X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2FChangeLog;h=00255341949012d00e3b6ec1653b50abdb1ef3ab;hb=aab828a13b340ac7f3302e3a009274ed49d43ef1;hp=c78f51a858d1c59051a8b16e14c5cbfa1fed2d44;hpb=b0bf9b1b0f727fafac4296a048e3f45db5936f81;p=pspp-builds.git diff --git a/src/math/ChangeLog b/src/math/ChangeLog index c78f51a8..00255341 100644 --- a/src/math/ChangeLog +++ b/src/math/ChangeLog @@ -1,3 +1,171 @@ +2008-08-17 Jason H Stover + + * 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 + + * 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 + + * 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 + + * 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 + + * 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 + + * 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 + + * covariance-matrix.c (covariance_pass_one): New file, new function. + +2008-06-21 Jason Stover + + * 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 + + * linreg/: moved linreg.[ch] to src/math. + +2008-05-15 Ben Pfaff + + 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 + + * coefficient.c (pspp_linreg_get_coeff): Removed use of + coefficient 0 as intercept. + +2008-03-01 Jason Stover + + * 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 + + 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 + + * interaction.c: New file. + * interaction.h : New file. + +Mon Feb 5 15:42:14 2007 Ben Pfaff + + * moments.c (moments_pass_two): Reduce number of multiplications. + +Thu Dec 7 15:27:49 WST 2006 John Darrington + + * factor-stats.c factor-stats.h: Changed independent values to + be pointers rather than copies. + +Wed Dec 6 21:14:59 2006 Ben Pfaff + + * 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 + + * levene.c levene.h Changed to use the new casefilter structure. + +2006-07-15 Jason Stover + + * coefficient.c (pspp_coeff_init): Make design_matrix arg const. + +2006-07-14 Jason Stover + + * coefficient.c (pspp_coeff_init): Removed use of + pspp_linreg_cache to make the routines more generally useful. + +2006-05-19 Jason Stover + + * 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 + + * sort.c (sort_active_file_to_casefile): Check return value of + multipass_procedure(). + Wed May 3 23:06:43 2006 Ben Pfaff Continue reforming procedure execution. In this phase, get rid of