1 2008-03-10 Jason Stover <jhs@math.gcsu.edu>
3 * linreg.c (pspp_linreg): Remove use of coefficient 0 as intercept.
5 2008-03-08 Jason Stover <jhs@wonko.gcsu.edu>
7 * linreg.c (pspp_linreg_get_vars): Clean up the loop that searches
8 for coefficient/variable matches. Fix for bug 22419.
10 2008-02-28 Jason Stover <jhs@math.gcsu.edu>
12 * linreg.c (has_coefficient): New function.
14 * linreg.c (pspp_linreg_predict): Fix bug 22419.
16 2007-09-21 Jason Stover <jhs@math.gcsu.edu>
18 * linreg.c (pspp_linreg_cache_free): Partial fix of memory leak,
21 2007-08-11 Jason Stover <jhs@math.gcsu.edu>
23 * linreg.h (enum): Dropped ambiguous PSPP_LINREG_SVD in favor of
24 PSPP_LINREG_QR. Added PSPP_LINREG_CONDITIONAL_INVERSE.
26 * linreg.c (pspp_linreg): Added scope and comment for use of
27 generalized inverse to solve normal equations.
29 2007-04-12 Jason Stover <jhs@math.gcsu.edu>
31 * linreg.c: (pspp_linreg_cache_free) Check for null pointer before
34 Wed Dec 6 21:16:22 2006 Ben Pfaff <blp@gnu.org>
36 * linreg.c: (pspp_linreg_get_vars) Compare variable pointers
37 instead of variable indexes.
39 2006-05-19 Jason Stover <jhs@math.gcsu.edu>
41 * coefficient.c: Moved to src/math.
43 * coefficient.h: Moved to src/math.
45 2006-05-11 Jason Stover <jhs@math.gcsu.edu>
47 * linreg.h: Made linreg_cache's coeff a pspp_linreg_coeff**.
49 2006-04-28 Jason Stover <jhs@math.gcsu.edu>
51 * linreg.c (pspp_linreg_get_vars): New function. Fills an array with
52 pointers to the variables used in the model.
54 * linreg.h: Add a pointer called get_vars to pspp_linreg_get_vars()
55 to access variables in a model.
57 * coefficient.c (pspp_linreg_coeff_init): Set the variable
58 associated with the intercept term to NULL.
60 2006-04-26 Jason Stover <jhs@math.gcsu.edu>
62 * linreg.h: Added a pointer to predicted values.
64 * linreg.c (pspp_linreg_cache_alloc): Initialized pointer to
67 2006-04-22 Jason Stover <jhs@debs.hjklfdsss.org>
69 * predict.c (pspp_linreg_residual): Removed unnecessary cast of c_
72 2006-04-18 Jason Stover <jhs@math.gcsu.edu>
74 * linreg.h: Added a pointer to a variable to store the resduals.
76 * linreg.c (pspp_linreg_cache_alloc): Initialize the residual
77 variable pointer to NULL.
79 2006-04-17 Jason Stover <jason@wonko.gcsu.edu>
81 * linreg.c (pspp_linreg_cache_free): Accept a pointer of type
82 void to match definition of trns_proc_func.
84 2006-04-17 Jason Stover <jhs@math.gcsu.edu>
86 * linreg.c (pspp_linreg_cache_free): Return a bool.
88 Sat Apr 15 18:03:01 2006 Ben Pfaff <blp@gnu.org>
90 * predict.c (pspp_linreg_predict): Change prototype to match
91 struct pspp_linreg_cache_struct's predict member.
92 * predict.c (pspp_linreg_residual): Change prototype to match
93 struct pspp_linreg_cache_struct's residual member.
95 Sat Apr 15 18:01:39 2006 Ben Pfaff <blp@gnu.org>
97 * coefficient.c (pspp_linreg_get_coeff): Compare n_indeps against
98 0, instead of NULL, because it's an integer type.
100 Mon Apr 3 13:20:54 2006 Ben Pfaff <blp@gnu.org>
102 * linreg.c (pspp_linreg): Move declaration before code for C90
105 2006-04-09 Jason Stover <jhs@math.gcsu.edu>
107 * predict.c (pspp_linreg_predict): Do something sensible even with
110 2006-04-07 Jason Stover <jhs@math.gcsu.edu>
112 * predict.c (pspp_linreg_predict): Improved handling of null
115 * predict.c (pspp_linreg_residuals): New function.
117 * coefficient.c: Improved handling of null pointer args.
119 2006-04-05 Jason Stover <jhs@math.gcsu.edu>
121 * predict.c: New file. pspp_linreg_predict() uses a linear model
122 to return a predicted value of the dependent variable.
124 * coefficient.c: Added pspp_linreg_coeff_get_est() and
125 pspp_linreg_coeff_get_std_err() to access estimated values of
126 coefficients and standard errors.
128 2006-04-03 Jason Stover <jhs@math.gcsu.edu>
130 * coefficient.c: Added pspp_linreg_get_coeff() to find a
131 coefficient corresponding to a variable/value combination.
133 Thu Mar 2 08:40:33 WST 2006 John Darrington <john@darrington.wattle.id.au>
135 * Moved files from src directory