PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // RandomSamplesVMatrix.h 00004 // 00005 // Copyright (C) 2006 Olivier Delalleau 00006 // 00007 // Redistribution and use in source and binary forms, with or without 00008 // modification, are permitted provided that the following conditions are met: 00009 // 00010 // 1. Redistributions of source code must retain the above copyright 00011 // notice, this list of conditions and the following disclaimer. 00012 // 00013 // 2. Redistributions in binary form must reproduce the above copyright 00014 // notice, this list of conditions and the following disclaimer in the 00015 // documentation and/or other materials provided with the distribution. 00016 // 00017 // 3. The name of the authors may not be used to endorse or promote 00018 // products derived from this software without specific prior written 00019 // permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 // 00032 // This file is part of the PLearn library. For more information on the PLearn 00033 // library, go to the PLearn Web site at www.plearn.org 00034 00035 // Authors: Olivier Delalleau 00036 00040 #ifndef RandomSamplesVMatrix_INC 00041 #define RandomSamplesVMatrix_INC 00042 00043 #include "SourceVMatrix.h" 00044 #include <plearn/math/PRandom.h> 00045 00046 namespace PLearn { 00047 00058 class RandomSamplesVMatrix : public SourceVMatrix 00059 { 00060 typedef SourceVMatrix inherited; 00061 00062 public: 00063 //##### Public Build Options ############################################ 00064 00065 bool alternate_targets; 00066 string is_preserved; 00067 int n_non_preserved; 00068 int32_t seed; 00069 00072 00073 public: 00074 //##### Public Member Functions ######################################### 00075 00077 // ### Make sure the implementation in the .cc 00078 // ### initializes all fields to reasonable default values. 00079 RandomSamplesVMatrix(); 00080 00081 00082 //##### PLearn::Object Protocol ######################################### 00083 00084 // Declares other standard object methods. 00085 // ### If your class is not instantiatable (it has pure virtual methods) 00086 // ### you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT_METHODS 00087 PLEARN_DECLARE_OBJECT(RandomSamplesVMatrix); 00088 00089 // Simply calls inherited::build() then build_() 00090 virtual void build(); 00091 00093 // (PLEASE IMPLEMENT IN .cc) 00094 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00095 00096 protected: 00097 00099 PP<PRandom> random_gen; 00100 00102 TVec<int> non_preserved; 00103 00107 TVec<int> indices; 00108 00110 Vec last_targets; 00111 00113 TVec< TVec<int> > target_list; 00114 00118 TVec< Vec > target_distr; 00119 00121 mutable map<real, int> target_to_idx; 00122 00124 TVec< TVec<int> > by_target; 00125 00126 //##### Protected Options ############################################### 00127 00128 protected: 00129 00130 //##### Protected Member Functions ###################################### 00131 00133 // (PLEASE IMPLEMENT IN .cc) 00134 static void declareOptions(OptionList& ol); 00135 00139 virtual void getNewRow(int i, const Vec& v) const; 00140 00141 private: 00142 //##### Private Member Functions ######################################## 00143 00145 // (PLEASE IMPLEMENT IN .cc) 00146 void build_(); 00147 00148 private: 00149 //##### Private Data Members ############################################ 00150 00151 // The rest of the private stuff goes here 00152 }; 00153 00154 // Declares a few other classes and functions related to this class 00155 DECLARE_OBJECT_PTR(RandomSamplesVMatrix); 00156 00157 } // end of namespace PLearn 00158 00159 #endif 00160 00161 00162 /* 00163 Local Variables: 00164 mode:c++ 00165 c-basic-offset:4 00166 c-file-style:"stroustrup" 00167 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00168 indent-tabs-mode:nil 00169 fill-column:79 00170 End: 00171 */ 00172 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :