PLearn 0.1
OneVsAllVMatrix.cc
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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 :
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