PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // KernelRidgeRegressor.h 00004 // 00005 // Copyright (C) 2005 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 /* ******************************************************* 00036 * $Id: .pyskeleton_header 544 2003-09-01 00:05:31Z plearner $ 00037 ******************************************************* */ 00038 00039 // Authors: Nicolas Chapados 00040 00044 #ifndef KernelRidgeRegressor_INC 00045 #define KernelRidgeRegressor_INC 00046 00047 // From PLearn 00048 #include <plearn/ker/Kernel.h> 00049 #include <plearn_learners/generic/PLearner.h> 00050 00051 namespace PLearn { 00052 00077 class KernelRidgeRegressor : public PLearner 00078 { 00079 typedef PLearner inherited; 00080 00081 public: 00082 //##### Public Build Options ############################################ 00083 00085 bool m_include_bias; 00086 00089 Ker m_kernel; 00090 00092 real m_weight_decay; 00093 00094 00095 public: 00096 //##### Public Member Functions ######################################### 00097 00099 KernelRidgeRegressor(); 00100 00101 00102 //##### PLearner Member Functions ####################################### 00103 00106 virtual int outputsize() const; 00107 00111 virtual void forget(); 00112 00116 virtual void train(); 00117 00119 virtual void computeOutput(const Vec& input, Vec& output) const; 00120 00122 virtual void computeCostsFromOutputs(const Vec& input, const Vec& output, 00123 const Vec& target, Vec& costs) const; 00124 00127 virtual TVec<std::string> getTestCostNames() const; 00128 00131 virtual TVec<std::string> getTrainCostNames() const; 00132 00133 00134 //##### PLearn::Object Protocol ######################################### 00135 00136 // Declares other standard object methods. 00137 PLEARN_DECLARE_OBJECT(KernelRidgeRegressor); 00138 00139 // Simply calls inherited::build() then build_() 00140 virtual void build(); 00141 00143 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00144 00145 protected: 00146 //##### Protected Options ############################################### 00147 00151 Mat m_params; 00152 00155 VMat m_training_inputs; 00156 00158 mutable Vec m_kernel_evaluations; 00159 00160 protected: 00162 static void declareOptions(OptionList& ol); 00163 00164 private: 00166 void build_(); 00167 }; 00168 00169 // Declares a few other classes and functions related to this class 00170 DECLARE_OBJECT_PTR(KernelRidgeRegressor); 00171 00172 } // end of namespace PLearn 00173 00174 #endif 00175 00176 00177 /* 00178 Local Variables: 00179 mode:c++ 00180 c-basic-offset:4 00181 c-file-style:"stroustrup" 00182 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00183 indent-tabs-mode:nil 00184 fill-column:79 00185 End: 00186 */ 00187 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :