File: version-2-0.text

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	AUTOCLASS C VERSION 2.0 NOTES 
====================================================================== 
======================================================================

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

  1. autoclass-c/doc/search-c.text -
        Added new ".s-params" parameter screen_output_p, whose default
        value is true.  If false, no output is directed to the screen.
        Assuming log_file_p = true, output will be directed to the
        log file only.

  2.  autoclass-c/doc/introduction-c.text, & prediction-c.text -
        Added "prediction-c.text" to document the prediction mode of
        AutoClass C, which uses a "training" classification to predict
        probabilistic class membership for the cases of a "test" data
        file.


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

  1. autoclass-c/prog/io-results.c -
        In "read_class_DS_s", add debugging info to use with
        G_clsf_storage_log_p.

  2. autoclass-c/prog/struct-class.c -
        In "build_class_DS", add debugging info to use with
        G_clsf_storage_log_p.

  3. autoclass-c/prog/io-results-bin.c -
        In "load_class_DS_s," add debugging info to use with
        G_clsf_storage_log_p.

  4. autoclass-c/prog/struct-data.c -
        In "expand_database", to handle partial databases, read
        G_s_params_n_data.

  5. autoclass-c/prog/globals.c, globlals.h, search-control.c -
        Add G_s_params_n_data.   Change G_ac_version to 2.0 in 
        globals.c.

  6. autoclass-c/prog/io-read-data.c, autoclass.h -
        In "read_data" test on n_data was off by 1.

        In "output_created_translations" add discrete value occurrance
        count.

        In "read_data" move "output_created_translations" call to
        "output_att_statistics".

        Add "output_att_statistics" & "output_real_att_statistics".

        In "create_warn_err_ds", move malloc out of declaration.

  7. autoclass-c/prog/prints.c, autoclass.h -
        Add "sum_vector_f" for debugging.

  8. autoclass-c/prog/autoclass.c -
        Make "main" arg list conform to ANSI C.

  9. autoclass-c/prog/model-transforms.c -
        In "generate_singleton_transform", call "output_real_att_statistics"
        for each transformed attribute.

 10. autoclass-c/prog/utils.c -
        In "randomize_list" do limit check on list index.

 11. autoclass-c/prog/search-control-2.c -
        In all convergence functions, allocate mallocs in body of function,
        rather than in local variable declarations.

        In "get_search_DS", move malloc out of declaration.

 12. autoclass-c/prog/intf-reports.c -
        In "xref_get_data", use n_real_att - 1, rather than i, for index to
        real_attribute_data; and n_discrete_att - 1 for discrete_attribute_data.
        Corrects garbage output when .r-params parameter
        "xref_class_report_att_list" contains mixed real and discrete attributes.

        In "xref_class_report_attributes", use %g, rather than %f for real data.

        In "xref_output_line_by_class", handle unknown real values.

 13. autoclass-c/prog/io-read-data.c, io-results.c, io-results-bin.c,
                fcntlcom-ac.h -
        Convert binary i/o from non-standard (open/close/read/write) to
        ANSI (fopen/fclose/fread/fwrite).

 14. autoclass-c/prog/search-control.c, search-basic.c, search-control-2.c,
                utils.c, globals.c, globals.h, init.c -
        Convert from srand/rand to srand48/lrand48 for random number
        generation.

 15. autoclass-c/prog/predictions.c -
        Add this file to implement the "autoclass -predict ..." capability,
        which allows cases in a "test" data set to be applied to a
        "training" data set and have their class membership predicted.
        Use "prediction_p" and global "G_training_clsf" in "io-read-data.c"
        to force the "test" database to use the same discrete translations
        as the "training" database.

 16. autoclass-c/load-ac; autoclass-c/prog/autoclass.c, autoclass.make,
                io-results.c, & autoclass.h -
        Changes to support item 15.

 17. autoclass-c/prog/struct_data.c, struct-clsf.c, & struct-model.c -
        In "att_ds_equal_p", check for type = dummy. Remove
        "db_DS_same_source_p" and use "db_same_source_p", instead.

 18. autoclass-c/prog/search-control.c -
        Make FILE * type local variables static, since they are passed to other
        functions.

 19. autoclass-c/prog/autoclass.make -
        Compile code with "-g", rather than "-ggdb" option.

 20. autoclass-c/load-ac & autoclass-c/prog/autoclass.make.sun,
     autoclass-c/prog/autoclass.make.sgi -
        Changes to support SGI IRIX version 5.2 with "cc" compiler.

 21. autoclass-c/prog/io-read-data.c -
        In "output_warning_msgs", replaced sizeof(msg) with msg_length
        in first safe_sprintf call to prevent:
        "ERROR: vsprintf produced 80 chars (max number is 3) -- called
                by output_warning_msgs
        Program received signal SIGABRT, Aborted."

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