PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // BackConvolution2DModule.h 00004 // 00005 // Copyright (C) 2006 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: Pascal Lamblin 00036 00040 #ifndef BackConvolution2DModule_INC 00041 #define BackConvolution2DModule_INC 00042 00043 #include <plearn_learners/online/OnlineLearningModule.h> 00044 00045 namespace PLearn { 00046 00051 class BackConvolution2DModule : public OnlineLearningModule 00052 { 00053 typedef OnlineLearningModule inherited; 00054 00055 public: 00056 //##### Public Build Options ############################################ 00057 00060 00062 int n_input_images; 00063 00065 int input_images_length; 00066 00068 int input_images_width; 00069 00071 int n_output_images; 00072 00074 int kernel_length; 00075 00077 int kernel_width; 00078 00080 int kernel_step1; 00081 00083 int kernel_step2; 00084 00090 TMat<int> connection_matrix; 00091 00093 real start_learning_rate; 00094 00097 real decrease_constant; 00098 00099 00100 //##### Learnt options, that we would want to access #################### 00101 00103 TMat<Mat> kernels; 00104 00106 Vec bias; 00107 00108 //##### Not options ##################################################### 00110 int output_images_length; 00111 00113 int output_images_width; 00114 00116 int input_images_size; 00117 00119 int output_images_size; 00120 00122 int kernel_size; 00123 00124 public: 00125 //##### Public Member Functions ######################################### 00126 00128 // ### Make sure the implementation in the .cc 00129 // ### initializes all fields to reasonable default values. 00130 BackConvolution2DModule(); 00131 00132 // Your other public member functions go here 00133 00135 virtual void fprop(const Vec& input, Vec& output) const; 00136 00147 // virtual void bpropUpdate(const Vec& input, const Vec& output, 00148 // const Vec& output_gradient); 00149 00154 virtual void bpropUpdate(const Vec& input, const Vec& output, 00155 Vec& input_gradient, 00156 const Vec& output_gradient, 00157 bool accumulate=false); 00158 00168 // virtual void bbpropUpdate(const Vec& input, const Vec& output, 00169 // const Vec& output_gradient, 00170 // const Vec& output_diag_hessian); 00171 00173 virtual void bbpropUpdate(const Vec& input, const Vec& output, 00174 Vec& input_gradient, 00175 const Vec& output_gradient, 00176 Vec& input_diag_hessian, 00177 const Vec& output_diag_hessian, 00178 bool accumulate=false); 00179 00183 virtual void forget(); 00184 00185 00190 // virtual void finalize(); 00191 00194 // virtual bool bpropDoesNothing(); 00195 00196 //##### PLearn::Object Protocol ######################################### 00197 00198 // Declares other standard object methods. 00199 // ### If your class is not instantiatable (it has pure virtual methods) 00200 // ### you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT 00201 PLEARN_DECLARE_OBJECT(BackConvolution2DModule); 00202 00203 // Simply calls inherited::build() then build_() 00204 virtual void build(); 00205 00207 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00208 00209 00210 protected: 00211 //##### Protected Member Functions ###################################### 00212 00214 static void declareOptions(OptionList& ol); 00215 00216 private: 00217 //##### Private Member Functions ######################################## 00218 00220 void build_(); 00221 00223 void build_kernels(); 00224 00225 private: 00226 //##### Private Data Members ############################################ 00227 00228 // The rest of the private stuff goes here 00229 real learning_rate; 00230 int step_number; 00231 00232 // The Mat they contain will point to sub-parts of input and output vectors 00233 // and gradients, for more convenience 00234 TVec<Mat> input_images; 00235 TVec<Mat> output_images; 00236 TVec<Mat> input_gradients; 00237 TVec<Mat> output_gradients; 00238 TVec<Mat> input_diag_hessians; 00239 TVec<Mat> output_diag_hessians; 00240 00241 // Will store gradients wrt kernels 00242 mutable Mat kernel_gradient; 00243 // Will store the term-to-term squared kernels (for bbprop) 00244 mutable Mat squared_kernel; 00245 }; 00246 00247 // Declares a few other classes and functions related to this class 00248 DECLARE_OBJECT_PTR(BackConvolution2DModule); 00249 00250 } // end of namespace PLearn 00251 00252 #endif 00253 00254 00255 /* 00256 Local Variables: 00257 mode:c++ 00258 c-basic-offset:4 00259 c-file-style:"stroustrup" 00260 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00261 indent-tabs-mode:nil 00262 fill-column:79 00263 End: 00264 */ 00265 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :