source: trunk/test/ttest_test.cc @ 1275

Last change on this file since 1275 was 1275, checked in by Jari Häkkinen, 13 years ago

Updating copyright statements.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.8 KB
Line 
1// $Id: ttest_test.cc 1275 2008-04-11 06:10:12Z jari $
2
3/*
4  Copyright (C) 2007 Jari Häkkinen, Peter Johansson
5  Copyright (C) 2008 Peter Johansson
6
7  This file is part of the yat library, http://trac.thep.lu.se/yat
8
9  The yat library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU General Public License as
11  published by the Free Software Foundation; either version 2 of the
12  License, or (at your option) any later version.
13
14  The yat library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  General Public License for more details.
18
19  You should have received a copy of the GNU General Public License
20  along with this program; if not, write to the Free Software
21  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22  02111-1307, USA.
23*/
24
25#include "Suite.h"
26
27#include "yat/classifier/Target.h"
28#include "yat/statistics/tTest.h"
29#include "yat/statistics/utility.h"
30#include "yat/utility/Vector.h"
31
32#include <cmath>
33#include <fstream>
34#include <iostream>
35
36
37using namespace theplu::yat;
38
39int main(int argc, char* argv[])
40{ 
41  test::Suite suite(argc, argv);
42
43  suite.err() << "testing ttest" << std::endl;
44  utility::Vector value(31);
45  std::vector<std::string> label(31,"positive");
46  for (size_t i=0; i<16; i++) 
47    label[i] = "negative";
48  classifier::Target target(label);
49  target.set_binary(0,false);
50  target.set_binary(1,true);
51  for (size_t i=0; i<value.size(); i++) 
52    value(i)=i;
53  statistics::tTest test;
54  statistics::add(test, value.begin(), value.end(), target);
55  double p = test.p_value_one_sided();
56  double p2 = test.p_value();
57  if (!suite.equal(p2, 2*p) ){
58    suite.add(false);
59    suite.err() << "Two-sided P-value should equal 2 * one-sided P-value.\n";
60  }
61
62  return suite.return_value();
63}
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