PLearn 0.1
SelectRowsFileIndexVMatrix.cc
Go to the documentation of this file.
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: SelectRowsFileIndexVMatrix.cc 8617 2008-03-03 17:45:54Z nouiz $
00039  ******************************************************* */
00040 
00041 #include "SelectRowsFileIndexVMatrix.h"
00042 
00043 namespace PLearn {
00044 using namespace std;
00045 
00048 PLEARN_IMPLEMENT_OBJECT(SelectRowsFileIndexVMatrix, "ONE LINE DESC", "NO HELP");
00049 
00050 SelectRowsFileIndexVMatrix::SelectRowsFileIndexVMatrix()
00051 {
00052 }
00053 
00054 SelectRowsFileIndexVMatrix::SelectRowsFileIndexVMatrix(VMat the_distr, const string& indexfile)
00055     : inherited(0,the_distr->width()), distr(the_distr), indices(indexfile), index_file(indexfile)
00056 {
00057     build();
00058 }
00059 
00060 void
00061 SelectRowsFileIndexVMatrix::build()
00062 {
00063     inherited::build();
00064     build_();
00065 }
00066 
00067 void
00068 SelectRowsFileIndexVMatrix::build_()
00069 {
00070     if (distr) {
00071         updateMtime(distr);
00072         fieldinfos = distr->fieldinfos;
00073         length_ = indices.length();
00074         if (length_ == -1) {
00075             indices.open(index_file);
00076             length_ = indices.length();
00077         }
00078         width_= distr->width();
00079         defineSizes(distr->inputsize(), distr->targetsize(), distr->weightsize());
00080     }
00081 }
00082 
00083 void
00084 SelectRowsFileIndexVMatrix::declareOptions(OptionList &ol)
00085 {
00086     declareOption(ol, "distr", &SelectRowsFileIndexVMatrix::distr, OptionBase::buildoption, "");
00087     declareOption(ol, "index_file", &SelectRowsFileIndexVMatrix::index_file, OptionBase::buildoption, "");
00088     inherited::declareOptions(ol);
00089 }
00090 
00091 real SelectRowsFileIndexVMatrix::get(int i, int j) const
00092 { return distr->get(indices[i], j); }
00093 
00094 void SelectRowsFileIndexVMatrix::getSubRow(int i, int j, Vec v) const
00095 { distr->getSubRow(indices[i], j, v); }
00096 
00097 void SelectRowsFileIndexVMatrix::getRow(int i, Vec v) const
00098 { distr->getRow(indices[i], v); }
00099 
00100 real SelectRowsFileIndexVMatrix::dot(int i1, int i2, int inputsize) const
00101 { return distr->dot(indices[i1],indices[i2],inputsize); }
00102 
00103 real SelectRowsFileIndexVMatrix::dot(int i, const Vec& v) const
00104 { return distr->dot(indices[i],v); }
00105 
00106 real SelectRowsFileIndexVMatrix::getStringVal(int col, const string & str) const
00107 { return distr->getStringVal(col, str); }
00108 
00109 string SelectRowsFileIndexVMatrix::getValString(int col, real val) const
00110 { return distr->getValString(col,val); }
00111 
00112 string SelectRowsFileIndexVMatrix::getString(int row, int col) const
00113 { return distr->getString(indices[row], col); }
00114 
00115 const map<string,real>& SelectRowsFileIndexVMatrix::getStringToRealMapping(int col) const
00116 { return distr->getStringToRealMapping(col);}
00117 
00118 } // end of namespace PLearn
00119 
00120 
00121 /*
00122   Local Variables:
00123   mode:c++
00124   c-basic-offset:4
00125   c-file-style:"stroustrup"
00126   c-file-offsets:((innamespace . 0)(inline-open . 0))
00127   indent-tabs-mode:nil
00128   fill-column:79
00129   End:
00130 */
00131 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines