1 2007-09-21 Jason Stover <jhs@wonko.gcsu.edu>
3 * linreg.c (pspp_linreg_cache_free): Partial fix of memory leak,
6 2007-08-11 Jason Stover <jhs@math.gcsu.edu>
8 * linreg.h (enum): Dropped ambiguous PSPP_LINREG_SVD in favor of
9 PSPP_LINREG_QR. Added PSPP_LINREG_CONDITIONAL_INVERSE.
11 * linreg.c (pspp_linreg): Added scope and comment for use of
12 generalized inverse to solve normal equations.
14 2007-04-12 Jason Stover <jhs@math.gcsu.edu>
16 * linreg.c: (pspp_linreg_cache_free) Check for null pointer before
19 Wed Dec 6 21:16:22 2006 Ben Pfaff <blp@gnu.org>
21 * linreg.c: (pspp_linreg_get_vars) Compare variable pointers
22 instead of variable indexes.
24 2006-05-19 Jason Stover <jhs@math.gcsu.edu>
26 * coefficient.c: Moved to src/math.
28 * coefficient.h: Moved to src/math.
30 2006-05-11 Jason Stover <jhs@math.gcsu.edu>
32 * linreg.h: Made linreg_cache's coeff a pspp_linreg_coeff**.
34 2006-04-28 Jason Stover <jhs@math.gcsu.edu>
36 * linreg.c (pspp_linreg_get_vars): New function. Fills an array with
37 pointers to the variables used in the model.
39 * linreg.h: Add a pointer called get_vars to pspp_linreg_get_vars()
40 to access variables in a model.
42 * coefficient.c (pspp_linreg_coeff_init): Set the variable
43 associated with the intercept term to NULL.
45 2006-04-26 Jason Stover <jhs@math.gcsu.edu>
47 * linreg.h: Added a pointer to predicted values.
49 * linreg.c (pspp_linreg_cache_alloc): Initialized pointer to
52 2006-04-22 Jason Stover <jhs@debs.hjklfdsss.org>
54 * predict.c (pspp_linreg_residual): Removed unnecessary cast of c_
57 2006-04-18 Jason Stover <jhs@math.gcsu.edu>
59 * linreg.h: Added a pointer to a variable to store the resduals.
61 * linreg.c (pspp_linreg_cache_alloc): Initialize the residual
62 variable pointer to NULL.
64 2006-04-17 Jason Stover <jason@wonko.gcsu.edu>
66 * linreg.c (pspp_linreg_cache_free): Accept a pointer of type
67 void to match definition of trns_proc_func.
69 2006-04-17 Jason Stover <jhs@math.gcsu.edu>
71 * linreg.c (pspp_linreg_cache_free): Return a bool.
73 Sat Apr 15 18:03:01 2006 Ben Pfaff <blp@gnu.org>
75 * predict.c (pspp_linreg_predict): Change prototype to match
76 struct pspp_linreg_cache_struct's predict member.
77 * predict.c (pspp_linreg_residual): Change prototype to match
78 struct pspp_linreg_cache_struct's residual member.
80 Sat Apr 15 18:01:39 2006 Ben Pfaff <blp@gnu.org>
82 * coefficient.c (pspp_linreg_get_coeff): Compare n_indeps against
83 0, instead of NULL, because it's an integer type.
85 Mon Apr 3 13:20:54 2006 Ben Pfaff <blp@gnu.org>
87 * linreg.c (pspp_linreg): Move declaration before code for C90
90 2006-04-09 Jason Stover <jhs@math.gcsu.edu>
92 * predict.c (pspp_linreg_predict): Do something sensible even with
95 2006-04-07 Jason Stover <jhs@math.gcsu.edu>
97 * predict.c (pspp_linreg_predict): Improved handling of null
100 * predict.c (pspp_linreg_residuals): New function.
102 * coefficient.c: Improved handling of null pointer args.
104 2006-04-05 Jason Stover <jhs@math.gcsu.edu>
106 * predict.c: New file. pspp_linreg_predict() uses a linear model
107 to return a predicted value of the dependent variable.
109 * coefficient.c: Added pspp_linreg_coeff_get_est() and
110 pspp_linreg_coeff_get_std_err() to access estimated values of
111 coefficients and standard errors.
113 2006-04-03 Jason Stover <jhs@math.gcsu.edu>
115 * coefficient.c: Added pspp_linreg_get_coeff() to find a
116 coefficient corresponding to a variable/value combination.
118 Thu Mar 2 08:40:33 WST 2006 John Darrington <john@darrington.wattle.id.au>
120 * Moved files from src directory