PLearn 0.1
SelectRowsFileIndexVMatrix.h
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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.h 8239 2007-11-09 15:35:34Z nouiz $
00039  ******************************************************* */
00040 
00041 
00044 #ifndef SelectRowsFileIndexVMatrix_INC
00045 #define SelectRowsFileIndexVMatrix_INC
00046 
00047 #include "VMat.h"
00048 #include <plearn/io/IntVecFile.h>
00049 
00050 namespace PLearn {
00051 using namespace std;
00052 
00053 
00058 class SelectRowsFileIndexVMatrix: public VMatrix
00059 {
00060     typedef VMatrix inherited;
00061 
00062 protected:
00063     VMat distr;
00064     IntVecFile indices;
00065     string index_file;
00066 public:
00067     // ******************
00068     // *  Constructors  *
00069     // ******************
00070     SelectRowsFileIndexVMatrix(); 
00071 
00073     SelectRowsFileIndexVMatrix(VMat the_distr, const string& indexfile);
00074 
00075     PLEARN_DECLARE_OBJECT(SelectRowsFileIndexVMatrix);
00076     static void declareOptions(OptionList &ol);
00077 
00078     virtual void build();
00079 
00080     virtual real get(int i, int j) const;
00081     virtual void getSubRow(int i, int j, Vec v) const;
00082     virtual void getRow(int i, Vec v) const;
00083     virtual real getStringVal(int col, const string & str) const;
00084     virtual string getValString(int col, real val) const;
00085     virtual string getString(int row,int col) const;
00086     virtual const map<string,real>& getStringToRealMapping(int col) const;
00087 
00088     virtual real dot(int i1, int i2, int inputsize) const;
00089     virtual real dot(int i, const Vec& v) const;
00090     virtual void reset_dimensions() { distr->reset_dimensions(); width_=distr->width(); }
00091 private:
00092     void build_();
00093 };
00094 
00095 DECLARE_OBJECT_PTR(SelectRowsFileIndexVMatrix);
00096 
00097 } // end of namespace PLearn
00098 #endif
00099 
00100 
00101 /*
00102   Local Variables:
00103   mode:c++
00104   c-basic-offset:4
00105   c-file-style:"stroustrup"
00106   c-file-offsets:((innamespace . 0)(inline-open . 0))
00107   indent-tabs-mode:nil
00108   fill-column:79
00109   End:
00110 */
00111 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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