PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // LocallyWeightedDistribution.h 00004 // 00005 // Copyright (C) 2002 Pascal Vincent 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: LocallyWeightedDistribution.h 9418 2008-09-02 15:33:46Z nouiz $ 00037 ******************************************************* */ 00038 00040 #ifndef LocallyWeightedDistribution_INC 00041 #define LocallyWeightedDistribution_INC 00042 00043 #include "Distribution.h" 00044 00045 namespace PLearn { 00046 using namespace std; 00047 00048 #ifdef __INTEL_COMPILER 00049 #pragma warning(disable:654) // Get rid of compiler warning. 00050 #endif 00051 00052 class LocallyWeightedDistribution: public Distribution 00053 { 00054 00055 private: 00056 00057 typedef Distribution inherited; 00058 00060 mutable Vec trainsample, weights; 00061 00062 public: 00063 00064 00065 // ************************ 00066 // * public build options * 00067 // ************************ 00068 00070 Ker weighting_kernel; 00071 00073 PP<Distribution> localdistr; 00074 00075 // **************** 00076 // * Constructors * 00077 // **************** 00078 00079 // Default constructor, make sure the implementation in the .cc 00080 // initializes all fields to reasonable default values. 00081 LocallyWeightedDistribution(); 00082 00083 00084 // ****************** 00085 // * Object methods * 00086 // ****************** 00087 00088 private: 00090 // (Please implement in .cc) 00091 void build_(); 00092 00093 protected: 00095 // (Please implement in .cc) 00096 static void declareOptions(OptionList& ol); 00097 00098 public: 00099 // simply calls inherited::build() then build_() 00100 virtual void build(); 00101 00103 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00104 00106 PLEARN_DECLARE_OBJECT(LocallyWeightedDistribution); 00107 00108 // ******************* 00109 // * Distribution methods * 00110 // ******************* 00111 00113 virtual void train(VMat training_set); 00114 00116 virtual double log_density(const Vec& x) const; 00117 00118 }; 00119 00120 // Declares a few other classes and functions related to this class 00121 DECLARE_OBJECT_PTR(LocallyWeightedDistribution); 00122 00123 } // end of namespace PLearn 00124 00125 #ifdef __INTEL_COMPILER 00126 #pragma warning(default:654) 00127 #endif 00128 00129 #endif 00130 00131 00132 /* 00133 Local Variables: 00134 mode:c++ 00135 c-basic-offset:4 00136 c-file-style:"stroustrup" 00137 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00138 indent-tabs-mode:nil 00139 fill-column:79 00140 End: 00141 */ 00142 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :