PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // RandomNeighborsDifferencesVMatrix.h 00004 // 00005 // Copyright (C) 2004 Martin Monperrus 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: RandomNeighborsDifferencesVMatrix.h 5557 2006-05-10 20:36:58Z lamblin $ 00037 ******************************************************* */ 00038 00039 // Authors: Martin Monperrus & Yoshua Bengio 00040 00044 #ifndef RandomNeighborsDifferencesVMatrix_INC 00045 #define RandomNeighborsDifferencesVMatrix_INC 00046 00047 #include "SourceVMatrix.h" 00048 00049 namespace PLearn { 00050 using namespace std; 00051 00052 class RandomNeighborsDifferencesVMatrix: public SourceVMatrix 00053 { 00054 00055 private: 00056 00057 typedef SourceVMatrix inherited; 00058 00060 mutable Vec neighbor_row, ith_row, diff_k; 00061 00062 protected: 00063 // NON-OPTION FIELDS 00064 00065 // ********************* 00066 // * protected options * 00067 // ********************* 00068 00069 public: 00070 00071 // ************************ 00072 // * public build options * 00073 // ************************ 00074 00075 // ### declare public option fields (such as build options) here 00076 // ... 00077 int n_neighbors; 00078 bool append_current_point_indexe; 00079 bool append_random_neighbors_indexes; 00080 00081 // **************** 00082 // * Constructors * 00083 // **************** 00084 00085 // Default constructor, make sure the implementation in the .cc 00086 // initializes all fields to reasonable default values. 00087 RandomNeighborsDifferencesVMatrix(); 00088 00089 // ****************** 00090 // * Object methods * 00091 // ****************** 00092 00093 private: 00095 // (Please implement in .cc) 00096 void build_(); 00097 00098 protected: 00100 // (Please implement in .cc) 00101 static void declareOptions(OptionList& ol); 00102 00104 virtual void getNewRow(int i, const Vec& v) const; 00105 00106 public: 00107 // simply calls inherited::build() then build_() 00108 virtual void build(); 00109 00111 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00112 00114 PLEARN_DECLARE_OBJECT(RandomNeighborsDifferencesVMatrix); 00115 00116 }; 00117 DECLARE_OBJECT_PTR(RandomNeighborsDifferencesVMatrix); 00118 00119 inline VMat random_neighbors_differences(VMat source, int n_neighbors, bool append_current_point_indexe = false, bool append_random_neighbors_indexes = false) 00120 { 00121 RandomNeighborsDifferencesVMatrix* vmat = new RandomNeighborsDifferencesVMatrix(); 00122 vmat->source=source; 00123 vmat->n_neighbors=n_neighbors; 00124 vmat->append_current_point_indexe = append_current_point_indexe; 00125 vmat->append_random_neighbors_indexes = append_random_neighbors_indexes; 00126 vmat->build(); 00127 return vmat; 00128 } 00129 00130 } // end of namespace PLearn 00131 #endif 00132 00133 00134 /* 00135 Local Variables: 00136 mode:c++ 00137 c-basic-offset:4 00138 c-file-style:"stroustrup" 00139 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00140 indent-tabs-mode:nil 00141 fill-column:79 00142 End: 00143 */ 00144 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :