PLearn 0.1
ConcatRowsSubVMatrix.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: ConcatRowsSubVMatrix.h 8239 2007-11-09 15:35:34Z nouiz $
00039  ******************************************************* */
00040 
00041 
00044 #ifndef ConcatRowsSubVMatrix_INC
00045 #define ConcatRowsSubVMatrix_INC
00046 
00047 #include "VMat.h"
00048 #include "SourceVMatrix.h"
00049 
00050 namespace PLearn {
00051 using namespace std;
00052 
00053 
00061 class ConcatRowsSubVMatrix: public SourceVMatrix
00062 {
00063     typedef SourceVMatrix inherited;
00064 
00065 protected:
00066     // DEPRECATED - Use inherited::source instead
00067     // VMat distr;
00068     TVec<int> start;
00069     TVec<int> len;
00070 
00071     //void check(); //!<  check ranges are compatible
00072 
00075     void getpositions(int i, int& whichvm, int& rowofvm) const;
00076 
00077 public:
00078     // ******************
00079     // *  Constructors  *
00080     // ******************
00081 
00083     ConcatRowsSubVMatrix(bool call_build_ = false);
00084 
00086     ConcatRowsSubVMatrix(VMat the_source,
00087                          TVec<int>& the_start, TVec<int>& the_len,
00088                          bool call_build_ = true);
00089 
00090     ConcatRowsSubVMatrix(VMat the_source,
00091                          int start1, int len1,
00092                          int start2, int len2,
00093                          bool call_build_ = true);
00094 
00095     PLEARN_DECLARE_OBJECT(ConcatRowsSubVMatrix);
00096     static void declareOptions(OptionList &ol);
00097 
00098     virtual void build();
00099 
00100     virtual real get(int i, int j) const;
00101     virtual void getSubRow(int i, int j, Vec v) const;
00102     virtual void reset_dimensions()
00103     {
00104         source->reset_dimensions();
00105         width_=source->width();
00106         length_=0;
00107         for (int i=0;i<len.length();i++)
00108             length_ += len[i];
00109     }
00110     virtual real dot(int i1, int i2, int inputsize) const;
00111     virtual real dot(int i, const Vec& v) const;
00112 private:
00113     void build_();
00114 };
00115 
00116 DECLARE_OBJECT_PTR(ConcatRowsSubVMatrix);
00117 
00118 } // end of namespace PLearn
00119 #endif
00120 
00121 
00122 /*
00123   Local Variables:
00124   mode:c++
00125   c-basic-offset:4
00126   c-file-style:"stroustrup"
00127   c-file-offsets:((innamespace . 0)(inline-open . 0))
00128   indent-tabs-mode:nil
00129   fill-column:79
00130   End:
00131 */
00132 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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