source: trunk/yat/classifier/BootstrapSampler.h @ 865

Last change on this file since 865 was 865, checked in by Peter, 14 years ago

changing URL to http://trac.thep.lu.se/trac/yat

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.8 KB
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1#ifndef _theplu_yat_classifier_bootstrap_sampler_
2#define _theplu_yat_classifier_bootstrap_sampler_
3
4// $Id: BootstrapSampler.h 865 2007-09-10 19:41:04Z peter $
5
6/*
7  Copyright (C) 2007 Peter Johansson
8
9  This file is part of the yat library, http://trac.thep.lu.se/trac/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 splitting a set into training set and validation set
37     in a crossvalidation manner.
38
39     This is done in a balanced way, meaning the proportions between
40     the classes in the trainingset is equal to the proportions in the
41     whole dataset. For each class \f$ N_i \f$ samples are drawn with
42     replacement, where \f$ N_i \f$ is number of samples in class i.
43  */
44  class BootstrapSampler : public Sampler
45  {
46
47  public:
48    ///
49    /// @brief Constructor
50    ///
51    /// @a target targets.   
52    /// @a N total number of partitions.
53    ///
54    BootstrapSampler(const Target& target, const size_t N);
55
56    ///
57    /// Destructor
58    ///
59    virtual ~BootstrapSampler();
60
61  private:
62    void build(const Target& target, size_t N); 
63
64  };
65
66}}} // of namespace classifier, yat, and theplu
67
68#endif
69
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