PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // OneVsAllVMatrix.cc 00004 // 00005 // Copyright (C) 2005 Hugo Larochelle 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: .pyskeleton_header,v 1.1 2003/09/01 00:05:31 plearner Exp $ 00037 ******************************************************* */ 00038 00039 // Authors: Hugo Larochelle 00040 00044 #include "OneVsAllVMatrix.h" 00045 00046 namespace PLearn { 00047 using namespace std; 00048 00050 // OneVsAllVMatrix // 00052 OneVsAllVMatrix::OneVsAllVMatrix() 00053 : inherited(), 00054 target_class(0) 00055 { 00056 00057 } 00058 00059 OneVsAllVMatrix::OneVsAllVMatrix(VMat the_source, int the_target_class, 00060 bool inverse_target) 00061 : inherited(the_source), 00062 target_class(the_target_class), 00063 inverse_target(inverse_target) 00064 { 00065 build(); 00066 } 00067 00068 00069 PLEARN_IMPLEMENT_OBJECT(OneVsAllVMatrix, 00070 "Changes the target so that it is 1 if the target is equal to target_class, 0 if not", 00071 "" 00072 ); 00073 00075 // declareOptions // 00077 void OneVsAllVMatrix::declareOptions(OptionList& ol) 00078 { 00079 // Now call the parent class' declareOptions 00080 inherited::declareOptions(ol); 00081 } 00082 00084 // build // 00086 void OneVsAllVMatrix::build() 00087 { 00088 inherited::build(); 00089 build_(); 00090 } 00091 00093 // build_ // 00095 void OneVsAllVMatrix::build_() 00096 { 00097 if(source) 00098 { 00099 if(source->targetsize() != 1) 00100 PLERROR("OneVsAllVMatrix::build_(): targetsize_ should be 1"); 00101 00102 updateMtime(source); 00103 setMetaInfoFromSource(); 00104 00105 PLCHECK(width_ == inputsize_+targetsize_+weightsize_+extrasize_); 00106 sourcerow.resize(source->width()); 00107 } 00108 } 00109 00111 // getNewRow // 00113 void OneVsAllVMatrix::getNewRow(int i, const Vec& v) const 00114 { 00115 source->getRow(i,v); 00116 bool t = int(v[inputsize_]) == target_class; 00117 v[inputsize_] = inverse_target? !t : t; 00118 } 00119 00121 // makeDeepCopyFromShallowCopy // 00123 void OneVsAllVMatrix::makeDeepCopyFromShallowCopy(CopiesMap& copies) 00124 { 00125 inherited::makeDeepCopyFromShallowCopy(copies); 00126 00127 //PLERROR("OneVsAllVMatrix::makeDeepCopyFromShallowCopy not fully (correctly) implemented yet!"); 00128 } 00129 00130 } // end of namespace PLearn 00131 00132 00133 /* 00134 Local Variables: 00135 mode:c++ 00136 c-basic-offset:4 00137 c-file-style:"stroustrup" 00138 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00139 indent-tabs-mode:nil 00140 fill-column:79 00141 End: 00142 */ 00143 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :