+2008-08-17 Jason H Stover <jhs@math.gcsu.edu>
+
+ * linreg.c (post_sweep_computations): New function to re-use the
+ re-usable. New function cache_init() to re-use the re-usable.
+ pspp_linreg_with_cov() now estimates parameters via reg_sweep().
+
+2008-08-16 Jason H Stover <jhs@math.gcsu.edu>
+
+ * linreg.c (pspp_linreg_with_cov): New function to estimate
+ parameters directly from covariance matrix instead of using the
+ entire data set.
+
+ * linreg.c (rearrange_covariance_matrix): New function to ensure
+ the columns of the covariance matrix correspond to the variables
+ in the model.
+
+2008-07-24 John Darrington <john@darrington.wattle.id.au>
+
+ * merge.c merge.h sort.c sort.h: Removed the value_cnt associated
+ with case ordering. This ensures that the casereader returned by
+ sort_execute now has the same dimensions as the casereader passed
+ in.
+
+2008-07-24 Jason H Stover <jhs@math.gcsu.edu>
+
+ * covariance-matrix.c (covariance_pass_two): Dropped weight
+ argument. Corrected update of the entries of the covariance
+ matrix.
+
+ * covariance-matrix.c (column_iterate): Dropped weight
+ argument. Corrected update of the entries of the covariance
+ matrix.
+
+ * covariance-matrix.c (covariance_update_categorical_numeric):
+ Dropped weight argument. Corrected update of the entries of the
+ covariance matrix.
+
+2008-07-17 Jason H Stover <jhs@math.gcsu.edu>
+
+ * covariance-matrix.c (covariance_update_categorical_numeric):
+ Altered to match new code in covariance_pass_two();
+
+ * covariance-matrix.h: Fix declaration of covariance_pass_two.
+
+ * covariance-matrix.c (covariance_pass_two): Moved numeric and
+ categorical scopes of V2 inside for loop. If V1 is not
+ categorical, but V2 is, recurse with the order of the variables
+ reversed to use the code in the previous "if" scope.
+
+2008-07-16 Jason Stover <jhs@math.gcsu.edu>
+
+ * covariance-matrix.c (covariance_pass_two): Renamed
+ covariance_pass_one. Fixed update of covariance matrix when both
+ variables are categorical.
+ (column_iterate): New function.
+
+2008-07-15 Jason Stover <jhs@math.gcsu.edu>
+
+ * covariance-matrix.c (covariance_pass_one): New file, new function.
+
+2008-06-21 Jason Stover <jhs@math.gcsu.edu>
+
+ * linreg.c (pspp_linreg): Accept a struct design_matrix. Use new
+ accessor functions pspp_coeff_get_mean, pspp_coeff_get_sd. New
+ functions pspp_linreg_get_indep_variable_mean,
+ pspp_linreg_set_indep_variable_mean,
+ pspp_linreg_get_indep_variable_sd,
+ pspp_linreg_set_indep_variable_sd. Altered pspp_linreg_get_coeff
+ to use accessor function pspp_coeff_var_to_coeff.
+
+ * coefficient.c: New functions pspp_coeff_get_mean,
+ pspp_coeff_set_mean, pspp_coeff_get_sd, pspp_coeff_set_sd,
+ pspp_coeff_var_to_coeff. Added doubles to hold mean and standard
+ deviation in struct varinfo.
+
+2008-06-14 Jason Stover <jhs@math.gcsu.edu>
+
+ * linreg/: moved linreg.[ch] to src/math.
+
+2008-05-15 Ben Pfaff <blp@gnu.org>
+
+ Patch #6512.
+
+ * moments.c (calc_moments): Use gsl_finite instead of finite, as a
+ stopgap measure for portability until appropriate gnulib modules
+ are available.
+
+2008-03-10 Jason Stover <jhs@math.gcsu.edu>
+
+ * coefficient.c (pspp_linreg_get_coeff): Removed use of
+ coefficient 0 as intercept.
+
+2008-03-01 Jason Stover <jhs@math.gcsu.edu>
+
+ * coefficient.c (pspp_coeff_init): Ensure first arg is not a null
+ pointer.
+
+ * coefficient.c (pspp_linreg_get_coeff): Make sure we don't return
+ a result beyond the last coefficient, or start with a coefficient
+ beyond the last one if there is only one.
+
+2007-06-06 Ben Pfaff <blp@gnu.org>
+
+ Adapt case sources, sinks, and clients of procedure code to the
+ new infrastructure.
+
+ * automake.mk: Add new files.
+
+ * levene.c: Adapt to new casereaders. Abstract better.
+
+ * merge.c: New file.
+
+ * merge.h: New file.
+
+ * sort.c: Rewrite in terms of case_ordering, merger.
+
+2007-05-31 Jason Stover <jhs@math.gcsu.edu>
+
+ * interaction.c: New file.
+ * interaction.h : New file.
+
+Mon Feb 5 15:42:14 2007 Ben Pfaff <blp@gnu.org>
+
+ * moments.c (moments_pass_two): Reduce number of multiplications.
+
+Thu Dec 7 15:27:49 WST 2006 John Darrington <john@darrington.wattle.id.au>
+
+ * factor-stats.c factor-stats.h: Changed independent values to
+ be pointers rather than copies.
+
+Wed Dec 6 21:14:59 2006 Ben Pfaff <blp@gnu.org>
+
+ * coefficient.c: (pspp_coeff_get_value) Compare variable pointers
+ instead of variable indexes.
+ (pspp_linreg_get_coeff) Ditto.
+ (design_matrix_col_to_var_index) Removed.
+ (design_matrix_col_to_var) Compare variable pointers
+ instead of variable indexes.
+ (cmp_dm_var_index) Ditto.
+ (design_matrix_var_to_column) Ditto.
+ (dm_var_to_last_column) Ditto.
+
+Sun Nov 5 08:30:32 WST 2006 John Darrington <john@darrington.wattle.id.au>
+
+ * levene.c levene.h Changed to use the new casefilter structure.
+
+2006-07-15 Jason Stover <jhs@math.gcsu.edu>
+
+ * coefficient.c (pspp_coeff_init): Make design_matrix arg const.
+
+2006-07-14 Jason Stover <jhs@math.gcsu.edu>
+
+ * coefficient.c (pspp_coeff_init): Removed use of
+ pspp_linreg_cache to make the routines more generally useful.
+
+2006-05-19 Jason Stover <jhs@math.gcsu.edu>
+
+ * coefficient.h: Renamed pspp_linreg_coeff to pspp_coeff.
+
+ * coefficient.c: Moved to src/math.
+
+ * coefficient.h: Moved to src/math.
+
Tue May 9 21:09:37 2006 Ben Pfaff <blp@gnu.org>
* sort.c (sort_active_file_to_casefile): Check return value of
projects / pspp-builds.git / blobdiff