PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // RBMTruncExpLayer.h 00004 // 00005 // Copyright (C) 2006 Dan Popovici & Pascal Lamblin 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: Dan Popovici & Pascal Lamblin 00036 00040 #ifndef RBMTruncExpLayer_INC 00041 #define RBMTruncExpLayer_INC 00042 00043 #include "RBMLayer.h" 00044 00045 namespace PLearn { 00046 using namespace std; 00047 00053 class RBMTruncExpLayer: public RBMLayer 00054 { 00055 typedef RBMLayer inherited; 00056 00057 public: 00058 //##### Public Build Options ############################################ 00059 00060 00061 00062 public: 00063 //##### Public Member Functions ######################################### 00064 00066 RBMTruncExpLayer( real the_learning_rate=0. ); 00067 00069 RBMTruncExpLayer( int the_size, real the_learning_rate=0. ); 00070 00071 00073 virtual void generateSample() ; 00074 00075 virtual void generateSamples(); 00076 00078 virtual void computeExpectation() ; 00079 00081 virtual void computeExpectations(); 00082 00084 virtual void fprop( const Vec& input, Vec& output ) const; 00085 00087 virtual void bpropUpdate(const Vec& input, const Vec& output, 00088 Vec& input_gradient, const Vec& output_gradient, 00089 bool accumulate=false); 00090 00092 virtual void bpropUpdate(const Mat& inputs, const Mat& outputs, 00093 Mat& input_gradients, 00094 const Mat& output_gradients, 00095 bool accumulate = false) 00096 { 00097 PLASSERT_MSG(false, "Not implemented"); 00098 } 00099 00100 //##### PLearn::Object Protocol ######################################### 00101 00102 // Declares other standard object methods. 00103 PLEARN_DECLARE_OBJECT(RBMTruncExpLayer); 00104 00105 // Simply calls inherited::build() then build_() 00106 virtual void build(); 00107 00109 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00110 00111 protected: 00112 //##### Not Options ##################################################### 00113 00114 protected: 00115 //##### Protected Member Functions ###################################### 00116 00118 static void declareOptions(OptionList& ol); 00119 00120 private: 00121 //##### Private Member Functions ######################################## 00122 00124 void build_(); 00125 00126 private: 00127 //##### Private Data Members ############################################ 00128 00129 // The rest of the private stuff goes here 00130 }; 00131 00132 // Declares a few other classes and functions related to this class 00133 DECLARE_OBJECT_PTR(RBMTruncExpLayer); 00134 00135 } // end of namespace PLearn 00136 00137 #endif 00138 00139 00140 /* 00141 Local Variables: 00142 mode:c++ 00143 c-basic-offset:4 00144 c-file-style:"stroustrup" 00145 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00146 indent-tabs-mode:nil 00147 fill-column:79 00148 End: 00149 */ 00150 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :