PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // VMatKernel.h 00004 // 00005 // Copyright (C) 2005 Benoit Cromp 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 * $Id: VMatKernel.h 8130 2007-10-02 20:59:36Z louradou $ 00037 ******************************************************* */ 00038 00039 // Authors: Benoit Cromp 00040 00044 #ifndef VMatKernel_INC 00045 #define VMatKernel_INC 00046 00047 #include "Kernel.h" 00048 #include <plearn/vmat/VMat.h> 00049 00050 namespace PLearn { 00051 using namespace std; 00052 00053 class VMatKernel: public Kernel 00054 { 00055 00056 private: 00057 00058 typedef Kernel inherited; 00059 00060 protected: 00061 00062 // ********************* 00063 // * Protected options * 00064 // ********************* 00065 00066 // ************************* 00067 // * Public learnt options * 00068 // ************************* 00069 00070 Vec train_indices; 00071 00072 public: 00073 00074 // ************************ 00075 // * Public build options * 00076 // ************************ 00077 00078 VMat source; 00079 00080 00081 // ### declare public option fields (such as build options) here 00082 // ... 00083 00084 // **************** 00085 // * Constructors * 00086 // **************** 00087 00089 // Make sure the implementation in the .cc initializes all fields to 00090 // reasonable default values. 00091 VMatKernel(); 00092 00093 // ****************** 00094 // * Kernel methods * 00095 // ****************** 00096 00097 private: 00098 00100 // (Please implement in .cc) 00101 void build_(); 00102 00103 protected: 00104 00106 // (Please implement in .cc) 00107 static void declareOptions(OptionList& ol); 00108 00109 public: 00110 00111 // ************************ 00112 // **** Object methods **** 00113 // ************************ 00114 00116 virtual void build(); 00117 00119 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00120 00121 // Declares other standard object methods. 00122 // If your class is not instantiatable (it has pure virtual methods) 00123 // you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT_METHODS. 00124 PLEARN_DECLARE_OBJECT(VMatKernel); 00125 00126 // ************************ 00127 // **** Kernel methods **** 00128 // ************************ 00129 00131 virtual real evaluate(const Vec& x1, const Vec& x2) const; 00132 virtual real evaluate(real x1, real x2) const; 00133 virtual real evaluate(int x1, int x2) const; 00134 00136 virtual void setDataForKernelMatrix(VMat the_data); 00137 virtual void addDataForKernelMatrix(const Vec& newRow); 00138 virtual real evaluate_i_j(int i, int j) const; 00139 virtual real evaluate_i_x(int i, const Vec& x, real squared_norm_of_x=-1) const; 00140 virtual real evaluate_x_i(const Vec& x, int i, real squared_norm_of_x=-1) const; 00141 virtual void computeGramMatrix(Mat K) const; 00142 00144 // virtual void setParameters(Vec paramvec); 00145 // virtual Vec getParameters() const; 00146 }; 00147 00148 // Declares a few other classes and functions related to this class. 00149 DECLARE_OBJECT_PTR(VMatKernel); 00150 00151 } // end of namespace PLearn 00152 00153 #endif 00154 00155 00156 /* 00157 Local Variables: 00158 mode:c++ 00159 c-basic-offset:4 00160 c-file-style:"stroustrup" 00161 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00162 indent-tabs-mode:nil 00163 fill-column:79 00164 End: 00165 */ 00166 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :