1 2008-03-08 Jason Stover <jhs@wonko.gcsu.edu>
3 * linreg.c (pspp_linreg_get_vars): Clean up the loop that searches
4 for coefficient/variable matches. Fix for bug 22419.
6 2008-02-28 Jason Stover <jhs@math.gcsu.edu>
8 * linreg.c (has_coefficient): New function.
10 * linreg.c (pspp_linreg_predict): Fix bug 22419.
12 2007-09-21 Jason Stover <jhs@math.gcsu.edu>
14 * linreg.c (pspp_linreg_cache_free): Partial fix of memory leak,
17 2007-08-11 Jason Stover <jhs@math.gcsu.edu>
19 * linreg.h (enum): Dropped ambiguous PSPP_LINREG_SVD in favor of
20 PSPP_LINREG_QR. Added PSPP_LINREG_CONDITIONAL_INVERSE.
22 * linreg.c (pspp_linreg): Added scope and comment for use of
23 generalized inverse to solve normal equations.
25 2007-04-12 Jason Stover <jhs@math.gcsu.edu>
27 * linreg.c: (pspp_linreg_cache_free) Check for null pointer before
30 Wed Dec 6 21:16:22 2006 Ben Pfaff <blp@gnu.org>
32 * linreg.c: (pspp_linreg_get_vars) Compare variable pointers
33 instead of variable indexes.
35 2006-05-19 Jason Stover <jhs@math.gcsu.edu>
37 * coefficient.c: Moved to src/math.
39 * coefficient.h: Moved to src/math.
41 2006-05-11 Jason Stover <jhs@math.gcsu.edu>
43 * linreg.h: Made linreg_cache's coeff a pspp_linreg_coeff**.
45 2006-04-28 Jason Stover <jhs@math.gcsu.edu>
47 * linreg.c (pspp_linreg_get_vars): New function. Fills an array with
48 pointers to the variables used in the model.
50 * linreg.h: Add a pointer called get_vars to pspp_linreg_get_vars()
51 to access variables in a model.
53 * coefficient.c (pspp_linreg_coeff_init): Set the variable
54 associated with the intercept term to NULL.
56 2006-04-26 Jason Stover <jhs@math.gcsu.edu>
58 * linreg.h: Added a pointer to predicted values.
60 * linreg.c (pspp_linreg_cache_alloc): Initialized pointer to
63 2006-04-22 Jason Stover <jhs@debs.hjklfdsss.org>
65 * predict.c (pspp_linreg_residual): Removed unnecessary cast of c_
68 2006-04-18 Jason Stover <jhs@math.gcsu.edu>
70 * linreg.h: Added a pointer to a variable to store the resduals.
72 * linreg.c (pspp_linreg_cache_alloc): Initialize the residual
73 variable pointer to NULL.
75 2006-04-17 Jason Stover <jason@wonko.gcsu.edu>
77 * linreg.c (pspp_linreg_cache_free): Accept a pointer of type
78 void to match definition of trns_proc_func.
80 2006-04-17 Jason Stover <jhs@math.gcsu.edu>
82 * linreg.c (pspp_linreg_cache_free): Return a bool.
84 Sat Apr 15 18:03:01 2006 Ben Pfaff <blp@gnu.org>
86 * predict.c (pspp_linreg_predict): Change prototype to match
87 struct pspp_linreg_cache_struct's predict member.
88 * predict.c (pspp_linreg_residual): Change prototype to match
89 struct pspp_linreg_cache_struct's residual member.
91 Sat Apr 15 18:01:39 2006 Ben Pfaff <blp@gnu.org>
93 * coefficient.c (pspp_linreg_get_coeff): Compare n_indeps against
94 0, instead of NULL, because it's an integer type.
96 Mon Apr 3 13:20:54 2006 Ben Pfaff <blp@gnu.org>
98 * linreg.c (pspp_linreg): Move declaration before code for C90
101 2006-04-09 Jason Stover <jhs@math.gcsu.edu>
103 * predict.c (pspp_linreg_predict): Do something sensible even with
106 2006-04-07 Jason Stover <jhs@math.gcsu.edu>
108 * predict.c (pspp_linreg_predict): Improved handling of null
111 * predict.c (pspp_linreg_residuals): New function.
113 * coefficient.c: Improved handling of null pointer args.
115 2006-04-05 Jason Stover <jhs@math.gcsu.edu>
117 * predict.c: New file. pspp_linreg_predict() uses a linear model
118 to return a predicted value of the dependent variable.
120 * coefficient.c: Added pspp_linreg_coeff_get_est() and
121 pspp_linreg_coeff_get_std_err() to access estimated values of
122 coefficients and standard errors.
124 2006-04-03 Jason Stover <jhs@math.gcsu.edu>
126 * coefficient.c: Added pspp_linreg_get_coeff() to find a
127 coefficient corresponding to a variable/value combination.
129 Thu Mar 2 08:40:33 WST 2006 John Darrington <john@darrington.wattle.id.au>
131 * Moved files from src directory