PLearn 0.1
GeneralizedOneHotVMatrix.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: GeneralizedOneHotVMatrix.h 8916 2008-04-30 14:12:24Z nouiz $
00039  ******************************************************* */
00040 
00041 
00044 #ifndef GeneralizedOneHotVMatrix_INC
00045 #define GeneralizedOneHotVMatrix_INC
00046 
00047 #include "SourceVMatrix.h"
00048 #include <plearn/math/TMat_maths.h>
00049 #include "VMat.h"
00050 
00051 namespace PLearn {
00052 using namespace std;
00053 
00054 
00057 class GeneralizedOneHotVMatrix: public SourceVMatrix
00058 {
00059     typedef SourceVMatrix inherited;
00060 
00061 protected:
00062 
00064     Vec index;
00066     Vec nclasses;
00068     Vec cold_value;
00070     Vec hot_value;
00071 
00072 public:
00073     // ******************
00074     // *  Constructors  *
00075     // ******************
00076 
00078     GeneralizedOneHotVMatrix(bool call_build_ = false);
00079 
00080     GeneralizedOneHotVMatrix(VMat the_source, Vec the_index, Vec the_nclasses,
00081                              Vec the_cold_value, Vec the_hot_value,
00082                              bool call_build_ = false);
00083 
00084 
00085     PLEARN_DECLARE_OBJECT(GeneralizedOneHotVMatrix);
00086 
00087 protected:
00088 
00089     virtual void getNewRow(int i, const Vec& samplevec) const;
00090     static void declareOptions(OptionList &ol);
00091 
00092 public:
00093 
00094     virtual void build();
00095 
00097     virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies);
00098 
00099     virtual void reset_dimensions()
00100     {
00101         source->reset_dimensions();
00102         width_ = source->width() + (int)sum(nclasses) - nclasses.length();
00103         length_ = source->length();
00104     }
00105 
00106 private:
00107     void build_();
00108 };
00109 
00110 DECLARE_OBJECT_PTR(GeneralizedOneHotVMatrix);
00111 
00112 } // end of namespace PLearn
00113 #endif
00114 
00115 
00116 /*
00117   Local Variables:
00118   mode:c++
00119   c-basic-offset:4
00120   c-file-style:"stroustrup"
00121   c-file-offsets:((innamespace . 0)(inline-open . 0))
00122   indent-tabs-mode:nil
00123   fill-column:79
00124   End:
00125 */
00126 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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