PLearn 0.1
MissingIndicatorVMatrix.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: MissingIndicatorVMatrix.h 3658 2005-07-06 20:30:15  Godbout $
00040    ****************************************************************** */
00041 
00044 #ifndef MissingIndicatorVMatrix_INC
00045 #define MissingIndicatorVMatrix_INC
00046 
00047 #include <plearn/vmat/SourceVMatrix.h>
00048 #include <plearn/math/BottomNI.h>
00049 
00050 namespace PLearn {
00051 using namespace std;
00052 
00053 class MissingIndicatorVMatrix: public VMatrix
00054 {
00055   typedef VMatrix inherited;
00056   
00057 public:
00058 
00060   VMat         source;
00061   
00065   VMat         train_set;
00066   
00069   real         number_of_train_samples_to_use;
00070 
00072   TVec<string> fields; 
00073   string       save_fields_with_missing;
00074 
00075                         MissingIndicatorVMatrix();
00076                         MissingIndicatorVMatrix(VMat the_source, VMat the_train_set, real the_number_of_train_samples_to_use);
00077   virtual               ~MissingIndicatorVMatrix();
00078 
00079   static void           declareOptions(OptionList &ol);
00080 
00081   virtual void          build();
00082   virtual void          makeDeepCopyFromShallowCopy(CopiesMap& copies);
00083 
00084   virtual void         getExample(int i, Vec& input, Vec& target, real& weight);
00085   virtual real         get(int i, int j) const;
00086   virtual void         getColumn(int i, Vec v) const;
00087 
00088 private:
00089   
00090   int          source_inputsize;
00091   Vec          source_input;
00092   TVec<int>    source_rel_pos;
00093 
00094           void         build_();
00095           void         buildNewRecordFormat();
00096   
00097   PLEARN_DECLARE_OBJECT(MissingIndicatorVMatrix);
00098 
00099 };
00100 
00101 DECLARE_OBJECT_PTR(MissingIndicatorVMatrix);
00102 
00103 } // end of namespcae PLearn
00104 #endif
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