PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 1999-2001 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal 00006 // Copyright (C) 2002 Pascal Vincent, Julien Keable, Xavier Saint-Mleux 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are met: 00010 // 00011 // 1. Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // 00014 // 2. Redistributions in binary form must reproduce the above copyright 00015 // notice, this list of conditions and the following disclaimer in the 00016 // documentation and/or other materials provided with the distribution. 00017 // 00018 // 3. The name of the authors may not be used to endorse or promote 00019 // products derived from this software without specific prior written 00020 // permission. 00021 // 00022 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00023 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00025 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00027 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 // This file is part of the PLearn library. For more information on the PLearn 00034 // library, go to the PLearn Web site at www.plearn.org 00035 00036 00037 /* ******************************************************* 00038 * $Id: RemapLastColumnVMatrix.h 8239 2007-11-09 15:35:34Z nouiz $ 00039 ******************************************************* */ 00040 00041 00044 #ifndef RemapLastColumnVMatrix_INC 00045 #define RemapLastColumnVMatrix_INC 00046 00047 #include "SourceVMatrix.h" 00048 #include "VMat.h" 00049 00050 namespace PLearn { 00051 using namespace std; 00052 00053 class RemapLastColumnVMatrix: public SourceVMatrix 00054 { 00055 typedef SourceVMatrix inherited; 00056 00057 protected: 00058 // DEPRECATED - use 'source' instead 00059 // VMat underlying_distr; 00060 00062 Mat mapping; 00063 00069 real if_equals_val; 00070 real then_val; 00071 real else_val; 00072 00073 public: 00074 // ****************** 00075 // * Constructors * 00076 // ****************** 00077 00079 RemapLastColumnVMatrix(bool call_build_=false); 00080 00083 RemapLastColumnVMatrix(VMat the_source, Mat the_mapping, 00084 bool call_build_=false); 00085 00088 RemapLastColumnVMatrix(VMat the_source, 00089 real if_equals_value, 00090 real then_value=+1, 00091 real else_value=-1, 00092 bool call_build_=false); 00093 00094 PLEARN_DECLARE_OBJECT(RemapLastColumnVMatrix); 00095 static void declareOptions(OptionList &ol); 00096 00097 virtual void build(); 00098 00099 virtual void getNewRow(int i, const Vec& samplevec) const; 00100 virtual void reset_dimensions() 00101 { 00102 source->reset_dimensions(); 00103 00104 if( mapping.isEmpty() ) 00105 width_=source->width(); 00106 else 00107 width_=source->width()+mapping.width()-2; 00108 00109 length_=source->length(); 00110 } 00111 private: 00112 void build_(); 00113 }; 00114 00115 inline VMat remapLastColumn(VMat s, Mat mapping, bool call_build_=false) 00116 { return new RemapLastColumnVMatrix(s, mapping, call_build_); } 00117 00118 inline VMat remapLastColumn(VMat s, real if_equals_value, 00119 real then_value=1.0, real else_value=-1.0, 00120 bool call_build_=false) 00121 { return new RemapLastColumnVMatrix(s, if_equals_value, 00122 then_value, else_value, call_build_); } 00123 00124 DECLARE_OBJECT_PTR(RemapLastColumnVMatrix); 00125 00126 } // end of namespace PLearn 00127 #endif 00128 00129 00130 /* 00131 Local Variables: 00132 mode:c++ 00133 c-basic-offset:4 00134 c-file-style:"stroustrup" 00135 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00136 indent-tabs-mode:nil 00137 fill-column:79 00138 End: 00139 */ 00140 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :