source: trunk/yat/classifier/KNN_ReciprocalRank.cc

Last change on this file was 2919, checked in by Peter, 9 years ago

update copyright years

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.4 KB
RevLine 
[1112]1// $Id: KNN_ReciprocalRank.cc 2919 2012-12-19 06:54:23Z peter $
2
[1437]3/*
[2119]4  Copyright (C) 2008 Jari Häkkinen, Peter Johansson, Markus Ringnér
[2919]5  Copyright (C) 2012 Peter Johansson
[1437]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
[1486]11  published by the Free Software Foundation; either version 3 of the
[1437]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
[1487]20  along with yat. If not, see <http://www.gnu.org/licenses/>.
[1437]21*/
22
[2881]23#include <config.h>
24
[1112]25#include "KNN_ReciprocalRank.h"
26#include "Target.h"
27
28#include "yat/utility/VectorBase.h"
29#include "yat/utility/VectorMutable.h"
30
[1156]31#include <cmath>
[1112]32#include <vector>
33
34namespace theplu {
35namespace yat {
36namespace classifier {
37
38  void KNN_ReciprocalRank::operator()(const utility::VectorBase& distance,
[1522]39                                      const std::vector<size_t>& k_sorted, 
[1112]40                                      const Target& target, 
41                                      utility::VectorMutable& prediction) const
42  {           
43    for(size_t j=0;j<k_sorted.size();j++) 
[1156]44      if(!std::isinf(distance(k_sorted[j])))
45         prediction(target(k_sorted[j]))+=1.0/(j+1);               
[1112]46  }
47
48}}}
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