source: trunk/yat/classifier/BootstrapSampler.h @ 1437

Last change on this file since 1437 was 1437, checked in by Peter, 13 years ago

merge patch release 0.4.2 to trunk. Delta 0.4.2-0.4.1

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.7 KB
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1#ifndef _theplu_yat_classifier_bootstrap_sampler_
2#define _theplu_yat_classifier_bootstrap_sampler_
3
4// $Id: BootstrapSampler.h 1437 2008-08-25 17:55:00Z peter $
5
6/*
7  Copyright (C) 2007 Jari Häkkinen, Peter Johansson
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 2 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 this program; if not, write to the Free Software
23  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
24  02111-1307, USA.
25*/
26
27#include "Sampler.h"
28
29namespace theplu {
30namespace yat {
31namespace classifier {
32
33  class Target;
34
35  /**
36     @brief Class creating trainingset and validationset using bootstrapping.
37
38     This is done in a balanced way, meaning the proportions between
39     the classes in the trainingset is equal to the proportions in the
40     whole dataset. For each class \f$ N_i \f$ samples are drawn with
41     replacement, where \f$ N_i \f$ is number of samples in class i.
42  */
43  class BootstrapSampler : public Sampler
44  {
45
46  public:
47    ///
48    /// @brief Constructor
49    ///
50    /// @a target targets.   
51    /// @a N total number of partitions.
52    ///
53    BootstrapSampler(const Target& target, const size_t N);
54
55    ///
56    /// Destructor
57    ///
58    virtual ~BootstrapSampler();
59
60  private:
61    void build(const Target& target, size_t N); 
62
63  };
64
65}}} // of namespace classifier, yat, and theplu
66
67#endif
68
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