PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // RandomSamplesFromVMatrix.h 00004 // 00005 // Copyright (C) 2006 Hugo Larochelle 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: Hugo Larochelle 00036 00040 #ifndef RandomSamplesFromVMatrix_INC 00041 #define RandomSamplesFromVMatrix_INC 00042 00043 #include <plearn/vmat/RowBufferedVMatrix.h> 00044 #include <plearn/math/PRandom.h> 00045 #include <plearn/vmat/VMat.h> 00046 00047 namespace PLearn { 00048 00055 class RandomSamplesFromVMatrix : public RowBufferedVMatrix 00056 { 00057 typedef RowBufferedVMatrix inherited; 00058 00059 public: 00060 //##### Public Build Options ############################################ 00061 00063 VMat source; 00065 real flength; 00067 int32_t seed; 00068 00069 public: 00070 //##### Public Member Functions ######################################### 00071 00073 // ### Make sure the implementation in the .cc 00074 // ### initializes all fields to reasonable default values. 00075 RandomSamplesFromVMatrix(); 00076 00077 //##### PLearn::Object Protocol ######################################### 00078 00079 // Declares other standard object methods. 00080 // ### If your class is not instantiatable (it has pure virtual methods) 00081 // ### you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT_METHODS 00082 PLEARN_DECLARE_OBJECT(RandomSamplesFromVMatrix); 00083 00084 // Simply calls inherited::build() then build_() 00085 virtual void build(); 00086 00088 // (PLEASE IMPLEMENT IN .cc) 00089 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00090 00093 virtual PP<Dictionary> getDictionary(int col) const; 00094 00096 virtual void getValues(int row, int col, Vec& values) const; 00097 00099 virtual void getValues(const Vec& input, int col, Vec& values) const; 00100 00101 00102 protected: 00103 //##### Protected Options ############################################### 00104 00106 PP<PRandom> rgen; 00107 00108 protected: 00109 //##### Protected Member Functions ###################################### 00110 00112 // (PLEASE IMPLEMENT IN .cc) 00113 static void declareOptions(OptionList& ol); 00114 00117 // (PLEASE IMPLEMENT IN .cc) 00118 virtual void getNewRow(int i, const Vec& v) const; 00119 00120 private: 00121 //##### Private Member Functions ######################################## 00122 00124 // (PLEASE IMPLEMENT IN .cc) 00125 void build_(); 00126 00127 private: 00128 //##### Private Data Members ############################################ 00129 00130 // The rest of the private stuff goes here 00131 }; 00132 00133 // Declares a few other classes and functions related to this class 00134 DECLARE_OBJECT_PTR(RandomSamplesFromVMatrix); 00135 00136 } // end of namespace PLearn 00137 00138 #endif 00139 00140 00141 /* 00142 Local Variables: 00143 mode:c++ 00144 c-basic-offset:4 00145 c-file-style:"stroustrup" 00146 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00147 indent-tabs-mode:nil 00148 fill-column:79 00149 End: 00150 */ 00151 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :