source: trunk/yat/statistics/SAMScore.cc @ 1703

Last change on this file since 1703 was 1487, checked in by Jari Häkkinen, 13 years ago

Addresses #436. GPL license copy reference should also be updated.

  • 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 1487 2008-09-10 08:41:36Z jari $
2
3/*
4  Copyright (C) 2006, 2007 Jari Häkkinen, Peter Johansson
5  Copyright (C) 2008 Peter Johansson
6
7  This file is part of the yat library, http://dev.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 3 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 yat. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#include "SAMScore.h"
24#include "Averager.h"
25#include "AveragerWeighted.h"
26#include "yat/classifier/DataLookupWeighted1D.h"
27#include "yat/classifier/Target.h"
28#include "yat/utility/VectorBase.h"
29
30#include <cmath>
31
32namespace theplu {
33namespace yat {
34namespace statistics { 
35
36  SAMScore::SAMScore(const double s0, bool b) 
37    : Score(b), s0_(s0)
38  {
39  }
40
41  double SAMScore::score(const classifier::Target& target, 
42                         const utility::VectorBase& value) const
43  {
44    statistics::Averager positive;
45    statistics::Averager negative;
46    for(size_t i=0; i<target.size(); i++){
47      if (target.binary(i))
48        positive.add(value(i));
49      else
50        negative.add(value(i));
51    }
52    return score(positive, negative);
53  }
54
55  double SAMScore::score(const classifier::Target& target, 
56                         const classifier::DataLookupWeighted1D& value) const
57  {
58    statistics::AveragerWeighted positive;
59    statistics::AveragerWeighted negative;
60    for(size_t i=0; i<target.size(); i++){
61      if (target.binary(i))
62        positive.add(value.data(i),value.weight(i));
63      else
64        negative.add(value.data(i),value.weight(i));
65    }
66    return score(positive, negative);
67  }
68
69
70
71  double SAMScore::score(const classifier::Target& target, 
72                         const utility::VectorBase& value,
73                         const utility::VectorBase& weight) const
74  {
75    statistics::AveragerWeighted positive;
76    statistics::AveragerWeighted negative;
77    for(size_t i=0; i<target.size(); i++){
78      if (target.binary(i))
79        positive.add(value(i),weight(i));
80      else
81        negative.add(value(i),weight(i));
82    }
83    return score(positive, negative);
84  }
85
86}}} // of namespace statistics, yat, and theplu
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