PLearn 0.1
TransposeVMatrix.cc
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00001 // -*- C++ -*-
00002 
00003 // TransposeVMatrix.cc
00004 //
00005 // Copyright (C) 2004 Olivier Delalleau
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: TransposeVMatrix.cc 8734 2008-03-28 17:26:50Z nouiz $
00037  ******************************************************* */
00038 
00039 // Authors: Olivier Delalleau
00040 
00044 #include "TransposeVMatrix.h"
00045 
00046 namespace PLearn {
00047 using namespace std;
00048 
00050 // TransposeVMatrix //
00052 TransposeVMatrix::TransposeVMatrix()
00053 {}
00054 
00055 TransposeVMatrix::TransposeVMatrix(const VMat& the_source)
00056 {
00057     source = the_source;
00058     build();
00059 }
00060 
00061 PLEARN_IMPLEMENT_OBJECT(TransposeVMatrix,
00062                         "A VMatrix that sees the transpose of another VMatrix.",
00063                         ""
00064     );
00065 
00067 // declareOptions //
00069 void TransposeVMatrix::declareOptions(OptionList& ol)
00070 {
00071     // ### Declare all of this object's options here
00072     // ### For the "flags" of each option, you should typically specify
00073     // ### one of OptionBase::buildoption, OptionBase::learntoption or
00074     // ### OptionBase::tuningoption. Another possible flag to be combined with
00075     // ### is OptionBase::nosave
00076 
00077     // ### ex:
00078     // declareOption(ol, "myoption", &TransposeVMatrix::myoption, OptionBase::buildoption,
00079     //               "Help text describing this option");
00080     // ...
00081 
00082     // Now call the parent class' declareOptions
00083     inherited::declareOptions(ol);
00084 }
00085 
00087 // build //
00089 void TransposeVMatrix::build()
00090 {
00091     // ### Nothing to add here, simply calls build_
00092     inherited::build();
00093     build_();
00094 }
00095 
00097 // build_ //
00099 void TransposeVMatrix::build_()
00100 {
00101     if (source) {
00102         width_ = source->length();
00103         length_ = source->width();
00104         if (inputsize_ < 0)
00105             inputsize_ = width_;
00106         if (targetsize_ < 0)
00107             targetsize_ = 0;
00108         if (weightsize_ < 0)
00109             weightsize_ = 0;
00110         setMetaInfoFromSource();
00111     }
00112 }
00113 
00115 // getNewRow //
00117 void TransposeVMatrix::getNewRow(int i, const Vec& v) const
00118 {
00119     source->getColumn(i, v);
00120 }
00121 
00123 // getColumn //
00125 void TransposeVMatrix::getColumn(int j, Vec v) const
00126 {
00127     //We do not buffer the column...
00128     source->getRow(j, v);
00129 }
00130 
00132 // getMat //
00134 void TransposeVMatrix::getMat(int i, int j, Mat m) const
00135 {
00136 #ifdef BOUNDCHECK
00137     if(i<0 || j<0 || i+m.length()>length() || j+m.width()>width())
00138         PLERROR("In VMatrix::getMat(i,j,m) OUT OF BOUNDS");
00139 #endif
00140     Vec tmp(m.length());
00141     for(int ii=0; ii<m.width(); ii++)
00142     {
00143         source->getSubRow(i+ii, j,tmp);
00144         for(int k=0;k<m.length();k++)
00145             m(k,ii)=tmp[k];
00146     }
00147 }
00148 
00150 // makeDeepCopyFromShallowCopy //
00152 void TransposeVMatrix::makeDeepCopyFromShallowCopy(CopiesMap& copies)
00153 {
00154     inherited::makeDeepCopyFromShallowCopy(copies);
00155 }
00156 
00157 } // end of namespace PLearn
00158 
00159 
00160 /*
00161   Local Variables:
00162   mode:c++
00163   c-basic-offset:4
00164   c-file-style:"stroustrup"
00165   c-file-offsets:((innamespace . 0)(inline-open . 0))
00166   indent-tabs-mode:nil
00167   fill-column:79
00168   End:
00169 */
00170 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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