source: trunk/yat/statistics/tTest.cc @ 779

Last change on this file since 779 was 779, checked in by Peter, 15 years ago

Refs #101

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1// $Id: tTest.cc 779 2007-03-05 18:58:30Z peter $
2
3/*
4  Copyright (C) The authors contributing to this file.
5
6  This file is part of the yat library, http://lev.thep.lu.se/trac/yat
7
8  The yat library is free software; you can redistribute it and/or
9  modify it under the terms of the GNU General Public License as
10  published by the Free Software Foundation; either version 2 of the
11  License, or (at your option) any later version.
12
13  The yat library is distributed in the hope that it will be useful,
14  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  General Public License for more details.
17
18  You should have received a copy of the GNU General Public License
19  along with this program; if not, write to the Free Software
20  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
21  02111-1307, USA.
22*/
23
24#include "tTest.h"
25#include "tScore.h"
26//#include "Averager.h"
27//#include "AveragerWeighted.h"
28//#include "yat/classifier/DataLookupWeighted1D.h"
29//#include "yat/classifier/Target.h"
30//#include "yat/utility/vector.h"
31
32#include <cassert>
33#include <cmath>
34
35namespace theplu {
36namespace yat {
37namespace statistics { 
38
39  tTest::tTest(bool b) 
40    : t_(0)
41  {
42  }
43
44  double tTest::score(const classifier::Target& target, 
45                      const utility::vector& value)
46  {
47    tScore score;
48    t_ = score.score(target, value, &dof_);
49    return t_;
50  }
51
52
53  double tTest::score(const classifier::Target& target, 
54                      const classifier::DataLookupWeighted1D& value)
55  {
56    tScore score;
57    t_ = score.score(target, value, &dof_);
58    return t_;
59  }
60
61
62  double tTest::score(const classifier::Target& target, 
63                      const utility::vector& value,
64                      const utility::vector& weight)
65  {
66    tScore score;
67    t_ = score.score(target, value, weight, &dof_);
68    return t_;
69  }
70
71  double tTest::p_value(void) const
72  {
73    if (!dof_)
74      return 1.0;
75    return gsl_cdf_tdist_Q(t_, dof_);
76  }
77
78}}} // of namespace statistics, yat, and theplu
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