PLearn 0.1
SelectRowsVMatrix.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 // Copyright (C) 2003 Olivier Delalleau
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: SelectRowsVMatrix.h 9407 2008-08-27 17:46:26Z nouiz $
00040  ******************************************************* */
00041 
00042 
00045 #ifndef SelectRowsVMatrix_INC
00046 #define SelectRowsVMatrix_INC
00047 
00048 #include "SourceVMatrix.h"
00049 
00050 namespace PLearn {
00051 using namespace std;
00052 
00055 class SelectRowsVMatrix: public SourceVMatrix
00056 {
00057 
00058 private:
00059 
00060     typedef SourceVMatrix inherited;
00061 
00062 protected:
00063 
00065     bool obtained_inputsize_from_source;
00066     bool obtained_targetsize_from_source;
00067     bool obtained_weightsize_from_source;
00068     bool obtained_extrasize_from_source;
00069 
00070     bool warn_if_all_rows_selected;
00071 
00072     TVec<int> selected_indices;
00073 
00074 public:
00075 
00077     TVec<int> indices;
00078     
00081     bool rows_to_remove;
00082 
00083     VMat indices_vmat;
00084 
00085 public:
00086     // ******************
00087     // *  Constructors  *
00088     // ******************
00089     SelectRowsVMatrix();
00090 
00093     SelectRowsVMatrix(VMat the_source, TVec<int> the_indices, bool the_rows_to_remove = false, bool warn = true);
00094 
00096     SelectRowsVMatrix(VMat the_source, Vec the_indices, bool the_rows_to_remove = false, bool warn = true);
00097 
00098     PLEARN_DECLARE_OBJECT(SelectRowsVMatrix);
00099 
00100     static void declareOptions(OptionList &ol);
00101 
00102     virtual void build();
00103     virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies);
00104 
00105 protected:
00106 
00107     void getNewRow(int i, const Vec& v) const { getSubRow(i, 0, v); }
00108 
00109 public:
00110 
00111     virtual real get(int i, int j) const;
00112     virtual void getSubRow(int i, int j, Vec v) const;
00113     virtual real getStringVal(int col, const string & str) const;
00114     virtual string getValString(int col, real val) const;
00115     virtual string getString(int row,int col) const;
00117     virtual const map<string,real>& getStringToRealMapping(int col) const;
00118     virtual const map<real,string>& getRealToStringMapping(int col) const;
00119 
00120     virtual void reset_dimensions() { source->reset_dimensions(); width_=source->width(); }
00121     virtual real dot(int i1, int i2, int inputsize) const;
00122     virtual real dot(int i, const Vec& v) const;
00123 
00126     virtual PP<Dictionary> getDictionary(int col) const;
00127     
00129     virtual void getValues(int row, int col, Vec& values) const;
00130     
00132     virtual void getValues(const Vec& input, int col, Vec& values) const;
00133 
00134 private:
00135 
00136     void build_();
00137 
00138 };
00139 
00140 DECLARE_OBJECT_PTR(SelectRowsVMatrix);
00141 
00142 } // end of namespace PLearn
00143 #endif
00144 
00145 
00146 /*
00147   Local Variables:
00148   mode:c++
00149   c-basic-offset:4
00150   c-file-style:"stroustrup"
00151   c-file-offsets:((innamespace . 0)(inline-open . 0))
00152   indent-tabs-mode:nil
00153   fill-column:79
00154   End:
00155 */
00156 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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