source: trunk/yat/classifier/KNN_ReciprocalRank.h @ 2966

Last change on this file since 2966 was 2966, checked in by Jari Häkkinen, 9 years ago

Includes needed in openSUSE 12.2

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.8 KB
Line 
1#ifndef theplu_yat_classifier_knn_reciprocal_rank_h
2#define theplu_yat_classifier_knn_reciprocal_rank_h
3
4// $Id: KNN_ReciprocalRank.h 2966 2013-01-23 21:42:08Z jari $
5
6/*
7  Copyright (C) 2008 Jari Häkkinen, Peter Johansson, Markus Ringnér
8
9  This file is part of the yat library, http://dev.thep.lu.se/yat
10
11  The yat library is free software; you can redistribute it and/or
12  modify it under the terms of the GNU General Public License as
13  published by the Free Software Foundation; either version 3 of the
14  License, or (at your option) any later version.
15
16  The yat library is distributed in the hope that it will be useful,
17  but WITHOUT ANY WARRANTY; without even the implied warranty of
18  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  General Public License for more details.
20
21  You should have received a copy of the GNU General Public License
22  along with yat. If not, see <http://www.gnu.org/licenses/>.
23*/
24
25#include <cstddef>
26#include <vector>
27
28namespace theplu {
29namespace yat {
30 
31  namespace utility {
32    class VectorBase;
33    class VectorMutable;
34  }
35
36namespace classifier {
37
38  class Target;
39 
40
41  ///
42  /// @brief A model of the concept \ref concept_neighbor_weighting to
43  /// be used with KNN to weight the votes of the k nearest neighbors
44  /// of a sample.
45  ///
46  /// KNN_ReciprocalRank weights the vote of a nearest neighbor with
47  /// its reciprocal rank. The class of the nearest neighbor gets
48  /// the vote 1/1, the class of the second nearest neighbor gets the
49  /// vote 1/2, and so on
50  ///
51  struct KNN_ReciprocalRank
52  {   
53    /**
54       The total vote for each class is calculated and returned in prediction.
55    */
56    void operator()(const utility::VectorBase& distance,
57                    const std::vector<size_t>& k_sorted,
58                    const Target& target, 
59                    utility::VectorMutable& prediction) const;   
60  };
61
62}}} // of namespace classifier, yat, and theplu
63   
64#endif
Note: See TracBrowser for help on using the repository browser.