Thu Jun 26 14:48:28 1997  Andrew McCallum  <mccallum@@jprc.com>

	* lex-simple.c (bow_lexer_simple_open_text_fp): Attend to
 	BOW_LEX_PIPE_COMMAND and implement it.
	* opts.c (bow_lex_pipe_command): New global variable.
	(bow_options): New command-line option "lex-pipe-command".
	(parse_bow_opt): Handle it.
	* bow/libbow.h: Declare new global variable.

	* istext.c (bow_fp_is_text): Move local variables to avoid GCC
 	warning.

	--test-files-loo should now work.
	* prind.c: Convert scoring function to take LOO_CLASS arguement.
	* kl.c: Likewise.
	* naivebayes.c: Likewise.
	* tfidf.c: Likewise.
	* evi.c: Likewise.
	* rainbow.c: Call scoring function with LOO_CLASS argument.

	* bow/libbow.h (bow_barrel_score): Add extra LOO_CLASS argument.
	(bow_method): Likewise to (*score) member.

	* rainbow-ac.pl: Make sure last confidence number gets printed
 	properly.  Before it was always just zero.

	* rainbow.c (rainbow_options): Added "test-files-loo" for
 	Leave-One-Out testing.  Not implemented yet, however.
	(struct rainbow_arg_state): New member LOO_CV.
	(rainbow_query): Do proper checks before using lisp score truncation.
	(rainbow_test): Likewise.  Also, add (commented out) code to print
	more stats.
	(main): Call _register_method_evi() to make sure it gets linked in.

	* Makefile.in (LIBBOW_C_FILES): Added evi.c.
	* evi.c: New file.

	* naivebayes.c (bow_naivebayes_set_weights): Add checks that make
 	sure that Sum_w Pr(w|c) is 1 for all classes.

	* kl.c (bow_kl_score_loo): Implement normalized KL scores, with
 	Witten-Bell discounting.  (NOTE: NaiveBayes does not yet have
	Witten-Bell implemeted.  Thus the accuracy of Witten-Bell can be
	easily compared with Laplace by comparing "kl" with "naivebayes".)

	* rainbow-stats.pl (confusion): Initialize $MAX_CLASSNAME_LENGTH
 	to the length of "classname", so that we still get proper
 	formatting with very short classnames.

	* istext.c (bow_fp_is_text): Temporarily comment out the code that
 	tries to avoid files with uuencoded blocks, because the current
 	scheme also seems to avoid many HTML files.  (Reported by Sean
 	Slattery.)  Warning, trying to index the 20_newsgroups data in
 	this state will give bad results.

Mon Jun 23 11:59:50 1997  Andrew McCallum  <mccallum@@jprc.com>

	* prind.c (bow_prind_score): Comment fixes.  Describe the
 	smoothing situation accurately.

	* int4word.c (bow_words_keep_top_by_infogain): Don't try to "keep"
 	more words than are available in the BARREL!  (Bug reported by
 	Daniel A Dipasquo <greenface+@@CMU.EDU>.)  If NUM_WORDS_TO_KEEP is
 	greater than or equal to the number of words in the BARREL, put
 	all these words in the new vocabulary.

Wed Jun 11 16:40:14 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (rainbow_test): Don't do CommonLisp score truncation
 	if the score is negative.  (This change should be made to other
 	score-printing functions too.)
	(main): Gratuitously call _register_method_kl(), so that kl.c gets
	linked in with the rainbow executable.

	* kl.c (_register_method_kl): Make sure we can't register the
 	method twice, even if this function is called twice.

	* naivebayes.c (bow_naivebayes_score_loo): When using uniform
 	class priors, set SCORES[CI] based on log of uniform distribution
 	of classes, not to 1.  When setting log_pr_tf, instead of using
 	pow() before taking the log(), just multiply after using log().

	* Makefile.in (LIBBOW_C_FILES): Added kl.c.

Fri Jun  6 09:48:06 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (NO_LISP_SCORE_TRUNCATION_KEY): New macro.
	(rainbow_options): New option "no-lisp-score-truncation".
	(rainbow_parse_opt): Handle it.
	(struct rainbow_arg_state): New member USE_LISP_SCORE_TRUNCATION.
	(rainbow_query): Obey it.
	(rainbow_test): Likewise.
	(main): Make its default value 1.

Tue Jun  3 10:31:10 1997  Andrew McCallum  <mccallum@@jprc.com>

	* readme.texi: Use BOWVERSION, not BOW_VERSION to match
 	version.texi.

Thu May 29 15:25:06 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Version (BOW_MINOR_VERSION): Version 0.8.
	* bow/libbow.h (BOW_MINOR_VERSION): Version 0.8.

	* docnames.c (bow_map_filenames_from_dir): Remove local variables
 	no longer used.

Mon May 26 12:59:50 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (main): New commented-out code for computing the
 	number of word co-occurrences.

Fri May 23 11:34:05 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (USE_VOCAB_IN_FILE_KEY): New macro.
	(rainbow_options): New option "use-vocab-in-file".
	(rainbow_parse_opt): Handle it.
	(struct rainbow_arg_state): New member VOCAB_MAP.
	(rainbow_query): Use it to remove words from the vocabulary.
	(rainbow_test): Likewise.
	(main): Likewise.

	* rainbow-stats.pl (prune_from_classname): New global variable.  A
 	regular expression to be removed from the end of classnames before
 	gathering stats on them.  This allows us to gather stats on
 	performance in the middle of class hierarchies.
	(read_trial): Use it.

	* int4str.c (bow_int4str_new_from_text_file): Return MAP instead
 	of NULL!

	* barrel.c (bow_barrel_prune_words_not_in_map): Define MAX_WI and
 	use it, so we don't ask for word indices larger than
 	bow_num_words().
	(bow_barrel_print_word_count): Also print word probability according
	to counts.

	* rainbow-h.c (main) [printing_word_counts]: Print word that is
 	being counted.

Wed May 21 15:01:51 1997  Andrew McCallum  <mccallum@@jprc.com>

	* barrel.c (bow_barrel_prune_words_not_in_map): Remove the words
 	instead of hiding them, so that future
 	bow_keep_top_words_by_infogain() calls won't unhide them.

	This version got 46% on hier/yahoo-science (dataset with a 10
	document-per-class threshold).

	* rainbow-h.c (rainbowh_options): Added --use-vocab-in-file
 	command-line option.
	(rainbowh_arg_state): Added PARENT and CI_IN_PARENT.  Added HIER_LEAF.
	Removed printing of leaf- and intermediate-results.
	(hier_barrel_prob_wi_in_ci): New function.
	(check_prob_wi_in_ci): New function.
	(_hier_barrel_local_score): New function.
	(_hier_barrel_set_node_scores): Use it.
	(hier_barrel_print_infogain): Print FULL_NAME with interspersed
	spaces, so it won't get lexed by bow_int4str_new_from_text_file().
	(main): Change defaults.  Before populate_by_scoring=1 and
	hier_structure=hier_niece.  Populate branches first thing, and
 	check prob_wi_ci consistency.

	* naivebayes.c (bow_naivebayes_score_loo): Comment change.

	* int4str.c (bow_int4str_new_from_text_file): New function.

	* bow/libbow.h: Declare new functions.

Tue May 20 16:02:24 1997  Andrew McCallum  <mccallum@@jprc.com>

	* barrel.c (bow_barrel_prune_words_not_in_map): New function.

Mon May 19 09:52:09 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-stats.pl (confusion): Calculate longest classname and
 	use it to fix indentation.

	* wi2dvf.c (bow_wi2dvf_add_di_wv): Set SEEK_START to special flag
 	2.
	(bow_wi2dvf_add_wi_di_count_weight): Likewise.
	(bow_wi2dvf_hide_wi): Decrement WI2DVF->NUM_WORDS in the right place.
	(bow_wi2dvf_unhide_all_wi): Increment WI2DVF->NUM_WORDS.
	(bow_wi2dvf_write): Unhide all words first.
	(bow_wi2dvf_dv): Change assertion to deal with special flag 2.

	* rainbow.c (main): Pass new argument to
 	bow_infogain_per_wi_print().

	* rainbow-h.c: Misc changes.  Print infogain during run.
	(hier_barrel_set_local_class_model): Add IS_ROOT argument.  Unhide
	vocabulary after pruning by infogain, so lower levels get all
 	words.

	* naivebayes.c (M_EST_M): New macro.
	(M_EST_P): New macro.
	(bow_naivebayes_score_loo): Use them to implement M-estimates, instead
	of old Laplace smoothing.

	* info_gain.c (bow_infogain_per_wi_print): Add FP argument.
	* bow/libbow.h: Add argument to infogain function.

	* barrel.c: Fix the math for assigning CDOC->PRIOR, and add
 	assertion checks.

Fri May 16 10:19:19 1997  Andrew McCallum  <mccallum@@jprc.com>

	This was state of code on Thursday night.

	* rainbow-h.c: Add options for changing population scheme and tree
 	structure.  Add ability to output intermediate and leaf results.

	* naivebayes.c (WORD_PRIOR_COUNT): New macro.  Current value 1.0.
	(bow_naivebayes_score_loo): Use it.

Thu May 15 16:22:27 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (rainbow_test): Assert that the ACTUAL_NUM_HITS
 	returned by bow_barrel_score() is the same as the
 	NUM_HITS_TO_RETRIEVE requested.

	* split.c (bow_test_split): Use rand() properly so that the number
 	of test documents in each class are not so biased.  Add special
 	code that *ensures* that the test documents are evenly distributed
 	across classes.

	* rainbow.c (rainbow_print_weight_vector): Don't use
 	CDOC->NORMALIZER if the method is "naivebayes", because NaiveBayes
 	doesn't use it.  Previously the printed values were bogus.

Wed May 14 11:02:44 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: -q RAINBOWH_QUERYING now seems to work.

	* naivebayes.c (bow_naivebayes_score_loo): Add assertion that
 	CDOC->PRIOR is greater than zero.  This restriction should be
 	relaxed!

	* array.c (bow_array_free): Decrement length after testing for
 	non-zero-ness, not before.  Without this change, empty arrays
 	would call free() on un-malloc'ed() memory.

Tue May 13 18:16:31 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: Add code for doing selective population of lower
 	branches.  This population seems to be working.  Querying/scoring
 	does not yet work.

	* wi2dvf.c (bow_wi2dvf_hide_wi): Change assertion to "if" so that
 	we won't crash if we try to hide words that are already hidden.

	* split.c (bow_tmp_word_struct2): New type.
	(bow_model_next_wv): New function.
	(bow_nontest_next_wv): New function.

	* rainbow.c (rainbow_options): Fix documentation for test-files.
	(rainbow_test): Choose vocabulary by info gain *after* the test/train
	split.  Add temporary code to test bow_naivebayes_score_loo().
  	Remove this later!

	* naivebayes.c (bow_naivebayes_score_loo): New function, copy of
 	bow_naivebayes_score_loo, with extra code to do leave-one-out
 	testing if argument LOO is non-negative.
	(bow_naivebayes_score): Call above function with -1 for LOO.
	(bow_method_naivebayes): Change NORMALIZE_WEIGHTS from
	bow_barrel_normalize_weights_by_summing() to NULL.  The
 	normalizing function was not taking account of the Laplace
 	smoothing numbers, and was giving incorrect weights.
	(bow_method_crossentropy): Likewise.

	* istext.c (bow_fp_is_text): Increase NUM_LINE_LENGTHS to
 	NUM_TEST_CHARS to avoid potential crash.

	* docnames.c (bow_map_filenames_from_dir): For directory names and
 	filenames, make it use names of soft links, not the directories
 	that the links point to.

	* barrel.c (bow_barrel_add_document): New function.
	* bow/libbow.h: Declare new function.

	* docnames.c (bow_map_filenames_from_dir): Change commented-out
 	code so that, if uncommented, this function will work if you pass
 	it a filename instead of a directory name.

Tue May  6 15:30:30 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.local (rainbow-h): Make it depend on libbow.a.

	* rainbow-h.c: May 5 changes from Andrew Ng.
	(rainbowh_unarchive): Switch order of unarchiving for vocabulary
	and hier_barrel.
	(hier_barrel_new_from_file): Use bow_barrel_new_from_data_file()
	instead of bow_barrel_new_from_fp(), so we close FILE*'s instead
	of keeping them open.  Otherwise we run out of UNIX's available
	open file descriptor's.

	* wi2dvf.c (FREE_WHEN_HIDING_WI): New macro.
	(bow_wi2dvf_hide_wi): Heed it.
	(bow_wi2dvf_dv): Don't check to make sure that WI is less than
	bow_num_words().  Check SEEK_START before returning a non-NULL DV,
 	because if SEEK_START is less than -1, the DV should be considered
 	`hidden'.

	* opts.c (bow_exclude_filename): New global variable.
	(bow_options): New option "exclude-filename".
	(parse_bow_opt): Handle it.

	* docnames.c (bow_map_filenames_from_dir): Make sure
 	BOW_EXCLUDE_FILENAME is non-NULL before passing it to strcmp().

	* bow/libbow.h (bow_exclude_filename): Declare new global
 	variable.

	* barrel.c (bow_barrel_set_cdoc_priors_to_class_uniform): Use
 	bow_malloc() instead of alloca(), so that bow_realloc() will work.
  	free() it at the end.
	(bow_barrel_new_from_data_file): New function.

Mon May  5 21:08:34 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: Changes by Andrew Ng, before Andrew McCallum's
 	changes to close barrel FP's.

Fri May  2 09:53:12 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: Additions by Andrew Ng to implement cousin scheme.

Wed Apr 30 10:48:30 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.in: Include Makefile.local, avoiding error if it isn't
 	present.

	* barrel.c (bow_barrel_keep_top_words_by_infogain): Unhide and
 	hide the DVF's instead of removing them, so that we can call this
 	function mulitple times with increasing NUM_WORDS_TO_KEEP.

	* wi2dvf.c (bow_wi2dvf_hide_wi): New function.
	(bow_wi2dvf_unhide_all_wi): New function.
	(bow_wi2dvf_dv): Handle new negative values of SEEK_START set by
	BOW_WI2DVF_HIDE_WI().
	* bow/libbow.h: Declare new functions.
	(bow_doc_type): Add ignored_model, for rainbow-h.c.

Thu Apr 24 09:03:10 1997  Andrew McCallum  <mccallum@@jprc.com>

	* vpc.c (bow_barrel_set_vpc_priors_by_counting): Fix crash that
 	occurs if limited vocabulary causes all files in a class to be
 	empty.

	* stoplist.c (bow_stoplist_add_word): New function.

	* rainbow-stats.pl (confusion): Print percentage correct for each
 	category.

	* istext.c (bow_fp_is_text): Also return 0 for files that have
 	more than 30% of their lines of the same length.  This way we
 	avoid files containing uuencoded blocks.

	* bow/libbow.h: Declare new function.

Tue Apr 22 11:19:03 1997  Andrew McCallum  <mccallum@@jprc.com>

	* deflexer.c (bow_default_lexer): Add cast to initialization to
 	avoid warning.

	Add a uniform, global way of keeping track of binary file format
	versions.
	* io.c (bow_file_format_version): New global variable.
	(bow_write_format_version_to_file): New function.
	(bow_read_format_version_from_file): New function.
	* bow/libbow.h (bow_file_format_version): Declare new global
 	variable.
	(BOW_DEFAULT_FILE_FORMAT_VERSION): New macro.
	(bow_write_format_version_to_file): New function declaration.
	(bow_read_format_version_from_file): New function declaration.
	* rainbow.c (FORMAT_VERSION_FILENAME): New macro.
	(rainbow_archive): Write format version to disk.
	(rainbow_unarchive): Read it from disk if the file exists, otherwise
	set it to 3, which is the format version number of data before
 	BOW_FILE_FORMAT_VERSION was added to the library.

	* rainbow.c (rainbow_options): New option "print-word-counts",
 	alias for "print-counts-for-words".  Hide the later option from
 	the --help text.

	* rainbow-stats.pl (confusion): Print confusion matrix in a more
 	readable format.

	Add new command-line option to rainbow for using only 0 or 1 word
	counts. 
	* opts.c (bow_binary_word_counts): New global variable.
	(bow_options): New option "binary-word-counts".
	(parse_bow_opt): Handle it.
	* bow/libbow.h: Declare new global variable.
	* dv.c (bow_dv_add_di_count_weight): When BOW_BINARY_WORD_COUNTS
 	is true, insist on keeping DV's entry count below 2, i.e. 0 or 1.
	
Fri Apr 18 16:09:06 1997  Andrew McCallum  <mccallum@@jprc.com>

	* configure.in: Add -Wno-implicit to default CFLAGS.

	* rainbow.c (rainbow_lisp_query): Return if QUERY_WV is emtpy.
  	(Previously would have crashed.)

	* tfidf.c (TFIDF_METHOD): Fix typo that defined
 	_register_method_tfidf_.. functions without the last underscore.
	(Reported by Kamal Nigam.)
	
	* split.c (bow_test_split): When selecting documents for test set,
 	and randomly pick a document that was already in the test set,
 	don't just scan sequentially for the next non-test document, pick
 	a new random number.  This will avoid long contiguous stretches of
 	test documents.

	* naivebayes.c (bow_naivebayes_score): Move the handling of
 	SCORE_WITH_LOG_PROBABILITIES.

	* barrel.c (bow_barrel_set_cdoc_priors_to_class_uniform): Assert
 	that CDOC->PRIOR must be greater or equal, not just greater.

Thu Apr 10 14:54:08 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: Fix the `compile-command'.
	(PRINT_TREE_SCORES): New macro.
	(hier_set_method): New function.
	(main): Call it if BOW_ARGP_METHOD is non-NULL.

	* deflexer.c (bow_default_lexer): Initialize it to -1, so that
 	deflexer.o will get linked in under SunOS.  Ug.  See comment.

	* bow/libbow.h (bow_methods): Declare extern!

Wed Apr  9 11:14:13 1997  Andrew McCallum  <mccallum@@jprc.com>

	* lex-html.c (bow_lexer_html_get_raw_word): Return last word in
 	document, even if it is not followed by a non-word character!
	* lex-simple.c (bow_lexer_simple_get_raw_word): Likewise.

	* rainbow.c (rainbow_lisp_setup): Call all
 	__attribute__((constructor)) functions here since this will be
 	dynamically loaded and the contructor functions won't be called
 	then.
	* opts.c (parse_bow_opt): Remove call to
 	_bow_default_lexer_init(); moved to rainbow.c.

	Fix a bug whereby --skip-html was a no-op.
	* deflexer.c (bow_default_lexer_simple,
 	bow_default_lexer_indirect, bow_default_lexer_gram,
 	bow_default_lexer_html, bow_default_lexer_email): Change global
 	variable from struct's to pointers to structs.
	(_bow_default_lexer_simple, _bow_default_lexer_gram,
	_bow_default_lexer_html, _bow_default_lexer_email): New static
 	variables.
	(_bow_default_lexer_init): Set BOW_DEFAULT_LEXER_INDIRECT to point
	inside of BOW_DEFAULT_LEXER_GRAM, which is the BOW_DEFAULT_LEXER.
	* opts.c: Now use all default lexers as pointers to struct's
 	instead of struct's.
	* bow/libbow.h (bow_default_lexer_simple,
 	bow_default_lexer_indirect, bow_default_lexer_gram,
 	bow_default_lexer_html, bow_default_lexer_email): Change global
 	variable from struct's to pointers to structs.

	* vpc.c (bow_barrel_new_vpc_merge_then_weight): Assert the method
 	name.

	* Makefile.in (dist-cmu, bow-$(BOW_VERSION).tar.gz): New targets.

Tue Apr  8 08:00:00 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Version (BOW_MINOR_VERSION): Version 0.7.
	* bow/libbow.h (BOW_MINOR_VERSION): Likewise.
	* rainbow.c (RAINBOW_MINOR_VERSION): Version 0.2.
	* arrow.c (ARROW_MINOR_VERSION): Version 0.2.
	* NEWS: Update for new version of library and rainbow.
	* readme.texi: Likewise.
	* Makefile.in (DIST_FILES): Add NEWS.

	* Makefile.in (dist): Fix invocation of `tr' for cvs rtag.

	* split.c (bow_test_next_wv): Initialize CURRENT_DI to avoid
 	warning.
	* split.c (bow_test_split): Initialize DOC to avoid warning.
	* int4word.c (bow_words_keep_top_by_infogain): Initialize
 	MAX_IG_WI to avoid warning.

	* dv.c (bow_dv_add_di_count_weight): Only give "overflowed short"
 	message at BOW_VERBOSE level, not BOW_PROGRESS level.

	* crossbow.c (main): Initialize NORMALIZER to zero.

	* Makefile.in (dist): Create ./bow directory.  Fix invocation of
 	argp.
	(snapshot): Likewise.

	* configure.in: Add -O to the default CFLAGS.

	* rainbow.c (rainbow_options): Improve some option help text.
	(rainbow_parse_opt) [INFOGAIN_PAIR_VECTOR_KEY]: Handle it.
	* opts.c (bow_options): Improve some option help text.

	* Makefile.in (version.texi): Define BOWVERSION instead of
 	BOW_VERSION, so makeinfo can get the value.
	(%.dvi, %.info): Fix typo.
	* libbow.texi: Fix typos and begin preliminary documentation.

	* rainbow.c (rainbow_options): New option "repeat"/'r'.
	(rainbow_parse_opt): Handle it.
	(rainbow_arg_state): New member REPEAT_QUERY.
	(rainbow_query): Attend to REPEAT_QUERY.

	* naivebayes.c (bow_naivebayes_set_weights): Fix assertion so it
 	works for both naivebayes and crossentropy.

Mon Apr  7 11:00:06 1997  Andrew McCallum  <mccallum@@jprc.com>

	* sarray.c (bow_sarray_entry_at_keystr): If there is no index for
 	that KEYSTR, print an error message.  This way if user mistypes a
 	method name to rainbow's -m option, they get a message that makes
 	some sense.

	* opts.c (_help_filter): New function to add the names of the
 	available methods to the help text.
	(bow_argp): Put it in.

	Use strings to identify methods instead of integers.  Separate
	method declarations instead separate .h files.
	* bow/tfidf.h, bow/naivebayes.h, bow/prind.h: New files.
	* Makefile.in (LIBBOW_H_FILES): Add files bow/naivebayes.h,
 	bow/tfidf.h, bow/prind.h.
	* naivebayes.c (bow_method_naivebayes, bow_method_crossentropy):
 	Use string method identifier instead of integer.
	* prind.c (bow_method_prind): Likewise.
	* tfidf.c (TFIDF_METHOD): Likewise.
	* rainbow.c (rainbow_parse_opt) [G]: Step through methods
 	according to new BOW_METHODS bow_sarray, instead of old static
 	array.
	* methods.c (bow_methods): Static array removed.
	(bow_methods): Renamed from _bow_str4method, and made non-static.
	* barrel.c (bow_method_id, _old_bow_methods): Put copies of what
 	used to be in libbow.h here, so we can unarchive old-format
 	barrel's.
	(BOW_DEFAULT_BARREL_VERSION): Changed from 2 to 3.
	(bow_barrel_new_from_data_fp): If VERSION_TAG is less than 3, read the
	method id integer and use _OLD_BOW_METHOD, otherwise, read a
 	string and use new BOW_METHOD_AT_NAME().
	(bow_barrel_write): Write the method as a string instead of as an
	integer.

	* Makefile.in (ALL_CPPFLAGS): -I$(srcdir) instead of
 	-I$(srcdir)/bow.
	* All files: Include <bow/libbow.h> instead of "libbow.h".

	* bow/libbow.h: Include <bow/tfidf.h>, <bow/naivebayes.h>,
	<bow/prind.h>.
	(bow_method_register_with_name,	bow_method_at_name): Declare functions.
	(bow_method_id): Typedef removed.
	(bow_str_to_method_id): Macro removed.
	(bow_methods): Global variable removed.
	(bow_method_tfidf_words, bow_method_tfidf_log_words,
	bow_method_tfidf_log_occur, bow_params_tfidf): Removed.
	(bow_method_prind, bow_params_prind): Removed.
	(bow_method_naivebayes, bow_params_naivebayes): Removed.

	* methods.c (bow_method_at_name): Comment function.
	(bow_method_register_with_name): Likewise.

	* opts.c (parse_bow_opt) [m]: Use bow_method_at_name().

	* naivebayes.c: Use bow_method_register_with_name().  Add new
 	method "crossentropy".
	(bow_naivebayes_score): Pay attention to SCORE_WITH_LOG_PROBABILITIES
	when setting class priors.  When it is true, use inverse of
 	cross-entropy instead of negative!

	* prind.c: Use bow_method_register_with_name().

	* tfidf.c: Use bow_method_register_with_name().

	* rainbow.c (main): Strip any trailing `/'s from classnames, so
 	FILENAME_TO_CLASSNAME() will find the classnames.  (Reported by
 	Jason Rennie <jr6b@@syrinx.res.cmu.edu>.)

	* rainbow-h.c (PRINT_COUNTS_FOR_WORD_KEY): New macro.
	(rainbowh_options): New option "print-counts-for-words".
	(rainbowh_parse_opt): Handle it.
	(struct rainbowh_arg_state): New member PRINTING_WORD.
	(hier_barrel_print_word_counts): New function.
	(main): Handle new option.  Do the right think for `-O' if 
	BOW_PRUNE_VOCAB_BY_OCCUR_COUNT_N.

	* info_gain.c (LEAVE_OUT_LAST_CLASS): Macro defined once at top.
  	Changed from 0 to 1.

	* install.texi: Explain the results of --prefix.  Remove old
 	references to Objective C installation.

Thu Apr  3 12:50:23 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (rainbow_test_files): Use macros for setting QUERY_WV
 	weights, so we can handle case in which the wv normalizer is NULL!
	(main): Replace code for implementing word-count-printing with
	call to new function.

	* barrel.c (bow_barrel_set_cdoc_priors_to_class_uniform):
 	Initialize ci2dc entries to zero!
	(bow_barrel_print_word_count): New function.

	* opts.c (bow_options): Add new option
 	"naivebayes-score-with-log-probs".
	(parse_bow_opt): Handle it.
	* naivebayes.c (bow_naivebayes_score): Begin adding code to
 	support SCORE_WITH_LOG_PROBABILITIES parameter; not yet finished.
	(bow_naivebayes_params): Add initializer for
	SCORE_WITH_LOG_PROBABILITIES, initialize it BOW_NO.

	* bow/libbow.h: Declare new function.
	(bow_params_naivebayes): New entry SCORE_WITH_LOG_PROBABILITIES.

Wed Apr  2 10:07:30 1997  Andrew McCallum  <mccallum@@jprc.com>

	* configure.in: Add a check to see if __attribute__((constructor))
 	works.  If it does not, define CONSTRUCTOR_FAILS.

	* rainbow.c (rainbow_lisp_setup): Fix typo.

	* Makefile.in ($(PERL_RUNNABLE_FILES)): Use % in pattern and $< in
 	rule so that we get the .pl file from the $(srcdir).

	* rainbow-h.c (rainbowh_options): New option
 	"print-infogain-vector", 'I'.
	(struct rainbowh_arg_state): Add state for it.
	(rainbowh_parse_opt): Handle it.
	(hier_barrel_write_to_file): Close the FP after writing a barrel.
	(hier_barrel_set_vpc_with_weights): Construct and pass a CLASSNAMES
	array.
	(hier_barrel_set_cdoc_priors_to_class_uniform): New function.
	(_hier_barrel_set_node_scores): Print a little header/separator if
	BOW_PRINT_WORD_SCORES.
	(hier_barrel_test): Initialize the QUERY_WV to NULL, so
	BOW_TEST_NEXT_WV doesn't try to free unallocated memory.
	(hier_barrel_print_infogain): New function.
	(rainbowh_archive): New function.
	(rainbowh_unarchive): New function.
	(main): Use above two functions.  Deal with printing infogain.

	* rainbow.c: Re-written for using libargp.  This should make it
	work with the WebKB lisp crawler again.

	* prind.c (bow_prind_score): Make sure CDOC->FILENAME is non-NULL
 	before trying to print it when BOW_PRINT_WORD_SCORES is true.

	* opts.c (parse_bow_opt) [ARGP_KEY_INIT]: Call
 	_bow_default_lexer_init().

	* deflexer.c (_bow_default_lexer_init): Don't make it static.  Use
 	static local variable to make sure we don't run through it twice.
  	This is because we will call is explicitly in
 	opts.c:parse_bow_opt(), because __attribute__ ((constructor))
 	doesn't seem to work on SunOS.

	* Makefile.in (PERL_FILES): Added rainbow-ac.pl and rainbow-pr.pl.
	* (rainbow-ac.pl, rainbow-pr.pl): New files from
	Dayne Freitag <dayne@@cs.cmu.edu>.

Tue Apr  1 10:11:03 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c (rainbowh_parse_opt): Implement option 'M' for
 	use_maximum_likelihood_path.
	(hier_default_method): Renamed from METHOD; all uses changed.
	(hier_barrel): New member NUM_NON_REST_CDOCS, to keep track of
	DOC_BARREL->CDOCS->LENGTH *before* the `rest' documents start
 	getting added, so that we can implement
 	HIER_PARENT_DI_TO_CHILD_INDEX_AND_DI properly.
	(hier_barrel_new): Initialize it to -1.
	(hier_barrel_add_child): Set it.
	(hier_barrel_new_from_text_dir_leaf): Set it.
	(hier_barrel_write_to_file): Write it.
	(hier_barrel_new_from_file): Read it.
	(hier_parent_di_to_child_index_and_di): Use it.
	(hier_barrel_print): Print it instead of DOC_BARREL->CDOCS->LENGTH.
	(hier_barrel_add_stats): New function split out from
	HIER_BARREL_ADD_CHILD.
	(hier_barrel_add_child): Use it.
	(hier_barrel_add_rest): New function.
	(hier_barrel_new_from_text_dir): Call it to add `rest' documents.
	(hier_barrel_test): Allocate space for 3 as many SCORES, to make room
	for the `rest' classes.
	(main): Set HIER_DEFAULT_METHOD from BOW_ARGP_METHOD, if non-NULL.

	* scale.c (bow_barrel_scale_weights_by_given_infogain): Only
 	verbosify every 100 words.
	(bow_barrel_scale_weights_by_given_foilgain): Likewise.

	* vpc.c (bow_barrel_set_vpc_priors_by_counting): Fix indentation.

	* rainbow-h.c: Converted to do command-line argument processing
 	with libargp.

	* opts.c (bow_options): Remove "version" 'V' option.  libargp can
 	handle that automatically.
	(_print_version): New function to print both program version and
	library version.
	(argp_program_version_hook): Set it to _PRINT_VERSION().

	* rainbow.c (rainbow_print_usage): Function removed.  Libargp does
 	that now.

Mon Mar 31 11:07:30 1997  Andrew McCallum  <mccallum@@jprc.com>

	* barrel.c (bow_barrel_set_cdoc_priors_to_class_uniform): Use
 	ALLOCA() instead of BOW_MALLOC() to avoid memory leak.

	* Makefile.in (configure, config.status): Sprinkle with $(srcdir).

	* configure.in: Move the setting of CFLAGS above AC_PROC_CC, so
 	that it will have an effect.

	* install.texi: Mention how to set CPPFLAGS in the ./configure
 	line.

	* vpc.c (bow_barrel_set_vpc_priors_by_counting): Properly set the
 	CDOC->PRIOR's.

	* rainbow.c (INFOGAIN_PAIR_VECTOR_KEY): New macro.
	(rainbow_options): New option "infogain-pair-vector".
	(rainbow_parse_opt): Handle it.
	(main): Likewise.  When RAINBOW_WORD_COUNT_PRINTING, also print the
	total number of words in each class.

	* prind.c (bow_prind_set_weights): Get MAX_WI from MIN of
 	WI2DVF->SIZE and BOW_NUM_WORDS(), not just BOW_NUM_WORDS().

	* opts.c (bow_uniform_class_priors): New global variable.
	(bow_options): New option "uniform-class-priors".
	(parse_bow_opt): Handle it.

	* naivebayes.c (bow_naivebayes_set_weights): Get MAX_WI from MIN
 	of WI2DVF->SIZE and BOW_NUM_WORDS(), not just BOW_NUM_WORDS().
	(bow_naivebayes_score): Pay attention to BOW_UNIFORM_CLASS_PRIORS.
	Don't sum in score of words that don't have a DV entry!
  	Previously we were allowing words that `aren't in the vocabulary'
 	of the BARREL to contribute!  This was wrong.  They were
 	contributing according to the Laplace Estimators, and classes with
 	larger numbers of words were getting penalized.

	* info_gain.c (bow_infogain_per_wi_new): Sum floating point
 	CDOC->PRIOR's instead of increment integer count of documents, so
 	that infogain can be calculated from documents with different
 	`weights'.
	(bow_infogain_per_wi_new_using_pairs): New function.  For now it
	prints its results instead of returning them.

	* barrel.c (bow_barrel_set_cdoc_priors_to_class_uniform): New
 	function.

	* bow/libbow.h: Declare new functions.

Mon Mar 31 11:56:48 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* Makefile.in (CFLAGS, CPPFLAGS): Get values from configure.
	* configure.in: Do AC_SUBST() for CPPFLAGS and CFLAGS.

Fri Mar 28 10:28:26 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: Fix spelling: "heir" -> "hier".  How embarrassing!

	* dv.c (bow_dv_new_from_data_fp): Fix typo in feof() assertion.
  	(Reported by Doreen Cheng <dcheng@@PRPA.Philips.COM>.)

	* rainbow.c (PRINT_COUNTS_FOR_WORD_KEY): New macro.
	(rainbow_options): New option "print-counts-for-word".
	(rainbow_parse_opt): Handle it.
	(main): Implement it.

	* bow/libbow.h: (bow_wi2dvf): Add new element to structure:
	`num_words'.
	(bow_barrel): Put `is_vpc' at end of structure instead of the
	beginning. 

	* wi2dvf.c (bow_wi2dvf_new): Initialize NUM_WORDS.
	(bow_wi2dvf_add_di_wv): Increment it.
	(bow_wi2dvf_add_wi_di_count_weight): Likewise.
	(bow_wi2dvf_new_from_data_fp): Likewise.
	(bow_wi2dvf_remove_wi): Decrement it.
	(bow_wi2dvf_print_stats): Print it.

	* prind.c (bow_prind_set_weights): Use BARREL->WI2DVF->SIZE and
 	BARREL->WI2DVF->NUM_WORDS instead of BOW_NUM_WORDS().  In
 	particular, this will allow us to set the Laplace estimators using
 	the correct number of words in the barrel, not the arbitrary
 	libbow-wide vocabulary size.  Properly use CDOC->WORD_COUNT
 	instead of overloading CDOC->NORMALIZER.
	(bow_prind_score): Likewise use BARREL->WI2DVF->SIZE and
	BARREL->WI2DVF->NUM_WORDS instead of BOW_NUM_WORDS().
	(bow_print_word_scores): Removed to opts.c.

	* opts.c (bow_print_word_scores): Global variable moved here from
 	prind.c.
	(bow_options): New option "print-word-scores".
	(parse_bow_opt): Handle it.

	* naivebayes.c (bow_naivebayes_set_weights): Use
 	BARREL->WI2DVF->SIZE and BARREL->WI2DVF->NUM_WORDS instead of
 	BOW_NUM_WORDS().  In particular, this will allow us to set the
 	Laplace estimators using the correct number of words in the
 	barrel, not the arbitrary libbow-wide vocabulary size.
	(bow_naivebayes_score): Likewise, and add code to print scores
	contributions of each word with BOW_PRINT_WORD_SCORES is non-NULL.
	(SCORE_WITH_LOG_PROBABILITIES): New macro.

	* barrel.c (bow_barrel_printf): Comment out the code that would
 	skip over documents that are not of type `model'.

Thu Mar 27 11:29:34 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-stats.pl: Make output labels more descriptive.  Say
 	`average percentage accuracy'.

	* split.c (bow_test_split): Use the micro-seconds field from
 	gettimeofday() instead of time() to set the random number
 	generator seed.  Otherwise, if we re-call this function too
 	quickly we'll get exactly the same seed!  ...because time()
 	returns a number of seconds.

	* demos/script: New shell script file that will demo rainbow,
	with running commentary.
	* demos/data: New directory containing 20 articles 2 newsgroups.
	This is for use with demos/script.

	* install.texi: Remove mention of `checks' and `examples'
 	directory; they don't exist.  (Reported by Doreen Cheng
	<dcheng@@PRPA.Philips.COM>.)

Mon Mar 24 12:07:53 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.in (rainbow-lisp.o): Use $(ALL_CPPFLAGS) and
 	$(ALL_CLFAGS) instead of non-ALL versions.

	* rainbow.c (rainbow_lisp_setup): Rewrite for use with libargp.

	* methods.c (bow_method_at_name): Fix typo.
	(bow_method_at_index): Likewise.

	* opts.c (parse_bow_opt): Use 'g' instead of 'N' for setting gram
 	size.

	* rainbow.c (rainbow_lisp_query): Free the QUERY_WV before
 	returning!

	* methods.c (bow_method_register_with_name): New function.
	(bow_method_at_name): New function.

	* arrow.c (PRINT_IDF_KEY): New macro.
	(arrow_options): Add new option "print-idf".
	(struct arrow_arg_state): New enum ARROW_PRINTING_IDF.
	(arrow_index): Prune the vocabulary if
	BOW_PRUNE_VOCAB_BY_OCCUR_COUNT_N is non-zero.
	(main): Add code to print idf values.

	* lex-simple.c (bow_alpha_lexer, bow_alpha_only_lexer,
 	bow_white_lexer): Initialize STEM_FUNC to 0 instead of
 	BOW_STEM_PORTER.

	* tfidf.c (bow_tfidf_set_weights): Comment out code that sets
 	total_word_count.  Do the DF_TRANSFORM on DF, not on IDF!
  	Otherwise we get negative IDF's.

	* rainbow-h.c (use_maximum_likelihood_path): New global variable.
	(_heir_barrel_set_node_scores): Use it.
	(main): Set it when -M passed on command line.
	(num_top_words): Moved from main-local variable to global.
	(heir_barrel_test): Reduce vocab by infogain.

Fri Mar 21 14:02:39 1997  Andrew McCallum  <mccallum@@jprc.com>

	* bow/libbow.h (bow_lexer_simple): Add entry
 	TOSS_WORDS_LONGER_THAN.
	(bow_wv_set_weights_to_count_times_idf): Declare new function.

	* wv.c (bow_wv_set_weights_to_count_times_idf): New function.

	* tfidf.c (bow_tfidf_set_weights): Comment out code saying that
 	TFIDF is broken.  Rewrite the way IDF is calculated.
	(bow_tfidf_score): Set and normalize the QUERY_WV weights here (even
	though it is redundant) so that we can properly use the IDF from
 	the BARREL when normalizing weights.  Normalize the QUERY_WV
 	weight when incrementing CURRENT_SCORE.

	* prind.c (bow_prind_set_weights): Skip a document if it does not
 	of type model, both when setting NORMALIZER and TOTAL_TERM_COUNT,
 	and when setting weights.
	(bow_prind_score): Skip a document if it does not of type model.

	* lex-simple.c (bow_lexer_simple_postprocess_word): Add code to
 	toss words longer than SELF->TOSS_WORDS_LONGER_THAN.  Set WORDLEN
 	at beginning.  It appeared that it was getting used uninitialized
 	before!
	(bow_alpha_lexer, bow_alpha_only_lexer, bow_white_lexer): Add value
	for new field TOSS_WORDS_LONGER_THAN.

	* opts.c (APPEND_STOPLIST_FILE_KEY): New macro.
	(bow_options): Added "append-stoplist-file"
	(parse_bow_opt): Handle new option.

	* int4str.c (_str2id): Return the absolute value of the old return
 	value.  Sometimes with really long strings, the return value was
 	going negative.
	(_str_hash_lookup): Assert that ID is non-negative.

Thu Mar 20 11:47:49 1997  Andrew McCallum  <mccallum@@jprc.com>

	These changes by Karl Kleinpaste <karl@@jprc.com>
	* int4word.c (bow_words_reread_from_file): Use fopen() instead of
 	bow_fopen(), so we are sure not to call abort().
	* wv.c (bow_wv_sprintf): Fix function to account for length
 	troubles properly.
	(bow_wv_sprintf_words): New function, prints the words themselves,
	rather than the word indices.
	* bow/libbow.h: Declare new function.

	* naivebayes.c (bow_naivebayes_set_weights): Add commented-out
 	code that forces all counts to either 0 or 1.  This was used on
 	some experiments with Shumeet.

	* lex-html.c (bow_lexer_html_get_raw_word): Add a ! to the
 	FALSE_TO_END condition test, so we don't end the tokenization too
 	early.

Tue Mar 18 14:47:35 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (rainbow_parse_opt) [ARGP_KEY_END]: Print a useful
 	error when only one classname is given.
	(main): Check for rainbow_infogain_printing properly.

	* opts.c (parse_bow_opt) [ARGP_KEY_END]: Check for the existance
 	of BOW_DATA_DIRNAME in a way that works even when the directory is
 	owned by someone else.

	* bow/libbow.h (bow_fread_string): Assert that the string length
 	is non-negative.

	* barrel.c (_bow_barrel_version): New variable.
	(BOW_DEFAULT_BARREL_VERSION): New macro.
	(bow_barrel_new_from_data_fp): Read the version number instead of a
	null_tag.
	(bow_barrel_write): Likewise, for writing.

	* arrow.c (main): Remove redundant code that is now in opts.c.

Mon Mar 17 12:09:32 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.in (%.o:%.c): Fix the order on this pattern rule.
	($(DEMO_EXECUTABLES):%:%.o): Put $(DEMO_EXECUTABLES) at the beginning
	of this pattern, so it matches only those files.

	* arrow.c: Don't include getopt.h; we're using argp.h instead.
	(arrow_index): Fix typo.

	* configure.in: Don't look for getopt.h anymore.  We don't need it
 	now that we are using libargp.

	* configure.in: AC_INIT looking for int4str.c instead of libbow.h.

	* Makefile.in (%): Use this pattern to make DEMO_EXECUTABLES
 	instead of listing them all.  This avoids making all the .o's for
 	one of the DEMO_EXECUTABLES.

	* rainbow.c: Converted to use argp command-line argument
 	processing.

	* opts.c (bow_argp_method): Renamed from bow_default_method.
	(parse_bow_opt) [ARGP_KEY_INIT]: Add words to stoplist.

	* deflexer.c (_bow_default_lexer_init): Initialize
 	bow_default_lexer to BOW_DEFAULT_LEXER_GRAM, not BOW_LEXER_GRAM!

	* bow/libbow.h (bow_argp_method): Renamed from bow_default_method.

	* arrow.c (arrow_parse_opt) [q]: Set query.filename.
	(arrow_index): BOW_DEFAULT_METHOD renamed to BOW_ARGP_METHOD.

	* arrow.c (arrow_index): Set the method according to
 	BOW_DEFAULT_METHOD.

	* opts.c: Fleshed out into first working version.

	* error.c: Comment fix.  Include libbow.h and stdio.h.

	* deflexer.c (_bow_default_lexer_init): New constructor function.
	(bow_default_lexer_simple, bow_default_lexer_indirect,
	bow_default_lexer_gram, bow_default_lexer_html,
 	bow_default_lexer_email): New variables, default instantiations of
 	lexers.

	* bow/libbow.h: Add argp declarations.
	(bow_argp_children): New variable.
	(bow_prune_vocab_by_infogain_n): New variable.
	(bow_prune_vocab_by_occur_count_n): New variable.
	(bow_default_method): New variable.
	(bow_data_dirname): New variable.

	* arrow.c: Convert to using argp for command-line processing.

	* Makefile.in: Change all instances of `libbow.h' to `bow/libbow'.
	(includedir): Add `/bow' to end.
	(LIBBOW_C_FILES): Add opts.c.
	(ALL_CPPFLAGS): add -I$(srcdir)/bow and -I$(srcdir)/argp.
	(rainbow-lisp.o): Use $< instead of rainbow.c, so VPATH will find it
	when compiling in a different directory than the source.

	* bow/libbow.h (STRINGIFY): New macro.
	(bow_default_lexer_simple, bow_default_lexer_indirect,
	bow_default_lexer_gram, bow_default_lexer_html,
 	bow_default_lexer_email): Declare default instantiations of
 	lexers.

Fri Mar 14 11:01:14 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.in (LIBBOW_C_FILES): Renamed defparser.c to deflexer.c.
	* deflexer.c: Renamed from defparser.c.

	Add the `argp' subdirectory, and incorporate it into the Makefile.
	* HACKING: Add argp autoconf instruction.
	* configure.in: Call AC_CONFIG_SUBDIRS to configure argp also.
	* Makefile.in (ALL_LIBS): Move it closer to $(DEMO_EXECUTABLES)
 	target.  $(DEMO_EXECUTABLES): Make this target depend on
 	argp/libargp.a.
	(install): Call make install in argp directory also.
	(dist, snapshot): Call make in argp directory to include its files too.
	
Wed Mar 12 20:00:27 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.in (CPPFLAGS): Don't include $(DEFS) here, it's now in
 	ALL_CPPFLAGS.

	* Makefile.in (ALL_CPPFLAGS): New variable.
	(ALL_CFLAGS): New variable.
	(.c.o): New pattern rule that uses above new variables.  Now Kamal can
	safely type `make CPPFLAGS=-DNDEBUG'.

	* rainbow-h.c (_heir_barrel_set_node_scores): Don't threshhold the
 	scores to 0/1.
	(strdup): New function.  Implement this local version to help with
	debugging.  Consider removing it later.

	* libbow.h (bow_params_prind): Remove variable SCALE_BY_FOILGAIN.
	It isn't needed since we have a function pointer for it in BOW_METHOD.
	* prind.c (bow_prind_params): Remove BOW_NO for scaling.
	* rainbow.c (rainbow_lisp_setup): Remove setting of
 	BOW_PRIND_SCALE_BY_INFOGAIN; it now defaults to on.
	(rainbow_print_usage): Change the sense of -G.  It now turns off
	foilgain scaling, instead of turning on.  (Actually, it was the
 	default before this anyway.)
	(main): Given -G, zero-out the SCALE_WEIGHTS entries in all the
	methods. 

Tue Mar 11 11:58:03 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Version (BOW_MINOR_VERSION): Version 0.6.
	* libbow.h: Likewise.

	* Makefile.in (DIST_FILES): Add TODO.  Remove p.inc.
	(p-alpha.o, p-alonly.o, p-white.o): Targets removed.

	* rainbow.c (rainbow_query): Use bow_barrel_ macros instead of
 	indexing into the methods structure manually.

	* crossbow.c: Add copyright info.

	* readme.texi: Fill out.
	* libbow-desc.texi: Add description.
	* install.texi: Add pointer to the README.  Say that it requires GCC. 
	* HACKING: Update CVS repository machine name.

	* tfidf.c (bow_tfidf_set_weights): Insert dislaimer explaining
 	that TFIDF is broken.

Tue Mar 11 11:31:39 1997  Rahul Sukthankar  <rahuls@@syzygy.jprc.com>

	* Makefile.in (DEMO_C_FILE): Added crossbow.c.
	* crossbow.c: New file.

Mon Mar 10 18:52:03 1997  Andrew McCallum  <mccallum@@jprc.com>

	* int4str.c (_str2id): Keep return value smaller using modulus.
	This fixes bug Rosie Jones encountered with negative hash values.
	(_str_hash_lookup): Assert that H is non-negative.

	* Makefile.in (LIBBOW_C_FILES): Added lex-email.c.

Fri Mar  7 10:54:09 1997  Andrew McCallum  <mccallum@@jprc.com>

	* int4word.c (bow_words_reread_from_file): Make sure LAST_FILE is
 	non-NULL.

Tue, 18 Feb 1997 20:15:42 -0500  Jason Rennie <jr6b@@andrew.cmu.edu>

        * lex-email.c: New file.  Created lexer for e-mail/newsgroup messages

	* lex-html.c: Changed code to allow words separated by HTML tags
 	to be tokenized as single words.  <FONT SIZE=+2>B</FONT>ig is now
 	tokenized as "Big".  Nested brackets are now ignored.  This should
 	more closely model the way HTML is interpreted.

	* rainbow.c: Added rainbow_email_lexer as a bow_lexer_indirect.
  	Added '-M' option to allow user to make use of
 	rainbow_email_lexer.  rainbow_email_lexer will remove
 	"Newsgroups:" and "Path:" headers from message.

	* libbow.h (bow_email_headers_to_remove): Declare new global variable. 
	(bow_email_lexer): Likewise.

Tue Mar  4 11:51:53 1997  Andrew McCallum  <mccallum@@jprc.com>

	* libbow.h (bow_barrel_scale_weights): Don't call underlying
	function if it's NULL.
	(bow_barrel_normalize_weights): Likewise.
	(bow_wv_set_weights): Likewise.
	(bow_wv_normalize_weights): Likewise.
	* vpc.c (bow_barrel_new_vpc_merge_then_weight): Use macros for
 	weight setting.
	(bow_barrel_new_vpc_weight_then_merge): Likewise.

	* rainbow-h.c (_heir_barrel_cdoc_write): Write WORD_COUNT.
	(_heir_barrel_cdoc_read): Read it.
	(heir_dir_is_leaf): Check the return status from CHDIR(), and print
	appropriate error message.
	(heir_barrel_keep_top_words_by_infogain): Return immediately if
	num_words_to_keep is 0 or the children count is 0.
	(heir_barrel_set_vpc_with_weights): Return immediately if the children
	count is 0.
	(_heir_barrel_set_node_scores): Add temporary #if'ed code to make
	score either 1 or 0, so winner takes all.
	(heir_barrel_score_recurse): New argument DEPTH.  All callers changed.
	(main): Change default NUM_TOP_WORDS from 3000 to 0.  Add new command
	line argument -m and -N.

	Changes made with Sean Slattery.
	* naivebayes.c (bow_naivebayes_set_weights): Store class-wide word
 	count in CDOC->WORD_COUNT instead of overloading CDOC->NORMALIZER.
	(bow_naivebayes_score): Use CDOC->WORD_COUNT instead of
	CDOC_NORMALIZER.  Use it to fix PR_W_C in case where that word
	doesn't appear in the class.  Instead of (1.0 / MAX_WI) use (1.0 /
	(MAX_WI + CDOC->WORD_COUNT)).  Don't normalize the weight by
 	CDOC->NORMALIZER because it it set to already by normalized
 	correctly, including the words that don't appear in the in class.
	(bow_method_naivebayes): Change the weight normalizing function from
	BOW_NORMALIZE_WEIGHTS_BY_SUMMING to NULL, because we don't use
 	CDOC->NORMALIZER anymore.
	* libbow.h (bow_cdoc): Add WORD_COUNT.
	* barrel.c (_bow_barrel_cdoc_write): Write WORD_COUNT.
	(_bow_barrel_cdoc_read): Read it.

	* vpc.c (bow_barrel_new_vpc): Assert MAX_CI is positive, otherwise
 	this means we didn't find any classes.

Wed Feb 26 11:08:50 1997  Andrew McCallum  <mccallum@@jprc.com>

	* HACKING: Fix sandbox's name.

Wed Feb 19 11:27:55 1997  Andrew McCallum  <mccallum@@jprc.com>

	* barrel.c (bow_barrel_keep_top_words_by_infogain): Return
 	immediately if NUM_WORDS_TO_KEEP is 0.

Tue Feb 18 13:39:34 1997  Andrew McCallum  <mccallum@@jprc.com>

	* libbow.h (bow_str_to_method_id): Use a temporary variable, to we
 	use statements like ARGI++ as an argument.

	* info_gain.c (bow_infogain_per_wi_new): Change assertion to
 	handle round-off error.

	* rainbow-h.c: Include <math.h>, <time.h>.
	(heir_barrel): Add components INDEX_IN_PARENT, NUM_LEAVES, FULL_NAME.
	(heir_barrel_new): Set them.
	(heir_dir_is_leaf): Use chdir() so that symlinks are dealt with
	properly. Free() the results of scandir().
	(heir_barrel_new_from_text_dir_leaf): Set FULL_NAME and add assertions.
	(_heir_barrel_new_from_text_dir_recurse): New parameter PARENT_NAME.
	Move the chdir() to handle symlinks properly.  Don't make a
 	SUBDIRNAME.
	(heir_barrel_new_from_text_dir): New function.
	(heir_barrel_write_to_file): Write new heir_barrel components.
	(heir_barrel_new_from_file): Read them.
	(heir_barrel_free): Free FULL_NAME.
	(heir_barrel_keep_top_words_by_infogain): New function.
	(heir_parent_di_to_child_index_and_di): New function.
	(heir_di_to_classname): New function.
	(heir_barrel_test_split): New function.
	(_heir_barrel_set_node_scores): Use bow_barrel_score() instead to
	bow_get_best_matches().
	(heir_barrel_print_scores_recurse): Return void not int.  Print all on
	same line.
	(heir_barrel_score_recurse): New function.
	(heir_barrel_score): New function.
	(heir_barrel_test): New function.
	(heir_barrel_print_weight_vectors): Change formatting.
	(set_vocabulary_from_file): New function (unused).
	(main): Allow user to set DATADIR (-d) and NUM_TOP_WORDS (-T), 
	test (-t).
	Compile with -Wall.

Mon Feb 17 10:36:32 1997  Andrew McCallum  <mccallum@@jprc.com>

	* configure.in: Remove check for <float.h>, all ANSI compilers
 	should have it.

	* split.c: Remove SunOS declarations of rand() and srand().
	(RAND_MAX): Define macro, if not already defined.  These two
	changes needed to compile on SunOS.

	* naivebayes.c (bow_naivebayes_set_weights): Uncomment assertion
 	about METHOD->ID.

	* rainbow.c (rainbow_lisp_setup): Add `-N' to effective arguments.
	(rainbow_lisp_query): Fix typo in BOW_FOPEN() call.

	* rainbow.c (rainbow_query): Check for QUERY_WV being NULL, and
 	output more useful messages in that case.

	* naivebayes.c (bow_naivebayes_score): Rearrange the code for
 	stepping through a DV so we always get the CDOC.  This change
 	should have no effect on the outcome.

	* lex-simple.c (bow_lexer_simple_open_text_fp): Fix test for
 	matching END_PATTERN_PTR.  Don't push the DOCUMENT_END_PATTERN
 	back on the input stream after we find it; this is a stylistic
 	choice.

	* docnames.c (bow_map_filenames_from_dir): Pass relative instead
 	of absolute directory names to recursive calls.  Before I was
 	having trouble with symbolic links.  This seems to fix it.

	* int4word.c (bow_words_keep_top_by_infogain): Fix assertions; its
 	OK to have infogain equal to 0.

	* prind.c: Comment fixes.

	* foilgain.c (bow_foilgain_per_wi_ci_new): Use malloc() for
 	POS_PER_WI_CI and NEG_PER_WI_CI, instead of using stack.  We were
 	overflowing the stack before.

Tue Feb 11 12:15:30 1997  Andrew McCallum  <mccallum@@jprc.com>

	* naivebayes.c (bow_naivebayes_score): When word doesn't appear in
 	the class vector, make Pr(w|C) include CDOC->NORMALIZER.
  	(Suggested by Sean Slattery).

	* naivebayes.c (bow_naivebayes_score): Fix constant in assertion.

	* configure.in: When perl5 isn't found, PERL will be "", not ":".
  	Deal with it properly.

	* libbow.h: Don't bother with HAVE_FLOAT, just always include
 	<float.h>.
	(bow_get_best_matches): Remove declaration.  The function no longer
	exists.

	* rainbow.c (rainbow_test): Use macros for accessing method
 	functions.

	* split.c: Fix author comment.

	* info_gain.c (bow_infogain_per_wi_new): Use double instead of
 	float, because before we were loosing resolution and getting
 	negative IG's.
	(bow_entropy): Likewise.

Mon Feb 10 16:25:04 1997  Andrew McCallum  <mccallum@@jprc.com>

	* docnames.c (bow_map_filenames_from_dir): Use perror() when can't
 	open directory.

Fri Feb  7 11:00:50 1997  Andrew McCallum  <mccallum@@jprc.com>

	* int4word.c (bow_words_read_from_file): Fix typo.

	* rainbow.c (rainbow_lisp_query): Use bow_barrel_score instead of
 	bow_get_best_matches.

	These changes by Tony Brusseau <brusseau@@jprc.com>, with
	modifications by <mccallum@@jprc.com>.
	* wv.c (bow_wv_new_from_text_string): New function.
	(bow_wv_sprintf): New function.
	* int4word.c (bow_words_set_map): Add new argument indicating if
 	old map should be freed.  All callers changed.
	(bow_words_reread_from_file): New function.
	* docnames.c: Include <stdio.h>.
	(bow_map_filenames_from_dir): Add WindowsNT backslashes to first
	assertion.
	* libbow.h: Declare new functions.

Thu Feb  6 18:33:21 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c: Updated for below library changes.
	* arrow.c: Likewise.

	* libbow.h: Declare many new functions, variables and types,
 	including:
	(bow_boolean): New type.
	(bow_wv_set_weights_to_count): New function declaration.
	(bow_wv_normalize_weights_by_vector_length): Likewise.
	(bow_wv_normalize_weights_by_summing): Likewise.
	(bow_str_to_method_id): Macro renamed from bow_str2method.
	(bow_method_id): New enum, replacing bow_method.
	(bow_method): Now a struct.
	(bow_barrel_set_weights, bow_barrel_scale_weights,
	bow_barrel_normalize_weights, bow_new_vpc_with_weights,
 	bow_barrel_score, bow_wv_set_weights, bow_wv_normalize_weights):
 	New macros.
	(bow_methods): New global variable declaration.
	(bow_params_*): New types.
	(bow_score): Renamed from bow_doc_score.

	* wv.c (bow_wv_set_weights_to_count): New function.

	* weight.c: File removed.

	* vpc.c (bow_barrel_new_vpc_merge_then_weight): New function.
	(bow_barrel_new_vpc_weight_then_merge): New function.
	(bow_barrel_set_vpc_priors_by_counting): Renamed from
	_bow_barrels_set_naivebayes_vpc_priors.

	* tfidf.c: File contents totally replaced to implement TFIDF.
  	Functions removed from weight.c and other places.
	(bow_tfidf_set_weights): Function renamed.
	(bow_tfidf_score): Function renamed from bow_get_best_matches().
	(bow_tfidf_params_{words,log_words,log_occur}): New variables.
	(bow_method_tfidf_{words,log_words,log_occur}): New global variables.

	* prind.c (bow_prind_uniform_priors): Global variable removed.
	(bow_prind_scale_by_infogain): Likewise.
	(bow_prind_normalize_scores): Likewise.
	(bow_prind_set_weights): Renamed from _bow_barrel_set_prind_weights.
	(bow_prind_score): Renamed from _bow_score_prind_from_wv, and updated
	for library changes.
	(bow_prind_params): New variable.
	(bow_method_prind): New global variable.

	* score.c: File removed.

	* naivebayes.c (_bow_barrels_set_naivebayes_vpc_priors): Function
 	removed.  Replacement in vpc.c.
	(bow_naivebayes_set_weights): Minor updates for library changes.
	(bow_naivebayes_params): New variable.
	(bow_method_naivebayes): New global variable.

	* info_gain.c (bow_barrel_scale_weights_by_info_gain): Function
 	removed.  Replacement is now in scale.c.
	(bow_barrel_scale_weights_by_foilgain): Likewise.
	(bow_foilgain_per_wi_ci_new): Likewise.  Replacement now in foilgain.c.
	(bow_foilgain_free): Likewise.

	* barrel.c (bow_barrel_new): Make the default method naivebayes,
 	instead of tfidf_log_occur.
	(bow_barrel_new_from_data_fp): Get the METHOD pointer from
	BOW_METHODS.
	(bow_barrel_write): Write the ID.

	* Makefile.in (CPPFLAGS): Add $(DEFS).
	(ALL_INCLUDE_FLAGS, ALL_CPPFLAGS, ALL_CFLAGS, ALL_LDFLAGS): Variables
	removed.
	(LIBBOW_C_FILES): Added foilgain.c, methods.c, normalize.c, scale.c,
	tfidf.c.  Removed score.c, weight.c.
	(DEMO_EXECUTABLES): Don't use ALL_LDFLAGS.

Tue Feb  4 14:21:08 1997  Andrew McCallum  <mccallum@@jprc.com>

	* split.c (bow_test_split): Properly deal with the fact the rand()
 	returns an int between 0 and RAND_MAX, and the previously-use
 	drand48() returned a double between 0 and 1.

Mon Feb  3 12:44:18 1997  Andrew McCallum  <mccallum@@jprc.com>

	Following changes made by Tony Brusseau for WindowsNT compatibility.
	* configure.in: Check for <float.h>.
	* libbow.h: Include float.h if we have it; otherwise include
 	values.h and redefine its macros.
	(htonl, htons, ntohl, ntohs): Temporarily define as identity for
	WindowsNT.
	(bow_fwrite_string): Cast sizeof() to int.
	* split.c: Use rand() and srand() instead of drand48() and
 	srand48().
	* rainbow.c (rainbow_test_files): Make DIRLEN unsigned, to avoid
 	warning under WindowsNT.
	* primes.c: Use unsigned int's instead of int's in several places,
 	to avoid warnings under WindowsNT.
	* dv.c: Don't include <netinet/in.h>.  Use <limits.h>-style
 	MAX'es.
	* naivebayes.c: Use <limits.h>-style MAX'es.
	* int4word.c: Likewise.
	* configure.in: Look for the wsock32 library.

	* prind.c (_bow_score_prind_from_wv): Don't die if SCORES_SUM is
 	zero; just leave zero scores on all classes.

	* rainbow.c (main): Add `s' to getopt call.
	(rainbow_index): Add newline to end of "No text files" message.

Fri Jan 31 11:28:54 1997  Andrew McCallum  <mccallum@@jprc.com>

	* Makefile.in (rainbow-lisp.o): New target.

	* rainbow.c (rainbow_lisp_setup): New function.  (From Kamal.)
  	Surround this and rainbow_lisp_query by #if RAINBOW_LISP.
	(main): Surround by #if !RAINBOW_LISP.

	* HACKING: Change the cvsroot in directions for networked
 	`pserver' use.

	* libbow.h: If under WinNT, include <winnt.h>, otherwise include
 	<values.h>.
	* bitvec.c (BITSPERBYTE): Surround it with an #ifndef.
	* prind.c: Don't include <values.h>.
	* naivebayes.c: Likewise.
	* int4word.c: Likewise.
	* dv.c: Likewise.
	* bitvec.c: Likewise.
	(BITSPERBYTE): New macro.

Wed Jan 29 10:10:11 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow.c (rainbow_lisp_query): New function.

	* Makefile.in (maintainer-clean): Add config.* files.

	* configure.in: Add quotes around $PERL so test will still work if
 	$PERL is empty.

	* rainbow-h.c (_heir_barrel_set_node_scores): Add some temporary
 	progress printing.
	(heir_barrel_print_scores_recurse): Renamed.
	(heir_barrel_print_scores): New function.
	(heir_barrel_print_foilgain): New function.
	(heir_barrel_print_weight_vectors): New function.
	(main): Add new options for calling new functions.

	* prind.c (_bow_score_prind_from_wv): Add three checks for NaN.

	* int4word.c (bow_words_write_to_file): New function.
	(bow_words_read_from_file): New function.
	* libbow.h: Declare new word functions.

	* rainbow-h.c (method): New global variable.
	(heir_barrel): Added component SCORE.
	(heir_barrel_new_from_text_dir_leaf): Set doc_barrel method.
	(heir_barrel_new_from_text_dir): Likewise.
	(main): Take -i and -q arguments.

	* libbow.h (bow_fwrite_string): Change type of LEN from int to
 	short.

	* vpc.c (bow_barrel_new_vpc): Don't abort if CLASSNAMES is NULL.

Tue Jan 28 15:49:46 1997  Andrew McCallum  <mccallum@@jprc.com>

	* rainbow-h.c: New file.

	* barrel.c (bow_barrel_write): Handle case in which BARREL is NULL.
	(bow_barrel_new_from_data_fp): Likewise.  (xxx Although there is some
	strangeness with FGETC returning -1, which I am currently
 	ignoring.  I should look at this again...)

	* defparser.c (bow_default_lexer): Temporary fix to confusion
 	about constant initializers and pointers.

	* Makefile.in: Fix copyright.

	* barrel.c: Fix header comment.
	(bow_barrel_printf): Print the word as well as the word index.

	* docnames.c (bow_map_filenames_from_dir): Remove commented-out
 	code for checking whether the file contains text.

Thu Jan 23 13:47:01 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* barrel.c (bow_barrel_printf): Don't print with paren's, so it
 	will be easier to process with AWK.

	* rainbow.c (main): Add new option -B for printing barrel word
 	vectors in ASCII.
	(rainbow_print_usage): Document it.

	* barrel.c (bow_barrel_printf): New function.
	* libbow.h: Declare new barrel function.

Sat Jan 18 08:14:59 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow.c (main): Add -N option for turning off normalization of
 	PrInd scores by setting BOW_PRIND_NORMALIZE_SCORES.
	(rainbow_print_usage): Document it.

	* vpc.c (FOILGAIN): New macro, defined to be 1.  Switching back to
 	doing foilgain by default.

	* prind.c (bow_prind_normalize_scores): Change to 1.  Now
 	normalizing scores by default.
	* libbow.h: Declare prind normalization global variable.

	* vpc.c (bow_barrel_new_vpc_with_weights): Condition choice of
 	weight-scaling on FOILGAIN.  Now default is to do scaling by
 	information gain (again).

	* prind.c (bow_prind_normalize_scores): New global variable.
  	Default: 0, don't normalize.  Note, this is different than what we
 	were doing before, and the default should be changed back to 1.
	(_bow_score_prind_from_wv): Use it.

	* rainbow.c (rainbow_index): Don't exit with error when a class
 	directory is empty, just print a message.
	(rainbow_usage): Fix description of -G to Foil-gain, not info-gain.

	* prind.c:  Improve formating of score printing.

	* rainbow.c (main): New command-line argument `-P' sets
 	BOW_PRINT_WORD_SCORES.
	(rainbow_print_usage): Document it.

	* prind.c (bow_print_word_scores): Define new global variable.
	(_bow_score_prind_from_wv): Use it to decide when to print
	per-word/class score information.
	* libbow.h (bow_print_word_scores): Declare new global variable.

Fri Jan 17 09:39:30 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow.c (printing_class): Global variable renamed from
 	weight_vector_printing_class.
	(rainbow_print_foilgain): New function.
	(main): Call it, and add -F option for doing so.
	(rainbow_print_usage): Document it.

	* vpc.c (bow_barrel_new_vpc_with_weights): Use new foilgain
 	function for PrInd, instead of infogain function.

	* info_gain.c (bow_barrel_scale_weights_by_info_gain): Set max_wi!
  	Previously it was uninitialized.
	(bow_foilgain_per_wi_ci_new): New function.
	(bow_foilgain_free): New function.
	(bow_barrel_scale_weights_by_foilgain): New function.
	* libbow.h: Declare new foilgain functions.

	* docnames.c (bow_map_filenames_from_dir): Add assertion that
 	checks for conditions under which directory-vs-file detection is
 	unreliable.  I should figure out why this isn't working as
 	expected.

	* prind.c (bow_prind_scale_by_infogain): New global variable.
	* libbow.h (bow_prind_scale_by_infogain): New declared global
 	varible.
	* rainbow.c (main): Add -G for setting
 	bow_prind_scale_by_infogain.
	* vpc.c (bow_barrel_new_vpc_with_weights): Use
 	BOW_PRIND_SCALE_BY_INFOGAIN.

	* rainbow.c (rainbow_query): Only re-build the
 	RAINBOW_CLASS_BARREL if -m or -T arguments require its change.

Thu Jan 16 13:35:31 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* vpc.c (bow_barrel_new_vpc_with_weights): For PrInd, scale
 	weights by information gain.  (Oooh, this may not be kosher;
 	perhaps remove it later.)

	* rainbow.c (rainbow_print_weight_vector): Multiply the weight by
 	its normalizer.

	* info_gain.c (bow_barrel_scale_weights_by_info_gain): Leave more
 	space for verbosifying progress, because the numbers are big.

	* prind.c (_bow_barrel_set_prind_weights): Remove the information
 	gain scaling, i.e. undo previous change.

	* info_gain.c (bow_barrel_scale_weights_by_info_gain): Change the
 	arguments so that the information gain array is passed in, not
 	calculated inside the function.
	* libbow.h: Change arguments to weight info gain scaling function.

	* naivebayes.c (_bow_score_naivebayes_from_wv): Scale DV WEIGHT by
 	CDOC NORMALIZER!

	* prind.c (_bow_score_prind_from_wv): Scale DV WEIGHT by CDOC
 	NORMALIZER!

	* rainbow.c (rainbow_query): If score is less than 1e-35, then
 	just print zero.  Do this for the sake of CommonLisp, which can't
 	read numbers smaller than 1e-35.
	(rainbow_test): Likewise.
	(rainbow_test_files): Likewise.

Wed Jan 15 10:52:13 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* scan.c (bow_scan_fp_for_string): Change the for() to a while()
 	to clean up the handling of STRING_PTR incrementation.

	* rainbow.c (method): Fix its handling from last change.
	(rainbow_print_weight_vector): New function.
	(main): Call it.
	(rainbow_print_usage): Add -W.

	* prind.c (_bow_barrel_set_prind_weights): Added comment.

	* lex-simple.c (bow_lexer_simple_get_raw_word): Back up
 	DOCUMENT_POSITION to point at terminating character.  Add more
 	comments.

	* int4str.c (_str_hash_lookup): Add assertion.
	(_str_hash_add): Add assertions.
	(bow_str2int): Increment MAP->STR_ARRAY_LENGTH++ first, then return -1
	the value, instead of returning the value++.  This makes the
 	intermediate calls more clear and safe.

	* barrel.c (bow_barrel_keep_top_words_by_infogain): Improve
 	verbosity and reduce number of times printed.

	* lex-simple.c (bow_lexer_simple_open_text_fp): When checking to
 	see if we should realloc to increase the DOCUMENT buffer size,
 	make sure we leave room for the terminating '\0' that we'll add
 	later in the function!  (Wow!  This was a wild bug that's been
 	around for a while, but only recently caused occasional crashes.
  	The crashes were in totally unrelated functions in int4str.c.  The
 	GDB `watch' command came to the rescue!)

	* scan.c (bow_scan_fp_for_string): Make it ignore Carriage-Return
 	'\r' characters, so we can reliably scan for MIME header
 	separators.

	* barrel.c (bow_barrel_keep_top_words_by_infogain): Make it more
 	efficient by using qsort().

	* rainbow.c (method): Initialize to -1.
	(DEFAULT_METHOD): New macro, equal to bow_method_naivebayes.
	(rainbow_index): Use new macro.
	(rainbow_query): Cause `-m' to have an effect here.
	(rainbow_test): Likewise.
	(rainbow_test_files): Likewise.
	(rainbow_print_usage): Rearrange flags to reflect new contexts in
	which -T, -m, and -U are valid.
	(main): Don't use the length of argv[0] to determine value of
	BOW_VERBOSITY_USE_BACKSPACE.

Tue Jan 14 09:35:20 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* prind.m: Comment fixes.

	* rainbow.c (test_percentage): Initialize it to 0, not 30.
	(DEFAULT_TEST_PERCENTAGE): New macro, equal to 30.
	(rainbow_test): Set TEST_PERCENTAGE to DEFAULT_TEST_PERCENTAGE if its
	zero.  Set RAINBOW_CLASS_BARREL->METHOD to METHOD so we can give
 	the -m option when using -t.
	(rainbow_test_files): Use TEST_PERCENTAGE and NUM_TEST_DOCS to
	determine how many training examples to ignore.  Set
 	RAINBOW_CLASS_BARREL->METHOD to METHOD so we can give the -m
 	option when using -t.

	* dv.c (bow_dv_add_di_count_weight): Add parens around MAXSHORT,
 	which seems to be needed on SunOS.

	* dv.c (_bow_dv_index_for_di): Reverse direction of for()-loop
 	that scoots document entries up to make room!  (Reported by Kamal
	Nigam.)

	* wi2dvf.c (bow_wi2dvf_dv): Gracefully handle arithmetic overflow
 	of in COUNT.  Print a warning the first time it happens.

	* rainbow.c (rainbow_test_files): Close the FP in the nested
 	function TEST_FILE!  Append "/" to the DIR.  Use
 	FILENAME_TO_CLASSNAME when setting CURRENT_CLASS.
	(main): Add 'x' to the getopt call.

	* configure.in: Look for perl5 before looking for perl.

Mon Jan 13 09:51:32 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow.c (rainbow_test_files): New function.
	(main): Added local variable WHAT_DOING; use it.  Add command-line
	option -x; call rainbow_test_files.  Add command-line option -b.

	* lex-html.c: Use bow_verbose, instead of bow_quiet to print
	message about unterminated `<'.

	* docnames.c (bow_map_filenames_from_dir): Make it work even when
 	DIRNAME is actually a filename.

Sun Jan 12 12:37:32 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow.c (filename_to_classname): Make it work even when there
 	isn't a `/' in the FILENAME.
	(rainbow_index): Use filename_to_classname().

	* install.texi: Mention the need for GNU make.
	Add missing @@end enumerate.

	* Makefile.in (default): Make it depend on all the
 	DEMO_EXECUTABLES and the PERL_RUNNABLE_FILES, instead of just
 	rainbow.

	* libbow.h: Update copyright.

	* primes.c (_bow_nextprime): Replace bzero by memset, for SunOS.

	* prind.c (_bow_barrel_set_prind_weights): Remove warning about
 	old do-nothing loop.  Remove the loop.

	* rainbow.c (rainbow_query): Set NUM_HITS_TO_SHOW equal to the
 	number of classes, instead of just 2.  Simplify output so it is
 	more machine readable.
	(main): Require a length of 39, not 10, for argv[0] in order to turn
	off BOW_VERBOSITY_USE_BACKSPACE.  (This was a hack so we don't get
 	a lot of \b's inside gdb inside emacs.)  Fix the getopt string to
 	include a `:' after `v'.

	* Makefile.in (snapshot): cvs tag the repository.

	* rainbow.c: Deal with systems that don't have getopt.h.

	* weight.c (_bow_add_to_normalizer_total): Add case for
 	BOW_METHOD_PRIND.
	(_bow_total_to_normalizer): Likewise.

Sat Jan 11 17:57:16 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* arrow.c: Fix typo in last change.

Fri Jan 10 11:03:51 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* configure.in: Look for getopt.h.

	* arrow.c: Deal with systems that don't have getopt.h.

	* rainbow-stats.pl (overall_accuracy): Print stderr for both
 	verbosity levels!

Thu Jan  9 11:46:41 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow-stats.pl (overall_accuracy): Print standard error, not
 	standard deviation.

Wed Jan  8 11:19:13 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* info_gain.c (bow_infogain_per_wi_new): Assert info gain is >= 0,
 	not > 0.
	* barrel.c (bow_barrel_keep_top_words_by_infogain): Likewise.

	* rainbow.c (rainbow_index): Rearrange
 	REUSE_ARCHIVED_BARREL_COUNTS logic so it works now.

	* vpc.c (bow_barrel_new_vpc): Don't assert DV, just continue if
 	it's NULL.

Tue Jan  7 09:45:54 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* libbow.h: Declare new barrel info gain function.

Mon Jan  6 10:28:17 1997  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* barrel.c (bow_barrel_keep_top_words_by_infogain): New function. 

	* lex-gram.c (bow_lexer_gram_open_text_fp): Return NULL if LEX is
	NULL. 

	* wi2dvf.c (bow_wi2dvf_remove_wi): New function.
	(bow_wi2dvf_write): Use new SEEK_START convention, in which it is
	-1 when DV is NULL; previously, when DV was NULL, it was equal to
	the previous SEEK_START.
	(bow_wi2dvf_new_from_data_fp): Likewise.
	* libbow.h:  Declare new wi2dvf function.

	* rainbow.c, weight.c, vpc.c, score.c, libbow.h: Separate
	PrTFIDF from PrInd (Fuhr's Probabilistic Indexing).
	* prind.c: New file, for Fuhr's Probabilistic Indexing method.

	* rainbow.c (rainbow_index): Prune words by info gain in barrel,
 	not in the word vocabulary, so that `-L' can work properly.

Fri Jan  3 12:56:53 1997  Andrew McCallum  <mccallum@@pad>

	* rainbow.c (main): Add the -L option, for turning off lexing the
 	text files, and instead using the word counts in the archived
 	barrel.
	(rainbow_print_usage): Likewise.
	(reuse_archived_barrel_counts): New global variable, controlling this.

	* lex-html.c (bow_lexer_html_get_word): Change type of argument
 	SELF to match BOW_LEXER.

	* rainbow.c (main): Add the -s option, for turning off use of the
 	stoplist.
	(rainbow_print_usage): Likewise.

	* rainbow.c (main): Add the -U option, for turning off uniform
 	priors in PrTFIDF.
	(rainbow_print_usage): Likewise.

	* rainbow-stats.pl: Add test of $#ARGV to the `-s' test, so it
 	actually works the way it's supposed to.

Wed Jan  1 16:54:28 1997  Andrew McCallum  <mccallum@@pad>

	* lex-html.c (bow_lexer_html_get_raw_word): Print warning when we
 	find an unterminated open bracket `<'.  Verbosify about close
 	bracket warning with priority of BOW_VERBOSE, not BOW_PROGRESS.

	`rainbow -i -H -S' now seems to be working.

	* rainbow.c (rainbow_underlying_lexer): New global variable.
	(rainbow_html_lexer): New global variable.
	(rainbow_print_usage): Overhauled to accurately describe the valid
	arguments.
	(main): Rearrange and clean up argument handling.

	* libbow.h: Change type of argument SELF in BOW_LEXER_SIMPLE
 	word-getting subfunctions.

	* lex-simple.c (bow_lexer_simple_open_text_fp): Deal with EOF in
 	FP.  Deal with zero-length documents.  After we find END_PATTERN,
 	move the DOCUMENT_POINTER back to the beginning of of the
 	END_PATTERN.
	(bow_lexer_simple_postprocess_word): Change type of SELF from
	BOW_LEXER to BOW_LEXER_SIMPLE.
	(old_bow_lexer_simple_get_word): Old, unused function removed.

	* lex-html.c (bow_lexer_html_get_raw_word): Keep a count of the
 	HTML bracket nestings, instead of keeping track as a boolean.
	(bow_lexer_html_get_word): Postprocess word using the underlying
	lexer from SELF, not SELF itself.

Tue Dec 31 12:36:21 1996  Andrew McCallum  <mccallum@@pad>

	* int4word.c (bow_num_words): If WORD_MAP has not yet been
 	created, return 0, instead of raising an error.

	* lex-html.c (bow_lexer_html_get_raw_word): Look for end by
 	comparing to 0, not EOF.  Fix termination condition of
 	true-to-start loop.  Change type of SELF to BOW_LEXER_SIMPLE from
 	BOW_LEXER.
	(bow_lexer_html_get_word): Change type of SELF to BOW_LEXER_INDIRECT
	from BOW_LEXER.

	* lex-simple.c (bow_lexer_simple_get_raw_word): Look for end by
 	comparing to 0, not EOF!

	* libbow.h (bow_str2method): Add "tfidf" as a synonym for
 	tfidf_log_occur.

	* rainbow-stats.pl: Now the `-s' argument causes it to print only
 	accuracy average and standard deviation.
	(verbosity): New variable.

Mon Dec 30 15:34:25 1996  Andrew McCallum  <mccallum@@pad>

	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): Loop over all documents
 	(LEX's) in the file.
	* int4word.c (bow_words_add_occurrences_from_text_dir): Likewise.

	* wv.c (bow_wv_new_from_lex): New function.
	(bow_wv_new_from_text_fp): Use it.  Handle NULL lex.
	* libbow.h: Declare new WV function.

	* lex-simple.c: Remove the N-gram lexer.
	* lex-gram.c: lex-indirect.c, lex-html.c: New files.
	* Makefile.in (LIBBOW_C_FILES): Added lex-gram.c, lex-html.c,
 	lex-indirect.c.
	* libbow.h: Declare new lexer functions, types and variables.

Sun Dec 29 13:04:17 1996  Andrew McCallum  <mccallum@@pad>

	* lex-simple.c: Make all the instances of BOW_LEXER use a NULL
 	DOCUMENT_END_PATTERN.
	(bow_lexer_simple_open_text_fp): Instead of scanning the FP twice,
	have it fill and grow the document buffer as it reads the FP for
 	the first time.  (This now seems to work on STDIN, although I
 	haven't tried non-NULL DOCUMENT_END_PATTERN's with it; I'm not
 	sure if FSEEK works on STDIN.)

	* libbow.h (bow_lexer): Comment the start and end patterns.

	* scan.c (bow_scan_fp_for_string): If STRING is the empty string,
 	return immediately instead of scanning to EOF.  The NULL string
 	still scans to EOF.

Fri Dec 27 20:00:30 1996  Andrew McCallum  <mccallum@@pad>

	The changes for the new lexer.  It now seems to be working.

	* libbow.h (bow_lex): New type, replacing BOW_PARSE.
	(bow_lexer): New type, replacing BOW_PARSER.
	(bow_lexer_simple): New type.  New lexers based on this.
	(bow_lex_gram): New type.
	(bow_lexer_gram): New type.
	(bow_default_lexer): Renamed from BOW_DEFAULT_PARSER.
	(bow_stem_porter): Renamed from BOW_STEM.
	(bow_isalpha): New function declaration.
	(bow_isgraph): Likewise.

	* Makefile.in (LIBBOW_C_FILES): Remove p-alpha.c, p-alonly.c,
 	p-gram.c, p-white.c.  Add lex-simple.c.
	(DEMO_C_FILES): Remove robin.c.

	* defparser.c (bow_default_lexer): Renamed from
 	BOW_DEFAULT_PARSER.

	* int4word.c (bow_words_add_occurrences_from_text_dir): Use new 
	lexer instead of old parser.
	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): Likewise.
	* wv.c (bow_wv_new_from_text_fp): Likewise.

	* rainbow.c (rainbow_lexer): New global variable.
	(main): Use new lexer instead of old parser.  Using BOW_ALPHA_LEXER
	as the underlying lexer instead of the old BOW_ALPHA_ONLY_PARSER.

	* stem.c (bow_stem_porter): Renamed from BOW_STEM.

	* lex-simple.c: New file.

	* scan.c (bow_scan_fp_for_string): If STRING is NULL or
 	zero-length, then instead of immediately returning zero, scan
 	through the FP until EOF.

Thu Dec 26 12:20:44 1996  Andrew McCallum  <mccallum@@pad>

	The last version before the many `lexer' changes.

	* int4word.c (bow_words_write): Write the WORD_MAP_COUNTS also.
	(bow_words_read_from_fp): Read and create them.

	* dv.c (bow_dv_add_di_count_weight): Assert that the new count is
 	greater than zero.
	* prtfidf.c (_bow_barrel_set_prtfidf_weights): Assert that DV->IDF
 	is greater than zero.

Tue Dec 24 17:36:09 1996  Andrew McCallum  <mccallum@@pad>

	* rainbow-stats.pl (calculate_accuracy): Use printf and %g instead
 	of print.
	(overall_accuracy): Calculate and print standard deviation also.

	* rainbow.c (main): Use BOW_GRAM_PARSER_PARSER.

	* p-gram.c (bow_gram_parser_parser): New global variable.
	(bow_gram_parser_open_text_fp): Set it to BOW_DEFAULT_PARSER if it's
	NULL.  Use it.
	(bow_gram_parser_close): Use it.
	(bow_gram_parser_get_word): Likewise.
	* libbow.h: Declare BOW_GRAM_PARSER_PARSER.

	* prtfidf.c (bow_prtfidf_uniform_priors): New global variable.
	Default is to use *uniform* class prior probabilities.
	(_bow_barrel_set_prtfidf_weights): Don't set the DV->IDF here, we'll
	use its current value later.
	(_bow_score_prtfidf_from_wv): Move the test for !DV.  Pay attention to
	BOW_PRTFIDF_UNIFORM_PRIORS, and do the right thing.

Sun Dec 22 13:35:03 1996  Andrew McCallum  <mccallum@@pad>

	* .cvsignore: Added executables arrow, robin, rainbow-stats.

	* Makefile.in (INSTALL_FILES): New variable.
	(install): Use it.  Fix removing of old executables.  Install Perl
	files. 

	* libbow.h (bow_str2method): New macro.
	(bow_words_keep_top_by_infogain): Declare function.
	* int4word.c: Add comment.

	* rainbow.c (rainbow_index): Remove words with occurrences less
 	than X even if NUM_TOP_WORDS_TO_KEEP is non-zero.
	(main): New command-line argument `-R'.  Use new bow_str2method().

	* stoplist.c: Turn back on the builtin stoplist.

Fri Dec 20 15:53:50 1996  Andrew McCallum  <mccallum@@pad>

	* prtfidf.c: New file.

Tue Dec 17 18:19:55 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow.c (main): Added prtfidf for `-m'.

	* score.c (bow_get_best_matches): Do the right thing for prtfidf,
 	call _bow_score_prtfidf_from_wv.

	* stoplist.c (init_stopwords): Temporarily turn off the builtin
 	stoplist, for use with the demo data.  Yipes, this needs to
 	be turned back on!

	* vpc.c (bow_barrel_new_vpc): Do the right thing for prtfidf;
 	treat it like naivebayes.
	(bow_barrel_new_vpc_with_weights): Likewise.

	* weight.c (bow_barrel_set_weights): Call
 	_bow_barrel_set_prtfidf_weights when appropriate.

	* Makefile.in (LIBBOW_C_FILES): Added prtfidf.c.

Mon Dec 16 13:11:59 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* arrow.c (arrow_unarchive): Add verbosification.
	* info_gain.c (bow_infogain_per_wi_new): Fix verbosification.
	* info_gain.c (bow_infogain_per_wi_new): Add verbosifying.

	* rainbow.c (num_top_words_to_keep): Set to zero as a default.
	(rainbow_index): Make it possible to call both occurrence pruning and
	infogain pruning.
	(main): New command-line argument `-m'.

	* vpc.c (bow_barrel_new_vpc_with_weights): Create the VPC barrel,
 	and then normalize the weights, otherwise we get -1 normalizers!
	* score.c (bow_get_best_matches): Delete more leftover naivebayes
 	code.  Assert that the normalizer is greater than 1.

	* rainbow.c (num_top_words_to_keep): New global variable set from
 	command line.
	(rainbow_index): New nest function DO_INDEXING.  Use it.  Add term
	pruning according to information gain.
	(main): New command line argument `-T' to set num top words.

	* robin.c (robin_index): Do the right thing when WI is -1.
	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): Likewise.
	* wv.c (bow_wv_new_from_text_fp): Likewise.

	* int4word.c (bow_words_keep_top_by_infogain): Implemented.
	(bow_words_add_occurrences_from_text_dir): Do the right thing when WI
	is -1.

	* info_gain.c (bow_infogain_per_wi_new): Set info gain to 0 when
 	the DV for that word NULL.

	* barrel.c (bow_barrel_new): Add new argument.  Separate
 	capacities for the cdocs array and the wi2dvf.
	* libbow.h: Declare new argument in bow_barrel_new.
	* arrow.c (arrow_index): Use new extra argument to barrel_new.
	* vpc.c (bow_barrel_new_vpc): Use new extra argument to
 	barrel_new.

	* naivebayes.c (_bow_score_naivebayes_from_wv): Removed ununsed
 	local variable.

Wed Dec 11 15:19:44 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* Makefile.in (diff): Ignore the non-zero exit status from `diff'.

	* Makefile.in (dist): Call cvs rtag.
	(diff): New target.
	(clean): Delete *.info and *.dvi.
	(maintainer-clean): Delete $(PERL_RUNNABLE_FILES), configure, README,
	and INSTALL.

	* int4word.c (bow_words_keep_top_by_infogain): New function; not
 	yet implemented.

	* naivebayes.c (_bow_score_naivebayes_from_wv): Incoporate P(w|C)
 	for all words in query document, not just those in the DV.

	* rainbow.c: Added more comments.
	(rainbow_wi2dvf_sum_classes): Function removed.

	* Version (BOW_MINOR_VERSION): Version 0.5.
	* libbow.h (BOW_MINOR_VERSION): Likewise.
	This version given to Kamal.

Tue Dec 10 20:22:29 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* rainbow-stats.pl: New file.  Changed from Sean's version to
	include scientific notation in number regular expression.

	Naive-Bayes code runs without crashing, but it provides horrible
	results on the CIA type data.  Average accuracy of 7%.  It almost
	always chooses Defense_Forces.

	* naivebayes.c (_bow_barrel_set_naivebayes_weights): Rewrite from
 	scratch, avoiding the use of heaps.

	* libbow.h: Include <limits.h>, so we get PATH_MAX.

	* naivebayes.c: New file.
	* Makefile.in (LIBBOW_C_FILES): Added naivebayes.c.
	* weight.c: Remove the NaiveBayes code to naivebayes.c.
	* score.c (bow_get_best_matches): Likewise.
	* vpc.c (bow_barrel_new_vpc): Remove the NaiveBayes prior-setting
 	to naivebayes.c.

	* rainbow.c: Remove the commented-out pre-vpc code.  Change the
 	default method to naivebayes.

Mon Dec  9 10:11:05 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	CIA type data shows performance improvement from 1-grams to
	1/2-grams: 79% to 68% accuracy.
	
	* wi2dvf.c (bow_wi2dvf_dv): Fix assertion for when doing the last WI.

	* vpc.c (bow_barrel_new_vpc): Verbosify and fix off-by-one error
 	in class index handling.

	* rainbow.c (rainbow_classnames): New global variable.
	(rainbow_unarchive): Set it.
	(rainbow_index): Verbosify while we read files for word pruning.

	* libbow.h (PATH_MAX): Avoid warning in surrounding #if.
	(bow_fopen): Use perror() as well as bow_error.

	* int4word.c (bow_words_add_occurrences_from_text_dir): Keep track
 	of the text file count, and verbosify.

	* barrel.c (bow_barrel_new): Create the new wi2dvf with
 	bow_num_words(), not CAPACITY.
	(_bow_barrel_cdoc_free): Only free FILENAME if it's non-NULL.

	* array.c (bow_array_entry_at_index): Fix off-by-one error in
 	assertion.

	* rainbow.c: Make it work with new vpc function, but old code is
 	still there commented-out.

	* libbow.h: Declare new vpc and infogain functions.

	* info_gain.c: Comment new functions.

	* score.c (bow_get_best_matches): Add code to do NaiveBayes;
 	thanks to Dunja, who helped.

	* vpc.c (bow_barrel_new_vpc): Totally rewritten.  Now simpler and
 	faster.  Don't create a dv_heap, just go through the wi2dvf by
 	words.
	(bow_barrel_new_vpc_with_weights): New function.

	* weight.c (_bow_barrel_set_weights_naivebayes): Renamed from
 	_bow_barrel_set_weights_sans_idf.  Verify that the class priors
 	are set.
	(bow_barrel_set_weights): Use new function name.

	* split.c (drand48, srand48) [__sun__]: Add prototypes.

Fri Dec  6 17:57:46 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* wi2dvf.c (bow_wi2dvf_print_stats): Don't use //-style comments.
	* weight.c (bow_barrel_set_weight_normalizers): Likewise.

	* libbow.h: Add inclusions and declarations needed for SunOS;
 	thanks to Sean.

	* rainbow.c (prune_words_with_occurrences_less_than): New global
 	variable.
	(rainbow_index): Use it.
	(rainbow_query): Set and normalize the QUERY_WV weights!
	(rainbow_test): Likewise.

	* dv.c (bow_dv_default_capacity): Value changed from 4 to 2, in an
 	effort to reduce memory use.

	* email.c (bow_email_get_replyid): Don't insist that the opening
 	`<' is on the same line as "In-Reply-To:".

	* int4word.c (word_map_counts, word_map_counts_size): New static
 	variables.
	(bow_word2int_do_not_add): New static variable.
	(_bow_int4word_initialize): New function.
	(bow_word2int): Use it.  Pay attention to bow_word2int_do_not_add.
	(bow_words_set_map): New function.
	(bow_word2int_add_occurrence): New function.
	(bow_words_occurrences_for_wi): New function.
	(bow_words_remove_occurrences_less_than): New function.
	(bow_words_add_occurrences_from_text_dir): New function.

	* libbow.h: Declare new bow_words_ functions.

	* robin.c (robin_index): Use new function
 	bow_word2int_add_occurrence().

	* weight.c (bow_barrel_set_weight_normalizers): Free the heap
 	before returning!

	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): Use new function
 	bow_word2int_add_occurrence().

	* wv.c (bow_wv_new): Initialze normalizer to 1.
	(bow_wv_new_from_text_fp): Likewise.
	(bow_wv_new_from_text_fp): Use new bow_word2int_add_occurrence().

Thu Dec  5 09:49:46 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* score.c (bow_get_best_matches): Make sure QUERY_WV->NORMALIZER
 	is non-zero.
	* weight.c (bow_wv_set_weight_normalizer): Make sure TOTAL is
 	non-zero.

	* rainbow.c: Include <errno.h> for DEC Alpha's.
	* arrow.c: Likewise.

Wed Dec  4 10:44:52 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* Makefile.in (PERL): New variable.
	(LIBBOW_C_FILES): Added p-gram.c.
	(PERL_FILES): New variable.
	(PERL_RUNNABLE_FILES): New variable.
	(DIST_FILES): Added PERL_FILES.
	(all): Add dependancy on PERL_RUNNABLE_FILES.
	(PERL_RUNNABLE_FILES): New rule.
	* configure.in: Look for perl in path.

	* rainbow.c (infogain_words_to_print): New global variable, set by
 	command-line arguments.
	(main): Set BOW_DEFAULT_PARSER to BOW_GRAM_PARSER; set
	BOW_GRAM_PARSER_GRAM_SIZE to 1.  New command line options, -g, -I,
 	-h.  Call BOW_INFOGAIN_PER_WI_PRINT.

	* info_gain.c (bow_infogain_per_wi_new): New function.
	(bow_infogain_per_wi_print): New function.
	(bow_barrel_scale_by_info_gain): Use new function above.

	* p-gram.c: New file.
	* libbow.h (bow_parser_skip_net_header): Declare new global
 	variable.
	(bow_gram_parser): Declare new parser struct.
	(bow_gram_parser_gram_size): Declare new global variable.
	* defparser.c (bow_parser_skip_net_header): Define and initialize
 	to 0.
	* p.inc (BOW_P_OPEN_NAME): If BOW_PARSER_SKIP_NET_HEADER is
 	non-zero, scan into the FP past the first "\n\n", in order to skip
 	over the email/news header.

Tue Dec  3 10:20:11 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* wv.c (bow_wv_count_for_wi): Use bow_wv_entry_for_wi() instead of
 	duplicating code.

	* wi2dvf.c (bow_wi2dvf_new): Initialize the FP to NULL!
	(bow_wi2dvf_dv): Assert that WI isn't larger than the WI2DVF->SIZE.
	Assert that IDF isn't NaN; twice.

	* split.c (bow_test_new_heap): Drastically simplify.
	(bow_test_next_wv): Free the old *WV if isn't non-NULL.  Use
	bow_wv_new() instead of creating it with malloc by hand.  When
 	we've reached the end of the heap, free the *WV.

	* score.c (bow_get_best_matches): Make CURRENT_SCORE a double
 	instead of a float.  Assert that IDF isn't NaN.  Don't normalize
 	the query WV.  Most important: avoid a memory leak by freeing the
 	HEAP when we are done with it!

	* rainbow.c (rainbow_wi2dvf_sum_classes): Set the class IDF from
 	the doc IDF.  Still add in the count and weight, even if the
 	weight is zero.  This means the wi2dvf will expand to the proper
 	size so we can meaningfully get DV's from it.
	(rainbow_set_weights): Don't scale by info gain.
	(rainbow_test): Initialize the QUERY_WV to NULL so bow_test_next_wv()
	will know not to free an uninitialized value.

	* heap.c (bow_dv_heap_free): New function.
	(bow_make_dv_heap_from_wv): Add assertion checking for IDF NaN.

	* dv.c (bow_dv_new_from_data_fp): Add comment about FP assertion.

	* weight.c: Assert that IDF is not NaN.  Don't print progress
 	verbosity every time through the loop---it's slowing us
 	down---only print it every 10 times through the loop.

	* dv.c (bow_dv_new): Initialize the IDF to zero!
	(bow_dv_write_size): Include the IDF size in the return value.
	(bow_dv_write): Write the IDF.
	(bow_dv_new_from_data_fp): Read the IDF.

	* rainbow.c: Keep two barrels: one for classes, one for documents.
	(num_trials, test_percentage, method): New global variables set by
	command-line switches.
	(rainbow_archive): Deal with both barrels.
	(rainbow_unarchive): Likewise.
	(rainbow_set_weights): New function...
	(rainbow_wi2dvf_sum_classes): ...using code pulled from here.
	(filename_to_classname): New function.
	(rainbow_test): New function.
	(main): Add new command line switches -t, -p.  Call rainbow_test().

	* arrow.c: Use new weight normalization functions.

	* split.c: Renamed functions to all begin with `bow_test_'.  Use
 	argument `barrel' instead of `cdoc' and `wi2dvf'.

	* weight.c: Use bow_method instead of bow_idf_type and
 	bow_normalize_type.  All functions changed.

	* score.c (bow_get_best_matches): Rename some variables.  Add
 	mechanics of NaiveBayes.  Normalize query vector.  Normalize
 	non-NaiveBayes outside the loop.

	* barrel.c (bow_barrel_new): Fix initialization of METHOD.
	(bow_barrel_add_from_text_dir): Initialize the PRIOR.
	(_bow_barrel_cdoc_write): Write the PRIOR.
	(_bow_barrel_cdoc_read): Read the PRIOR.
	(bow_barrel_new_from_data_fp): Read the METHOD properly.

	* libbow.h: Remove types as arguments to some weight functions.
  	Rename the test/train split functions.
	(bow_cdoc): Added member PRIOR.
	(bow_barrel): Added member METHOD.
	(bow_method): New enum.
	(bow_idf_type): Removed.
	(bow_normalize_type): Removed.

	* Makefile.in (LIBBOW_C_FILES): Added split.c.

	* barrel.c (bow_barrel_new): Set RET->METHOD to default of
 	BOW_METHOD_TFIDF.
	(bow_barrel_new_from_data_fp): Read METHOD.
	(bow_barrel_write): Write METHOD.

	* weight.c (_bow_add_to_normalizer_total): New function.
	(_bow_total_to_normalizer): New function.
	(bow_barrel_set_weight_normalizers): Use them.  
	(bow_wv_set_weights): Function moved here from wv.c.
	(bow_wv_set_weight_normalizer): Likewise.
	* wv.c: Weight and normalizer functions moved to weight.c.

	* libbow.h: Move the WV weight-setting functions next to the
 	barrel weight-setting functions.
	(bow_cdoc): Rename memeber LENGTH to NORMALIZER, for clarity.
	(bow_barrel_set_weight_normalizers): Renamed from
	bow_barrel_normalize_weights, since it doesn't actually change the
 	weight values.

	* wv.c: Include <math.h>
	(sqrtf): New macro.
	(bow_wv_set_normalizer): Renamed from bow_wv_set_norm().  New argument
	TYPE.  Obey new argument.
	(bow_wv_set_weights): New argument TYPE. Obey it.  Don't call the
	normalizer function.
	(bow_wv_write): Use new name WV->NORMALIZER.
	(bow_wv_new_from_data_fp): Likewise.
	* score.c (bow_get_best_matches): Use renamed NORMALIZER member.
	* barrel.c (_bow_barrel_cdoc_write): Likewise.
	(_bow_barrel_cdoc_read): Likewise.

	* libbow.h: Rename and add new arguments to WV functions.

Mon Dec  2 13:14:10 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* arrow.c (arrow_unarchive): Don't close the barrel FP, because we
 	still have yet to read the DV's from it!

	* barrel.c (bow_barrel_add_from_text_dir): Print warning if we end
 	up finding more binary files than text files.

	* score.c: Some formatting and comment changes.

	* weight.c: Some comment and variable name changes.
	(_bow_add_to_idf): Renamed from bow_add_to_total.
	(_bow_barrel_set_weights_nb): New function for doing Naive Bayes.
	(bow_barrel_set_weights): Call it if necessary.

	* libbow.h: Declare new vpc function.
	(bow_idf_nb): New idf type.
	* Makefile.in (LIBBOW_C_FILES): Added vpc.c.
	* vpc.c (bow_barrel_new_vpc): Renamed from bow_barrel2vpc_barrel.
  	Replace use of printf() with bow_verbosify().  Minor formatting
 	changes.

Mon Dec  2 13:09:10 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* vpc.c: New file - implements vector per class models. Basically,
 	take a barrel and produce a vector per class barrel from it.

Tue Nov 26 15:56:07 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* weight.c (_bow_add_to_total): Renamed to include a prefixing
 	`_'.  Declared `static inline'.
	(bow_barrel_set_weights): Overhauled and simplified.  I'm not sure
 	I haven't broken it, though.  Previously some of the `if()else'
 	clauses seemed contradictory to me.

	* score.c (bow_get_best_matches): Add comment about my perceived
 	pending need for normalization of the query vector.

	* dv.c (_bow_dv_index_for_di): Add 1 to the DV length when it was
 	zero!
	(bow_dv_add_di_count_weight): New function, replacing
	bow_dv_add_di_count.
	(bow_dv_add_di_weight): Function removed.
	* libbow.h: Declare new wi2dvf function, and remove old ones.
	* rainbow.c (rainbow_wi2dvf_sum_classes): Use new dv function.
	* wi2dvf.c (bow_wi2dvf_add_wi_di_count_weight): New function,
 	replacing bow_wi2dvf_add_wi_di_count.  Use new dv function.
	(bow_wi2dvf_add_di_wv): Use new dv function.
	(bow_wi2dvf_add_di_text_fp): Likewise.

	* Makefile.in (LIBBOW_C_FILES): Added scan.c; although this will
 	be taken away once I change parsing to use strings and librx.
	* scan.c: New file.

	* heap.c (bow_make_dv_heap_from_wi2dvf): Add silly assert()ion.

	* email.c (bow_email_get_date): Don't cause error when Date isn't
 	found, just return 0.

	* dv.c (_bow_dv_index_for_di): New function that captures the guts
 	of preparing a spot to add a count or weight.
	(bow_dv_add_di_count): Use it.
	(bow_dv_add_di_weight): Use it.

	* info_gain.c (bow_entropy): Ensure COUNTS[i] isn't zero before
 	calculating entropy.

Mon Nov 25 11:51:35 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* weight.c: Added support of bow_prtfidf weighting which gives an
 	idf = sqrt(total occurances/occurances).
	(bow_barrel_set_weights): added code to calculate the total number
 	of occurances and changed idf calculations that had those pesky
 	1.0's with the real totals intended. Doing things this way ensures
 	the weights don't go below 0.

	* score.c (bow_get_best_matches_euclidian): New function.  Gets
 	best matches badet on the euclidean distance between vectors
 	instead of the cosine of the angel between them.

	* dv.c (bow_dv_add_di_weight): Made this function capable of
 	updating weights that occur before the last element entered. It
 	assumes the documents are in the list in ascending order of their
 	indices. Should make this change to the bow_dv_add_di_count
 	function as well, but this was the minimum I needed to get vector
 	per class stuff done.

Mon Nov 18 14:17:55 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* wv.c (bow_wv_set_norm): Initialize TOTAL to zero!  It was
 	uninitialized.
	(bow_wv_write): Write the NORM!
	(bow_wv_new_from_data_fp): Read it.
	(bow_wv_write_size): Adjusted for writing NORM.

	* stoplist.c (bow_stoplist_add_from_file): Screaming verbosify
 	each word that's added.

	* heap.c (bow_make_dv_heap_from_wv): Get the DV using
 	bow_wi2dvf_dv(), not by accessing the structure directly.
  	Otherwise, we will no properly properly read in the DVF from disk.
	* weight.c (bow_barrel_set_weights): Likewise.

	* p.inc (BOW_P_GET_WORD_NAME): Also check if word is on the
 	stoplist *after* stemming.

Tue Nov  5 12:15:37 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* weight.c (bow_barrel_set_weights): Use the total number of
 	documents instead of 1.0.

Fri Nov  1 11:27:23 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* p.inc: Fix the handling of BOW_P_STOPLIST_CHECKER.

	* int4str.c (bow_int4str_new_from_fp): Make it work even for
 	strings that contain spaces, (but not newlines).
	(bow_int4str_write): Make sure the strings don't contain newlines.

	Add generalizable parsing facilities.
	* libbow.h (bow_parse, bow_parser): New types.  Add new parsing	funcs.
	(bow_get_word): Function removed.  Use new parsing facilities instead.
	* Makefile.in (DIST_FILES): Added p.inc.
	* Makefile.in (LIBBOW_C_FILES): Added p-alpha.c, p-alonly.c, p-white.c.
	* p.inc, p-alpha.c, p-alonly.c, p-white.c: New files.
	* Makefile.in (LIBBOW_C_FILES): Added defparser.c.  Removed
 	getword.c.
	* wi2dvf.c (bow_wi2dvf_add_di_text_fp): Use new parser.
	* wv.c (bow_wv_new_from_text_fp): Use new parser.

	* arrow.c (arrow_index): Use new bow_barrel_add_from_text_dir
 	function.

Thu Oct 31 15:18:49 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* Version (BOW_MINOR_VERSION): Version 0.4.
	* libbow.h (BOW_MINOR_VERSION): Version 0.4.

	* rainbow.c: Add output filename feature.  Use bow_idf_words,
 	which unlike bow_idf_log_words, seems to work.
	(rainbow_index): Scale by information gain.

	* barrel.c (bow_barrel_add_from_text_dir): Add new EXCEPT_NAME
 	argument.  Deal with NULL EXCEPT_NAME.
	* libbow.h: Add new argument to barrel function.

	* weight.c (bow_barrel_set_weights): Add prefix and postfix
 	verbosity strings.
	(bow_barrel_normalize_weights): Add verbosifying.
	* info_gain.c (bow_barrel_scale_by_info_gain): Add verbosifying.
	* barrel.c (bow_barrel_add_from_text_dir): Don't print the number
 	of "binary files".
	* rainbow.c: Added some verbosifying.

	* rainbow.c: Don't close the rainbow_barrel fp.  Set the weights
 	in the right place.  Put the indexing code in main().  Now running
	to completion.

	* dv.c (bow_dv_new_from_data_fp): Add new assertion that should
 	help us catch closed FP's.

	* docnames.c (bow_map_verbosity_level): New global variable.
	(bow_map_filenames_from_dir): Use it.

	* barrel.c (bow_barrel_add_from_text_dir): Renamed from
 	bow_barrel_new_from_text_dir.  Don't create a new barrel, just add
 	to a pre-existing one.
	* libbow.h: Declare renamed function.

	* libbow.h (bow_fwrite_string): Handle the NULL string for
 	argument S.
	(bow_fread_string): Match bow_fwrite_string handling of NULL.

Mon Oct 28 12:03:11 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* info_gain.c (bow_barrel_scale_by_info_gain): Renamed from
 	bow_wi2dvf_scale_by_info_gain.
	* libbow.h: Rename info gain function to use `barrel'.

	* rainbow.c: Totally rewritten to be a document classifier.

	* wi2dvf.c (bow_wi2dvf_add_di_wv): Increase wi2dvf size with a
 	MAX(), so we are guaranteed to be big enough.
	(bow_wi2dvf_add_wi_di_count): Likewise.
	(bow_wi2dvf_add_wi_di_weight): Likewise.
	(bow_wi2dvf_write): Incorporate initial seek position into
	calculations, in case we are writing to a file that already has
 	other stuff at the beginning.

	* barrel.c (bow_barrel_free): New function.
	(bow_barrel_new_from_text_dir): Print shorter verbosity.
	* libbow.h: Declare bow_barrel_free().

	* arrow.c (arrow_index): Set the weights.
	(main): Raise error if no text documents found.

	* libbow.h: Declare bow_barrel_new(), and fix typo.

	* wi2dvf.c (bow_wi2dvf_add_wi_di_weight): New function.
	* libbow.h: Declare new wi2dvf function.

	* dv.c (bow_dv_add_di_weight): New function.
	* libbow.h: Declare new dv function.

	* weight.c (bow_barrel_set_weights): Renamed from
 	bow_wi2dvf_set_weights.
	(bow_barrel_normalize_weights): Renamed from
	bow_wi2dvf_normalize_weights.
	* libbow.h: Rename weight functions to use `barrel'.

	* barrel.c (bow_barrel_new_from_text_dir): Take new CLASS
 	argument.  Set the `class' of the new cdoc's accordingly.
	* libbow.h: Add new argument to barrel function.

Fri Oct 25 13:05:16 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* arrow.c (main): Create the data directory if it doesn't exist
 	already.

	* Version (BOW_MINOR_VERSION): Version 0.3.

	* sarray.c (bow_sarray_new_from_data_fp): Renamed from
 	bow_sarray_new_from_fp.
	* libbow.h: Rename sarray function.

	* Makefile.in (version.texi): Use renamed BOW_ variables.
	(libbow.h): New target with rules that keep it up to date with
	./Version.
	* libbow.h (BOW_MAJOR_VERSION): New macro.
	(BOW_MINOR_VERSION): New macro.
	(BOW_VERSION): New macro.
	* Version (BOW_MAJOR_VERSION): New variable.
	(BOW_MINOR_VERSION): New variable.
	(BOW_VERSION): Use them; renamed from LIBBOW_VERSION.

	* arrow.c: New file.
	* Makefile.in (DEMO_C_FILES): Added arrow.c.

	* barrel.c: New file.
	* libbow.h: Declare barrel archiving functions.

	* stoplist.c (bow_stoplist_add_from_file): Add a verbosify
 	message.

Wed Oct 23 16:45:46 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* libbow.h (bow_barrel): New type.  Use it in all places where a
 	WI2DVF and CDOCS were used together; several function arguments
 	changed.
	* wi2dvf.c (bow_wi2dvf_new_from_text_dir): Function removed.
  	Similar function is now in barrel.c.
	* weight.c (bow_wi2dvf_set_weights): Use bow_barrel.
	(bow_wi2dvf_normalize_weights): Likewise.
	* score.c (bow_get_best_matches): Use bow_barrel.
	* info_gain.c (bow_wi2dvf_scale_by_info_gain): Use new bow_barrel
 	type.
	* Makefile.in (LIBBOW_C_FILES): Add barrel.c.

	* array.c (bow_array_new_from_data_fp): Renamed from
 	bow_array_new_from_fp.
	* sarray.c (bow_sarray_new_from_fp): Use renamed function
 	bow_array_new_from_data_fp.

Tue Oct 22 14:03:38 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* email.c (_scan_fp_for_string): Make `\n' at the beginning of the
 	search string match the beginning of the file.

	* error.c (_bow_error) [__linux__]: Call abort() instead of exit()
 	because it lets us find ourselves in GDB.  Still don't do it for
 	non-Linux systems, because apparently on other systems there was a
 	problem with flushing stderr when calling abort().

	* docnames.c (bow_map_filenames_from_dir): Don't verbosify the
 	directory names if we're not BOW_VERBOSITY_USE_BACKSPACE.

	* email.c: To several functions add new argument that negates
 	test, or that insists on a search all on one line.
	(_bow_email_get_email_address): New function.
	(bow_email_get_sender): New function.
	(bow_email_get_recipient): New function.
	(bow_email_get_date): New function.
	* libbow.h: Declare new email functions.

Mon Oct 21 12:08:45 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* libbow.h (bow_parse_news_headers): Add missing semi-colon to
 	declaration.

	* info_gain.c (bow_entropy): Get the "document vector" with
 	bow_wi2dvf_dv(), not by following the pointer directly.
  	Otherwise, we won't properly read the DV in from the file, and may
 	get inappropriate NULLs.

	* Makefile.in (LIBBOW_C_FILES): Add info_gain.c.

	* HACKING: Correct directions for checking out bow from CVS.

Sat Oct 19 00:49:08 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* news.c: Function for parsing news article headers. Useful for looking
	for crosspostings for multiple classifications.
	(bow_parse_news_headers): Added a getc to dump the first whitespace
	character after the : proceeding the header
	(bow_headers2newsgroups): New function to grok the bow_sarray returned
	by bow_parse_new_headers and return a bow_array of strings 
	corresponding to every newsgroup mentioned in the newsgroup line.
	* libbow.h: Added def'n for new function

	* libbow.h: Added bow_parse_news_headers

Fri Oct 18 10:50:23 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* info_gain.c (log2f): #define it if ./configure determined that
 	we don't have it.
	(bow_entropy): Use log2f instead of log2.
	(MIN): Macro removed.  It's now in libbow.h.

Fri Oct 18 21:32:42 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* array.c (bow_array_append): Changed test from array->length > 
	array->size to array->length >= array->size. When array->length = 
	array->size, we're run out of space.
	(bow_array_init): Assigned array->free_func to free_func. Otherwise
	free_func is not initialised and the bow_array_free function will
	sometimes crash.

Fri Oct 18 10:50:23 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* libbow.h: Declare new functions.
	(bow_wv): LENGTH entry renamed to NORM.

	* wv.c (bow_wv_set_norm): New function.
	(bow_wv_set_weights): New function.

	* error.c (_bow_error): Call exit(-1) instead of abort().  It
	makes a prettier error message on the console.

	* heap.c (bow_make_dv_heap_from_wi2dvf): Separate the index into
 	words and index into the heap so that we can handle wi2dvf's that
 	have some NULL "document vectors".

	* libbow.h (MIN): New macro.
	(MAX): New macro.
	(bow_verbosity_use_backspace): New global variable declaration.
	* error.c (bow_verbosity_use_backspace): New global variable.
	(bow_verbosify): Use it.
	* weight.c (MIN): Remove definition. It's now in libbow.h.

	* libbow.h (bow_wi2dvf_normalize_weights): Change from `normalise'
 	to American spelling.  The *.c file had already been changed.

Fri Oct 18 01:15:57 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* info_gain.c (bow_wi2dvf_scale_by_info_gain): New file,
	information gain routine.
	(bow_entropy): Cast some of the arithmitic to floats - dividing one 
	integer by another tends to go to 0 here.
	* libbow.h: added definition for above.
 
	* split.c: (bow_next_test_wv) Free heap when we've exhausted the
 	test set (for tidyness)

	* heap.c (bow_make_dv_heap_from_wi2dvf): Changed malloc to
 	bow_malloc
	(bow_make_dv_heap_from_wv): Changed malloc to bow_malloc

Thu Oct 17 11:08:42 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* score.c (bow_get_best_matches): Add an assert()'ion that WI
 	match the word index of our current location in the word vector.

	* libbow.h: Rename local variables from num_written to num_read
 	where appropriate.

	* heap.c (bow_make_dv_heap_from_wv): Fix typo: continue when DV is
 	NULL, not the other way around.

	* wi2dvf.c (bow_wi2dvf_write): Don't close the FP at the end!  We
 	didn't open it.
	(bow_wi2dvf_new_from_data_file): Don't close the FP, it will still be
	needed to read the DV's.

	* libbow.h (bow_wi2dvf_write_data_file,
 	bow_wi2dvf_new_from_data_file): Re-add declarations for these
 	functions.

	* heap.c (bow_make_dv_heap_from_wv): WV->LENGTH is not the number
 	of entries in the word vector, it is the Euclidean length!  Change
 	all uses of WV->LENGTH to WV->NUM_ENTRIES.
	* libbow.h (bow_wv): Renamed element `length' to `total' in an
 	attempt to choose a less confusing name.  Other naming suggestions
 	welcome.

	* array.c (bow_array_new_from_fp): Set the LENGTH of the new
 	array; before it was uninitialized!

	* libbow.h (bow_fwrite_string): Properly calculate the number of
 	characters written.
	(bow_fread_string): Likewise, and parenthesis indexing of S for proper
	termination.
	(bow_idf_type): Added `bow_idf' as prefix to enum members, and removed
	`total' from end.
	* weight.c: Use new bow_idf enum names.
	(bow_wi2dvf_set_weights): Handle the case in which a document vector
	in the WI2DVF is NULL.

	* libbow.h: Include <assert.h>

	* heap.c (bow_make_dv_heap_from_wv): Make it work even when not
 	all the words in WV have document vectors in WI2DVF.  Keep
 	separate indices into the word vector and into the heap.

	* int4str.c (HEADER_STRING): New macro.
	(bow_int4str_write): Write it to the FP.
	(bow_int4str_new_from_fp): Expected it from the FP.

	* array.c (HEADER_STRING): New macro.
	(bow_array_write): Write it to the FP.
	(bow_array_new_from_fp): Expected it from the FP.

	* bmalloc.c: Remove previous contents.  Now get the functions
 	directly from libbow.h.
	* io.c: Likewise.
	* Makefile.in (io.o bmalloc.o): Indicate that they now depend
 	(completely) on libbow.h.
	* libbow.h (_BOW_MALLOC_INLINE_EXTERN): New macro for compiling
 	these extern inline functions in library .o files.
	(_BOW_IO_INLINE_EXTERN): Likewise.
	(bow_fwrite*, bow_fread): Assert the return values.

	* int4docn.c (bow_docnames_write): Take FILE* argument instead of
 	const char *.
	(bow_docnames_read_from_fp): Renamed frombow_docnames_read(), likewise
	as above.
	* libbow.h: Change argument types and function name for
 	bow_docnames archiving.
	* docnames.c (bow_map_filenames_from_dir): Use renamed
 	bow_verbosity_level enum.

	* libbow.h (bow_error): Don't print anything if
 	bow_verbosity_level indicates bow_silent.

Thu Oct 17 14:36:44 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* split.c (bow_next_test_wv): Function now takes a pointer to a pointer
	to a bow_wv. It sets this to point to a pointer to the wv it creates
	and returns the integer document index to the test document 
	described by this word vector. 
	(bow_test_split): Fixed bug in counting that meant we sometimes ended
	up with fewer test docs than asked for.
	(bow_test_split): Random number generator is now seeded with time.

	* libbow.h: (bow_next_test_wv) Argument change as above.

Wed Oct 16 08:35:45 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* libbow.h (bow_screaming): Renamed from bow_shutup_already.
  	Commented all bow_verbosity_levels.

	* wi2dvf.c (bow_wi2dvf_write_data_file): Close the FP at the end!
	(bow_wi2dvf_new_from_data_file): Likewise.
	(bow_wi2dvf_new_from_data_fp): Don't assert feof(), because there may
	be multiple things written to one file.

	* io.c (bow_fread_string): Add parenthesis in order to dereference
 	string pointer properly.

	* libbow.h: Comment changes to #include lines.
	(bow_fopen): New macro.

	* wi2dvf.c (bow_wi2dvf_new_from_data_fp): Renamed from
 	bow_wi2dvf_new_from_fp.  All callers changed.
	* libbow.h: Renamed function.

	* Makefile.in (LIBBOW_C_FILES): Added heap.c.

	* io.c (bow_fwrite_string): New function from libbow.h.
	(bow_fread_string): Likewise.

Wed Oct 16 14:03:07 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* weight.c: Checked for case total == 0 which can occur if no 
	documents in the model had this word. Without this check, we get
	a floating point error when trying to divide by total

	* score.c: (bow_get_best_matches) Added support for a bow_array of
	cdocs.

	* weight.c: Messed up loop test on outer loop - Reset it to the max_wi
	which Andrew changed it to before.

	* libbow.h: Added defs for functions in split.c

	* split.c: New file with functions for dealing with test sets.

	* weight.c: Added bow_array *cdoc arguments to
 	bow_wi2dvf_set_weights
	(so we can only do docs in the model), and to
 	bow_wi2dvf_normalize_weights where we only calculate the length of
 	docs in the model and we store the length in the corresponding
 	cdoc structure.

	* libbow.h: Added include of string.h to stop compiler complaint
	on alpha

Wed Oct 16 08:35:45 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* int4word.c (bow_words_write): Now takes FILE* argument instead
 	of filename.
	(bow_words_read_from_fp): Renamed from bow_words_read_from_file, and
	likewise as above.
	* libbow.h (bow_words_read_from_fp): Renamed from bow_words_read.

	* libbow.h: Change argument types of bow_words_write function.
	(bow_error): Enclose expansion in parenthesis, so that it parses
	properly when put inside an `else' statement without brackets.

	* wi2dvf.c (bow_wi2dvf_write): New function.
	(bow_wi2dvf_write_data_file): Use it.  This function is now deprecated.
	(bow_wi2dvf_new_from_fp): New function.
	(bow_wi2dvf_new_from_data_file): Use it.  This function deprecated.
	(bow_wi2dvf_free): New function.
	* libbow.h: Declare new functions.  Remove deprecated functions.

	* sarray.c (bow_sarray_write): New function.
	(bow_sarray_new_from_fp): New function.
	* libbow.h: Declare new functions.

	* wv.c (bow_wv_new): New function.
	(bow_wv_write_size): New function.
	(bow_wv_write): New function.
	(bow_wv_new_from_data_fp): New function.
	* libbow.h: Declare new functions.

	* weight.c (bow_wi2dvf_normalize_weights): Use renamed variable
 	wv_length.

	* array.c (bow_array_write): New function.
	(bow_array_new_from_fp): New function.
	* libbow.h: Declare new functions.

	* int4str.c (bow_int4str_write): Make second argument a FILE*
 	instead of a filename.
	(bow_int4str_new_from_fp): New function.
	* libbow.h: Declare new function.  Update argument type.

Tue Oct 15 10:07:42 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* wv.c (bow_wv_entry_for_wi): New function.
	* libbow.h: Declare new function.

	* libbow.h: Update for function name changes.
	(bow_class): New structure.

	* weight.c (bow_wi2dvf_normalize_weights): Renamed from
 	bow_normalize_word_vectors.  Minor format, comments and variable
 	name changes.

	* configure.in: Check for existance of log2f() and sqrtf()
 	functions.

	* weight.c (bow_wi2dvf_set_weights): Renamed from
 	bow_assign_tfidf_weights because it is specific to wi2dvf
 	structures, and we could imagine having a di2wvf structure in the
 	future, and because we could imagine non-TFIDF weight-setting
 	schemes.  Don't loop over all word indices up to bow_num_words(),
 	only loop up to the min of that and size of WI2DVF.  Raise an
 	error if there is an unrecognized TYPE.  Fix bow_verbosify() call.

Mon Oct 14 16:17:26 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* libbow.h: Indentation and comment fixes.

	* rainbow.c (main): Don't exit() prematurely.  Actually write the
 	data file and read it back in again.

	* wi2dvf.c (bow_wi2dvf_write_data_file): Use sizeof(int) instead
 	of sizeof(long) since it better matches reality.

	* dv.c (bow_dv_write_size): Sum short's, not int's, or else we'll
 	lie about the results of bow_dv_write.

	* getword.c (bow_get_word) [NON_ALPHA_IN_WORD]: New macro
 	selecting new code that will reject a word if it contains any
 	non-alphabetic characters.  Current default is to include this
 	code.

	* bitvec.c (bow_bitvec_new): Properly initialize all values to 0,
 	not to 1.

Fri Oct 11 17:37:28 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* bitvec.c: Finish and debug implementation.
	* libbow.h: Add bow_bitvec declarations.

	* Makefile.in (LIBBOW_C_FILES): Added bitvec.c.
	* bitvec.c: New file.

Fri Oct 11 17:14:12 1996  Sean Slattery  <jslttery@@anther.learning.cs.cmu.edu>

	* libbow.h: Resolved a conflict in bow_cdoc / bow_doc definition.

Thu Oct 10 09:44:55 1996  Andrew McCallum  <mccallum@@cs.cmu.edu>

	* stoplist.c (bow_stoplist_add_from_file): Don't raise an error if
 	we can't open the file.  This way, we can simply call the function
 	with several "guessed" filenames.
	* libbow.h: Update comment for stoplist function.

	* getword.c (bow_get_word): Delineate words by space characters
 	and non-printable characters, not by non-alphabetic characters,
 	(but still reject words with "too many" digits).  This is an
 	effort to return entire email addresses and URL's as single words.

	* stoplist.c: Totally re-written using a bow_int4str.
	(bow_stoplist_present): Renamed from bow_on_stoplist.
	(bow_stoplist_add_from_file): New function.
	* libbow.h: Declare new stoplist functions.
	* Makefile.in (LIBBOW_C_FILES): Added stopwords.c.
	* getword.c (bow_get_word): Use renamed stoplist function.

	* email.c (bow_email_get_receivedid): New function.
	* libbow.h: Declare new email functions.

	* rainbow.c (main): Use new function name
 	bow_wi2dvf_write_data_file().

	* Makefile.in ($(DEMO_EXECUTABLES):): Depend on all the
 	$(DEMO_O_FILES).