PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // NeuralNetworkARDKernel.h 00004 // 00005 // Copyright (C) 2007 Nicolas Chapados 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: Nicolas Chapados 00036 00040 #ifndef NeuralNetworkARDKernel_INC 00041 #define NeuralNetworkARDKernel_INC 00042 00043 #include <plearn/ker/ARDBaseKernel.h> 00044 00045 namespace PLearn { 00046 00080 class NeuralNetworkARDKernel : public ARDBaseKernel 00081 { 00082 typedef ARDBaseKernel inherited; 00083 00084 public: 00085 //##### Public Build Options ############################################ 00086 00087 // (No new options other than those inherited) 00088 00089 public: 00090 //##### Public Member Functions ######################################### 00091 00093 NeuralNetworkARDKernel(); 00094 00095 00096 //##### Kernel Member Functions ######################################### 00097 00099 virtual real evaluate(const Vec& x1, const Vec& x2) const; 00100 00102 virtual void computeGramMatrix(Mat K) const; 00103 00106 virtual void computeGramMatrixDerivative(Mat& KD, const string& kernel_param, 00107 real epsilon=1e-6) const; 00108 00110 virtual void evaluate_all_i_x(const Vec& x, const Vec& k_xi_x, 00111 real squared_norm_of_x=-1, int istart = 0) const; 00112 00113 00114 //##### PLearn::Object Protocol ######################################### 00115 00116 // Declares other standard object methods. 00117 PLEARN_DECLARE_OBJECT(NeuralNetworkARDKernel); 00118 00119 // Simply calls inherited::build() then build_() 00120 virtual void build(); 00121 00123 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00124 00125 protected: 00127 static void declareOptions(OptionList& ol); 00128 00130 real derivIspGlobalSigma(int i, int j, int arg, real K) const; 00131 00132 // Compute derivative w.r.t. isp_signal_sigma for WHOLE MATRIX 00133 void computeGramMatrixDerivIspSignalSigma(Mat& KD) const; 00134 00135 // Compute derivative w.r.t. isp_input_sigma[arg] for WHOLE MATRIX 00136 void computeGramMatrixDerivIspInputSigma(Mat& KD, int arg) const; 00137 00138 private: 00140 void build_(); 00141 }; 00142 00143 // Declares a few other classes and functions related to this class 00144 DECLARE_OBJECT_PTR(NeuralNetworkARDKernel); 00145 00146 } // end of namespace PLearn 00147 00148 #endif 00149 00150 00151 /* 00152 Local Variables: 00153 mode:c++ 00154 c-basic-offset:4 00155 c-file-style:"stroustrup" 00156 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00157 indent-tabs-mode:nil 00158 fill-column:79 00159 End: 00160 */ 00161 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :