PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // ManifoldParzen2.h 00004 // 00005 // Copyright (C) 2003 Pascal Vincent, Julien Keable 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 00036 #ifndef ManifoldParzen2_INC 00037 #define ManifoldParzen2_INC 00038 00039 #include "GaussMix.h" 00040 00041 namespace PLearn { 00042 using namespace std; 00043 00044 class ManifoldParzen2 : public GaussMix 00045 { 00046 00047 private: 00048 00049 typedef GaussMix inherited; 00050 00051 Vec eigenval_copy; 00052 mutable Vec row; 00053 mutable Vec t_row; 00054 mutable VMat reference_set; 00055 mutable TMat<real> mu_temp; 00056 mutable TVec<real> temp_eigv; 00057 00058 int find_nearest_neighbor(VMat data, Vec x) const; 00059 00060 public: 00061 00062 // ********************* 00063 // * protected options * 00064 // ********************* 00065 00066 // ### declare protected option fields (such as learnt parameters) here 00067 // ... 00068 00070 int nneighbors; 00071 int ncomponents; 00072 00073 bool use_last_eigenval; 00074 real scale_factor; 00075 real global_lambda0; 00076 bool learn_mu; 00077 00078 // ************************ 00079 // * public build options * 00080 // ************************ 00081 00082 // ### declare public option fields (such as build options) here 00083 // ... 00084 00085 // **************** 00086 // * Constructors * 00087 // **************** 00088 00089 // Default constructor, make sure the implementation in the .cc 00090 // initializes all fields to reasonable default values. 00091 ManifoldParzen2(); 00092 00093 // ****************** 00094 // * Object methods * 00095 // ****************** 00096 00097 ManifoldParzen2(int the_nneighbors, int the_ncomponents, bool use_last_eigenvalue=true, real scale_factor=1); 00098 00099 protected: 00100 00102 static void declareOptions(OptionList& ol); 00103 00104 private: 00106 // (Please implement in .cc) 00107 void build_(); 00108 00109 public: 00110 // simply calls inherited::build() then build_() 00111 virtual void build(); 00112 00114 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00115 00117 PLEARN_DECLARE_OBJECT(ManifoldParzen2); 00118 00119 // ******************* 00120 // * Learner methods * 00121 // ******************* 00122 00124 // NOTE : the function assumes that the training_set has only input columns ! (width = dimension of feature space) 00125 virtual void train(); 00126 00128 virtual void computeOutput(const Vec& input, Vec& output) const; 00129 00131 virtual int outputsize() const; 00132 00133 real evaluate(const Vec x1,const Vec x2,real scale=1); 00134 00135 real evaluate_i_j(int i, int j,real scale=1); 00136 }; 00137 00138 // Declares a few other classes and functions related to this class 00139 DECLARE_OBJECT_PTR(ManifoldParzen2); 00140 00141 } // end of namespace PLearn 00142 00143 #endif 00144 00145 00146 /* 00147 Local Variables: 00148 mode:c++ 00149 c-basic-offset:4 00150 c-file-style:"stroustrup" 00151 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00152 indent-tabs-mode:nil 00153 fill-column:79 00154 End: 00155 */ 00156 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :