1 2008-02-28 Jason Stover <jhs@math.gcsu.edu>
3 * linreg.c (has_coefficient): New function.
5 * linreg.c (pspp_linreg_predict): Fix bug 22419.
7 2007-09-21 Jason Stover <jhs@math.gcsu.edu>
9 * linreg.c (pspp_linreg_cache_free): Partial fix of memory leak,
12 2007-08-11 Jason Stover <jhs@math.gcsu.edu>
14 * linreg.h (enum): Dropped ambiguous PSPP_LINREG_SVD in favor of
15 PSPP_LINREG_QR. Added PSPP_LINREG_CONDITIONAL_INVERSE.
17 * linreg.c (pspp_linreg): Added scope and comment for use of
18 generalized inverse to solve normal equations.
20 2007-04-12 Jason Stover <jhs@math.gcsu.edu>
22 * linreg.c: (pspp_linreg_cache_free) Check for null pointer before
25 Wed Dec 6 21:16:22 2006 Ben Pfaff <blp@gnu.org>
27 * linreg.c: (pspp_linreg_get_vars) Compare variable pointers
28 instead of variable indexes.
30 2006-05-19 Jason Stover <jhs@math.gcsu.edu>
32 * coefficient.c: Moved to src/math.
34 * coefficient.h: Moved to src/math.
36 2006-05-11 Jason Stover <jhs@math.gcsu.edu>
38 * linreg.h: Made linreg_cache's coeff a pspp_linreg_coeff**.
40 2006-04-28 Jason Stover <jhs@math.gcsu.edu>
42 * linreg.c (pspp_linreg_get_vars): New function. Fills an array with
43 pointers to the variables used in the model.
45 * linreg.h: Add a pointer called get_vars to pspp_linreg_get_vars()
46 to access variables in a model.
48 * coefficient.c (pspp_linreg_coeff_init): Set the variable
49 associated with the intercept term to NULL.
51 2006-04-26 Jason Stover <jhs@math.gcsu.edu>
53 * linreg.h: Added a pointer to predicted values.
55 * linreg.c (pspp_linreg_cache_alloc): Initialized pointer to
58 2006-04-22 Jason Stover <jhs@debs.hjklfdsss.org>
60 * predict.c (pspp_linreg_residual): Removed unnecessary cast of c_
63 2006-04-18 Jason Stover <jhs@math.gcsu.edu>
65 * linreg.h: Added a pointer to a variable to store the resduals.
67 * linreg.c (pspp_linreg_cache_alloc): Initialize the residual
68 variable pointer to NULL.
70 2006-04-17 Jason Stover <jason@wonko.gcsu.edu>
72 * linreg.c (pspp_linreg_cache_free): Accept a pointer of type
73 void to match definition of trns_proc_func.
75 2006-04-17 Jason Stover <jhs@math.gcsu.edu>
77 * linreg.c (pspp_linreg_cache_free): Return a bool.
79 Sat Apr 15 18:03:01 2006 Ben Pfaff <blp@gnu.org>
81 * predict.c (pspp_linreg_predict): Change prototype to match
82 struct pspp_linreg_cache_struct's predict member.
83 * predict.c (pspp_linreg_residual): Change prototype to match
84 struct pspp_linreg_cache_struct's residual member.
86 Sat Apr 15 18:01:39 2006 Ben Pfaff <blp@gnu.org>
88 * coefficient.c (pspp_linreg_get_coeff): Compare n_indeps against
89 0, instead of NULL, because it's an integer type.
91 Mon Apr 3 13:20:54 2006 Ben Pfaff <blp@gnu.org>
93 * linreg.c (pspp_linreg): Move declaration before code for C90
96 2006-04-09 Jason Stover <jhs@math.gcsu.edu>
98 * predict.c (pspp_linreg_predict): Do something sensible even with
101 2006-04-07 Jason Stover <jhs@math.gcsu.edu>
103 * predict.c (pspp_linreg_predict): Improved handling of null
106 * predict.c (pspp_linreg_residuals): New function.
108 * coefficient.c: Improved handling of null pointer args.
110 2006-04-05 Jason Stover <jhs@math.gcsu.edu>
112 * predict.c: New file. pspp_linreg_predict() uses a linear model
113 to return a predicted value of the dependent variable.
115 * coefficient.c: Added pspp_linreg_coeff_get_est() and
116 pspp_linreg_coeff_get_std_err() to access estimated values of
117 coefficients and standard errors.
119 2006-04-03 Jason Stover <jhs@math.gcsu.edu>
121 * coefficient.c: Added pspp_linreg_get_coeff() to find a
122 coefficient corresponding to a variable/value combination.
124 Thu Mar 2 08:40:33 WST 2006 John Darrington <john@darrington.wattle.id.au>
126 * Moved files from src directory