File: version-2-9.text

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	AUTOCLASS C VERSION 2.9 NOTES 
====================================================================== 
======================================================================

Documentation:
------------------------------

  1. autoclass-c/doc/search-c.text, reports-c.text -
        Added new parameter for both ".s-params" & ".r-params"
     files: break_on_warnings_p.  The default value asks the user 
     whether to continue or not when data definition warnings are found.
     If specified as false, then AutoClass will continue, despite 
     warnings -- the warning will continue to be output to the terminal
     and, in the case of the "-search" option, to the log file.



Programming:
------------------------------						

  1. autoclass-c/prog/globals.c -
        Update "G_ac_version" to 2.9.

  2. autoclass-c/prog/autoclass.make.solaris.cc -
         Correct compiler options for SC4.1 cc compiler

  3. autoclass-c/prog/intf-reports.c -
        In FORMAT_DISCRETE_ATTRIBUTE, correct bad test for 
     warn_errs->single_valued_warning.  This prevented "discrete"
     type attributes from being displayed in the influence values
     report, because a segmentation fault occurred.   This 
     problem was introduced in version 2.8.

  4. autoclass-c/prog/autoclass.h -
        In STRUCT I_REAL, type "last_sorted_term_n_att" as int,
     not float.

  5. autoclass-c/prog/intf-reports.c -
        In SORT_MNCN_ATTRIBUTES, type "last_sorted_term_n_att"
     as int, not float.  In PRE_FORMAT_ATTRIBUTES, revise logic for
     computing/printing the correlation matrix.  Items 4. & 5 
     correct the problem of the correlation matrix for attribute 
     type multi_multinomial_cn is only printed if it is last in
     the sorted list of attributes.

  6. autoclass-c/prog/struct-data.c -
        In EXPAND_DATABASE, make cosmetic change to an error message.

  7. autoclass-c/prog/intf-reports.c -
        In XREF_GET_DATA, validity check that .r-params file values
     of xref_class_report_att_list are in the range 0 - (number of 
     attributes - 1).  Prevents segmentation fault.
        Also in XREF_GET_DATA, correct syntax and location of
     memory free command.  Prevents segmentation fault when processing
     discrete type data.  This problem was introduced in version 2.8.

  8. autoclass-c/prog/getparams.h -
        Increased MAXPARAMS to 40.

  9. autoclass-c/prog/search-control.c, intf-reports.c -
        Added code to parse the new parameter: break_on_warnings_p.

 10. autoclass-c/prog/autoclass.h, intf-reports.c -
        Compute last_clsf_p and pass to XREF_GET_DATA, so that freeing
     of data will not be done until all clsfs have been processed.
     To take advantage of the memory reduction, only process one clsf
     and a time -- this applies only to very large data sets.



======================================================================