PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // IIDNoiseKernel.h 00004 // 00005 // Copyright (C) 2006-2007 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 IIDNoiseKernel_INC 00041 #define IIDNoiseKernel_INC 00042 00043 #include <plearn/ker/KroneckerBaseKernel.h> 00044 00045 namespace PLearn { 00046 00077 class IIDNoiseKernel : public KroneckerBaseKernel 00078 { 00079 typedef KroneckerBaseKernel inherited; 00080 00081 public: 00082 //##### Public Build Options ############################################ 00083 00086 real m_isp_noise_sigma; 00087 00090 real m_isp_kronecker_sigma; 00091 00092 public: 00093 //##### Public Member Functions ######################################### 00094 00096 IIDNoiseKernel(); 00097 00098 00099 //##### Kernel Member Functions ######################################### 00100 00102 virtual real evaluate(const Vec& x1, const Vec& x2) const; 00103 00105 virtual real evaluate_i_x(int i, const Vec& x, real) const; 00106 00109 virtual void evaluate_all_i_x(const Vec& x, const Vec& k_xi_x, 00110 real squared_norm_of_x=-1, int istart = 0) const; 00111 00114 virtual void computeGramMatrix(Mat K) const; 00115 00118 virtual void computeGramMatrixDerivative(Mat& KD, const string& kernel_param, 00119 real epsilon=1e-6) const; 00120 00121 //##### PLearn::Object Protocol ######################################### 00122 00123 // Declares other standard object methods. 00124 PLEARN_DECLARE_OBJECT(IIDNoiseKernel); 00125 00126 // Simply calls inherited::build() then build_() 00127 virtual void build(); 00128 00130 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00131 00132 protected: 00134 static void declareOptions(OptionList& ol); 00135 00138 void computeGramMatrixDerivKronecker(Mat& KD) const; 00139 00140 private: 00142 void build_(); 00143 }; 00144 00145 // Declares a few other classes and functions related to this class 00146 DECLARE_OBJECT_PTR(IIDNoiseKernel); 00147 00148 } // end of namespace PLearn 00149 00150 #endif 00151 00152 00153 /* 00154 Local Variables: 00155 mode:c++ 00156 c-basic-offset:4 00157 c-file-style:"stroustrup" 00158 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00159 indent-tabs-mode:nil 00160 fill-column:79 00161 End: 00162 */ 00163 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :