PLearn 0.1
RowOfVariable.cc
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00001 // -*- C++ -*-
00002 
00003 // PLearn (A C++ Machine Learning Library)
00004 // Copyright (C) 1998 Pascal Vincent
00005 // Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
00006 // Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal
00007 // Copyright (C) 2002 Xiangdong Wang, Christian Dorion
00008 
00009 // Redistribution and use in source and binary forms, with or without
00010 // modification, are permitted provided that the following conditions are met:
00011 // 
00012 //  1. Redistributions of source code must retain the above copyright
00013 //     notice, this list of conditions and the following disclaimer.
00014 // 
00015 //  2. Redistributions in binary form must reproduce the above copyright
00016 //     notice, this list of conditions and the following disclaimer in the
00017 //     documentation and/or other materials provided with the distribution.
00018 // 
00019 //  3. The name of the authors may not be used to endorse or promote
00020 //     products derived from this software without specific prior written
00021 //     permission.
00022 // 
00023 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00024 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00025 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00026 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00027 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00028 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033 // 
00034 // This file is part of the PLearn library. For more information on the PLearn
00035 // library, go to the PLearn Web site at www.plearn.org
00036 
00037 
00038 /* *******************************************************      
00039  * $Id: RowOfVariable.cc 6861 2007-04-09 19:04:15Z saintmlx $
00040  * This file is part of the PLearn library.
00041  ******************************************************* */
00042 
00043 #include "RowOfVariable.h"
00044 #include <plearn/sys/PLMPI.h>
00045 #include <plearn/display/DisplayUtils.h>
00046 
00047 namespace PLearn {
00048 using namespace std;
00049 
00050 
00051 
00054 PLEARN_IMPLEMENT_OBJECT(RowOfVariable,
00055                         "Variable that outputs the rows at certain indexes in a VMat",
00056                         "");
00057 
00058 RowOfVariable::RowOfVariable(VMat the_distr, Var the_index)
00059     : inherited(the_index,the_distr->width(),1), distr(the_distr)
00060 {
00061     build_();
00062 }
00063 
00064 void
00065 RowOfVariable::build()
00066 {
00067     inherited::build();
00068     build_();
00069 }
00070 
00071 void
00072 RowOfVariable::build_()
00073 {
00074 }
00075 
00076 void
00077 RowOfVariable::declareOptions(OptionList &ol)
00078 {
00079     declareOption(ol, "distr", &RowOfVariable::distr, OptionBase::buildoption, "VMat containing the rows to output");
00080     inherited::declareOptions(ol);
00081 }
00082 
00083 
00084 void RowOfVariable::recomputeSize(int& l, int& w) const
00085 {
00086     if (input && distr) {
00087         w = distr->width();
00088         l = input->nelems();
00089     } else
00090         l = w = 0;
00091 }
00092 
00093 
00094 void RowOfVariable::makeDeepCopyFromShallowCopy(CopiesMap& copies)
00095 {
00096     inherited::makeDeepCopyFromShallowCopy(copies);
00097     deepCopyField(distr, copies);
00098 }
00099 
00100 
00101 void RowOfVariable::fprop()
00102 {
00103     for(int i=0; i<input->nelems(); i++)
00104         distr->getRow((int)input->valuedata[i],matValue(i));
00105 }
00106 
00107 
00108 void RowOfVariable::bprop()
00109 { }
00110 
00111 
00112 void RowOfVariable::fbprop()
00113 {}
00114 
00115 
00116 void RowOfVariable::symbolicBprop()
00117 {PLERROR("RowOfVariable::symbolicBprop(): not implemented");}
00118 
00119 void RowOfVariable::rfprop()
00120 {PLERROR("RowOfVariable::symbolicBprop(): not implemented");}
00121 
00122 } // end of namespace PLearn
00123 
00124 
00125 /*
00126   Local Variables:
00127   mode:c++
00128   c-basic-offset:4
00129   c-file-style:"stroustrup"
00130   c-file-offsets:((innamespace . 0)(inline-open . 0))
00131   indent-tabs-mode:nil
00132   fill-column:79
00133   End:
00134 */
00135 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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