PLearn 0.1
LocallyWeightedDistribution.h
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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 :
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