source: trunk/yat/statistics/SAMScore.cc @ 1023

Last change on this file since 1023 was 1023, checked in by Peter, 14 years ago

passing VectorBase? in statistics::Score - refs #256

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.4 KB
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1// $Id: SAMScore.cc 1023 2008-02-01 18:12:35Z peter $
2
3/*
4  Copyright (C) 2006 Jari Häkkinen, Peter Johansson
5  Copyright (C) 2007 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 "SAMScore.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/VectorBase.h"
31
32#include <cmath>
33
34namespace theplu {
35namespace yat {
36namespace statistics { 
37
38  SAMScore::SAMScore(const double s0, bool b) 
39    : Score(b), s0_(s0)
40  {
41  }
42
43  double SAMScore::score(const classifier::Target& target, 
44                         const utility::VectorBase& value) const
45  {
46    statistics::Averager positive;
47    statistics::Averager negative;
48    for(size_t i=0; i<target.size(); i++){
49      if (target.binary(i))
50        positive.add(value(i));
51      else
52        negative.add(value(i));
53    }
54    return score(positive, negative);
55  }
56
57  double SAMScore::score(const classifier::Target& target, 
58                         const classifier::DataLookupWeighted1D& value) const
59  {
60    statistics::AveragerWeighted positive;
61    statistics::AveragerWeighted negative;
62    for(size_t i=0; i<target.size(); i++){
63      if (target.binary(i))
64        positive.add(value.data(i),value.weight(i));
65      else
66        negative.add(value.data(i),value.weight(i));
67    }
68    return score(positive, negative);
69  }
70
71
72
73  double SAMScore::score(const classifier::Target& target, 
74                         const utility::VectorBase& value,
75                         const utility::VectorBase& weight) const
76  {
77    statistics::AveragerWeighted positive;
78    statistics::AveragerWeighted negative;
79    for(size_t i=0; i<target.size(); i++){
80      if (target.binary(i))
81        positive.add(value(i),weight(i));
82      else
83        negative.add(value(i),weight(i));
84    }
85    return score(positive, negative);
86  }
87
88}}} // of namespace statistics, yat, and theplu
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