PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 2005 Yoshua Bengio 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 00036 /* ******************************************************* 00037 * $Id: LocalizedFeaturesLayerVariable.h 3994 2005-08-25 13:35:03Z chapados $ 00038 * This file is part of the PLearn library. 00039 ******************************************************* */ 00040 00041 #ifndef LocalizedFeaturesLayerVariable_INC 00042 #define LocalizedFeaturesLayerVariable_INC 00043 00044 #include "NaryVariable.h" 00045 00046 namespace PLearn { 00047 using namespace std; 00048 00049 00055 class LocalizedFeaturesLayerVariable: public NaryVariable 00056 { 00057 typedef NaryVariable inherited; 00058 00060 00062 int n_features; // = nb inputs 00063 int n_subsets; // = feature_subsets.length() 00064 int n_weights; 00065 00067 Mat mu; 00068 00072 TVec<Mat> local_weights; 00073 00074 public: 00075 00077 bool backprop_to_inputs; 00078 VMat feature_locations; // n_features x n_dim 00079 TVec<TVec<int> > feature_subsets; // n_subsets x (nb of features in i-th subset) 00080 int n_hidden_per_subset; 00081 bool knn_subsets; 00082 int n_neighbors_per_subset; 00083 bool gridding_subsets; 00084 bool center_on_feature_locations; 00085 long seed; 00086 bool shared_weights; 00087 int n_box; 00088 real sigma; 00089 00091 LocalizedFeaturesLayerVariable(); 00092 00093 PLEARN_DECLARE_OBJECT(LocalizedFeaturesLayerVariable); 00094 00095 virtual void build(); 00096 00097 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00098 00099 virtual void recomputeSize(int& l, int& w) const; 00100 virtual void fprop(); 00101 virtual void bprop(); 00102 00103 protected: 00104 00105 static void declareOptions(OptionList &ol); 00106 00107 virtual void computeSubsets(); 00108 00109 private: 00110 00111 void build_(); 00112 00113 }; 00114 00115 DECLARE_OBJECT_PTR(LocalizedFeaturesLayerVariable); 00116 00117 } // end of namespace PLearn 00118 00119 #endif 00120 00121 00122 /* 00123 Local Variables: 00124 mode:c++ 00125 c-basic-offset:4 00126 c-file-style:"stroustrup" 00127 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00128 indent-tabs-mode:nil 00129 fill-column:79 00130 End: 00131 */ 00132 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :