1 2007-08-11 Jason Stover <jhs@math.gcsu.edu>
3 * linreg.h (enum): Dropped ambiguous PSPP_LINREG_SVD in favor of
4 PSPP_LINREG_QR. Added PSPP_LINREG_CONDITIONAL_INVERSE.
6 * linreg.c (pspp_linreg): Added scope and comment for use of
7 generalized inverse to solve normal equations.
9 2007-04-12 Jason Stover <jhs@math.gcsu.edu>
11 * linreg.c: (pspp_linreg_cache_free) Check for null pointer before
14 Wed Dec 6 21:16:22 2006 Ben Pfaff <blp@gnu.org>
16 * linreg.c: (pspp_linreg_get_vars) Compare variable pointers
17 instead of variable indexes.
19 2006-05-19 Jason Stover <jhs@math.gcsu.edu>
21 * coefficient.c: Moved to src/math.
23 * coefficient.h: Moved to src/math.
25 2006-05-11 Jason Stover <jhs@math.gcsu.edu>
27 * linreg.h: Made linreg_cache's coeff a pspp_linreg_coeff**.
29 2006-04-28 Jason Stover <jhs@math.gcsu.edu>
31 * linreg.c (pspp_linreg_get_vars): New function. Fills an array with
32 pointers to the variables used in the model.
34 * linreg.h: Add a pointer called get_vars to pspp_linreg_get_vars()
35 to access variables in a model.
37 * coefficient.c (pspp_linreg_coeff_init): Set the variable
38 associated with the intercept term to NULL.
40 2006-04-26 Jason Stover <jhs@math.gcsu.edu>
42 * linreg.h: Added a pointer to predicted values.
44 * linreg.c (pspp_linreg_cache_alloc): Initialized pointer to
47 2006-04-22 Jason Stover <jhs@debs.hjklfdsss.org>
49 * predict.c (pspp_linreg_residual): Removed unnecessary cast of c_
52 2006-04-18 Jason Stover <jhs@math.gcsu.edu>
54 * linreg.h: Added a pointer to a variable to store the resduals.
56 * linreg.c (pspp_linreg_cache_alloc): Initialize the residual
57 variable pointer to NULL.
59 2006-04-17 Jason Stover <jason@wonko.gcsu.edu>
61 * linreg.c (pspp_linreg_cache_free): Accept a pointer of type
62 void to match definition of trns_proc_func.
64 2006-04-17 Jason Stover <jhs@math.gcsu.edu>
66 * linreg.c (pspp_linreg_cache_free): Return a bool.
68 Sat Apr 15 18:03:01 2006 Ben Pfaff <blp@gnu.org>
70 * predict.c (pspp_linreg_predict): Change prototype to match
71 struct pspp_linreg_cache_struct's predict member.
72 * predict.c (pspp_linreg_residual): Change prototype to match
73 struct pspp_linreg_cache_struct's residual member.
75 Sat Apr 15 18:01:39 2006 Ben Pfaff <blp@gnu.org>
77 * coefficient.c (pspp_linreg_get_coeff): Compare n_indeps against
78 0, instead of NULL, because it's an integer type.
80 Mon Apr 3 13:20:54 2006 Ben Pfaff <blp@gnu.org>
82 * linreg.c (pspp_linreg): Move declaration before code for C90
85 2006-04-09 Jason Stover <jhs@math.gcsu.edu>
87 * predict.c (pspp_linreg_predict): Do something sensible even with
90 2006-04-07 Jason Stover <jhs@math.gcsu.edu>
92 * predict.c (pspp_linreg_predict): Improved handling of null
95 * predict.c (pspp_linreg_residuals): New function.
97 * coefficient.c: Improved handling of null pointer args.
99 2006-04-05 Jason Stover <jhs@math.gcsu.edu>
101 * predict.c: New file. pspp_linreg_predict() uses a linear model
102 to return a predicted value of the dependent variable.
104 * coefficient.c: Added pspp_linreg_coeff_get_est() and
105 pspp_linreg_coeff_get_std_err() to access estimated values of
106 coefficients and standard errors.
108 2006-04-03 Jason Stover <jhs@math.gcsu.edu>
110 * coefficient.c: Added pspp_linreg_get_coeff() to find a
111 coefficient corresponding to a variable/value combination.
113 Thu Mar 2 08:40:33 WST 2006 John Darrington <john@darrington.wattle.id.au>
115 * Moved files from src directory