PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // GenericNearestNeighbors.h 00004 // 00005 // Copyright (C) 2004 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: GenericNearestNeighbors.h 4337 2005-10-25 18:04:39Z chapados $ 00037 ******************************************************* */ 00038 00039 // Authors: Nicolas Chapados 00040 00041 00042 #ifndef GenericNearestNeighbors_INC 00043 #define GenericNearestNeighbors_INC 00044 00045 #include <plearn_learners/generic/PLearner.h> 00046 #include <plearn/ker/Kernel.h> 00047 00048 namespace PLearn { 00049 00090 class GenericNearestNeighbors; 00091 typedef PP< GenericNearestNeighbors > GenericNN; 00092 00093 class GenericNearestNeighbors: public PLearner 00094 { 00095 typedef PLearner inherited; 00096 00097 protected: 00099 mutable Vec currow; 00100 00101 public: 00102 //##### Public Build Options ############################################ 00103 00106 int num_neighbors; 00107 00110 bool copy_input; 00111 00114 bool copy_target; 00115 00119 bool copy_weight; 00120 00123 bool copy_index; 00124 00132 Ker distance_kernel; 00133 00134 public: 00135 //##### Object Methods ################################################## 00136 00138 GenericNearestNeighbors(); 00139 00140 00142 virtual void build(); 00143 00145 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00146 00147 // Declares other standard object methods. 00148 // If your class is not instantiatable (it has pure virtual methods) 00149 // you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT. 00150 PLEARN_DECLARE_ABSTRACT_OBJECT(GenericNearestNeighbors); 00151 00152 00153 public: 00154 //##### PLearner Methods ################################################ 00155 00158 virtual int outputsize() const; 00159 00160 private: 00162 void build_(); 00163 00164 protected: 00166 static void declareOptions(OptionList& ol); 00167 00174 void constructOutputVector(const TVec<int>& indices, Vec& output, 00175 const Mat& train_mat_override = Mat()) const; 00176 }; 00177 00178 // Declares a few other classes and functions related to this class. 00179 DECLARE_OBJECT_PTR(GenericNearestNeighbors); 00180 00181 } // end of namespace PLearn 00182 00183 #endif 00184 00185 00186 /* 00187 Local Variables: 00188 mode:c++ 00189 c-basic-offset:4 00190 c-file-style:"stroustrup" 00191 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00192 indent-tabs-mode:nil 00193 fill-column:79 00194 End: 00195 */ 00196 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :