source: trunk/yat/statistics/PearsonDistance.h @ 1051

Last change on this file since 1051 was 1051, checked in by Peter, 14 years ago

file name changes reflecting that distances are now classes

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.9 KB
Line 
1#ifndef theplu_yat_statistics_pearson_distance_h
2#define theplu_yat_statistics_pearson_distance_h
3
4// $Id: PearsonDistance.h 1051 2008-02-07 18:49:06Z peter $
5
6/*
7  Copyright (C) 2007 Peter Johansson, Markus Ringnér
8  Copyright (C) 2008 Peter Johansson
9
10  This file is part of the yat library, http://trac.thep.lu.se/yat
11
12  The yat library is free software; you can redistribute it and/or
13  modify it under the terms of the GNU General Public License as
14  published by the Free Software Foundation; either version 2 of the
15  License, or (at your option) any later version.
16
17  The yat library is distributed in the hope that it will be useful,
18  but WITHOUT ANY WARRANTY; without even the implied warranty of
19  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  General Public License for more details.
21
22  You should have received a copy of the GNU General Public License
23  along with this program; if not, write to the Free Software
24  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25  02111-1307, USA.
26*/
27
28#include "AveragerPair.h"
29#include "AveragerPairWeighted.h"
30#include "yat/utility/iterator_traits.h"
31
32namespace theplu {
33namespace yat {
34namespace statistics {
35
36  struct PearsonDistance
37  {
38    template <typename Iter1, typename Iter2>
39    double operator()
40    (Iter1 beg1,Iter1 end1, Iter2 beg2) const
41    {
42      return this->distance(beg1, end1, beg2, 
43                      typename utility::weighted_if_any2<Iter1,Iter2>::type());
44    }
45
46  private:
47    template <typename Iter1, typename Iter2>
48    double distance (Iter1 beg1,Iter1 end1, Iter2 beg2, 
49                     utility::unweighted_type) const
50    {
51      AveragerPairWeighted ap;
52      add(ap,beg1,end1,beg2);
53      return 1-ap.correlation();
54    }
55
56    template <typename Iter1, typename Iter2>
57    double distance (Iter1 beg1,Iter1 end1, Iter2 beg2, 
58                     utility::weighted_type) const
59    {
60      AveragerPairWeighted ap;
61      add(ap,beg1,end1,beg2);
62      return 1-ap.correlation();
63    }
64   
65  };
66
67}}} // of namespace statistics, yat, and theplu
68   
69#endif
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