source: trunk/c++_tools/statistics/WilcoxonFoldChange.cc @ 675

Last change on this file since 675 was 675, checked in by Jari Häkkinen, 15 years ago

References #83. Changing project name to yat. Compilation will fail in this revision.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.1 KB
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1// $Id: WilcoxonFoldChange.cc 675 2006-10-10 12:08:45Z jari $
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 "yat/statistics/WilcoxonFoldChange.h"
25#include "yat/statistics/utility.h"
26#include "yat/classifier/Target.h"
27
28#include <cmath>
29#include <vector>
30#include <iostream>
31
32namespace theplu {
33namespace statistics {
34
35
36  WilcoxonFoldChange::WilcoxonFoldChange(bool absolute)
37    : Score(absolute)
38  {
39  }
40
41
42
43  double WilcoxonFoldChange::score(const classifier::Target& target, 
44                                   const utility::vector& value)
45  {
46    std::vector<double> distance;
47    //Peter, should reserve the vector to avoid reallocations   
48    weighted_=false;
49    for (size_t i=0; i<target.size(); i++) {
50      if (target(i)!=1) continue;
51      for (size_t j=0; j<target.size(); j++) {
52        if (target(j)==1) continue;
53        distance.push_back(value(i)-value(j));
54      }
55    }
56    if (absolute_)
57      return fabs(median(distance));
58    return median(distance);
59  }
60
61
62  double WilcoxonFoldChange::score(const classifier::Target& target, 
63                                   const classifier::DataLookupWeighted1D& value)
64  {
65    std::cerr << " WilcoxonFoldChange::score  not implemented" << std::endl;
66    return 0;
67  }
68
69
70  double WilcoxonFoldChange::score(const classifier::Target& target, 
71                                   const utility::vector& value,
72                                   const utility::vector& weight)
73  {
74    std::cerr << " WilcoxonFoldChange::score  not implemented" << std::endl;
75    return 0;
76  }
77
78} // of namespace statistics
79} // of namespace theplu
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