PLearn 0.1
MeanImputationVMatrix.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, 2006 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: MeanImputationVMatrix.h 3658 2005-07-06 20:30:15  Godbout $
00040  ****************************************************************** */
00041 
00042 
00045 #ifndef MeanImputationVMatrix_INC
00046 #define MeanImputationVMatrix_INC
00047 
00048 #include "SourceVMatrix.h"
00049 #include <plearn_learners/distributions/PDistribution.h>
00050 
00051 namespace PLearn {
00052 using namespace std;
00053 
00055 
00056 class MeanImputationVMatrix: public SourceVMatrix
00057 {
00058     typedef SourceVMatrix inherited;
00059 
00060 private:
00061 
00062     bool obtained_inputsize_from_source;
00063     bool obtained_targetsize_from_source;
00064     bool obtained_weightsize_from_source;
00065 
00068     mutable Vec cond_mean;
00069 
00070     Vec     variable_mean;
00071 
00073     mutable Vec tmp_target;
00074 
00075 public:
00076 
00077     PP<PDistribution> distribution;
00078     string  distribution_access_to_target;
00079     real    number_of_train_samples;
00080     VMat    mean_source;
00081 
00082 public:
00083 
00084     MeanImputationVMatrix();
00085     MeanImputationVMatrix(VMat the_source,
00086                           real the_number_of_train_samples = 0.0,
00087                           bool call_build_ = true);
00088 
00089 
00090 
00091     virtual void       build();
00092     virtual void       makeDeepCopyFromShallowCopy(CopiesMap& copies);
00093 
00094 protected:
00095 
00096     static void        declareOptions(OptionList &ol);
00097 
00098 public:
00099 
00100     virtual void getNewRow(int i, const Vec& v) const;
00101 
00102     Vec getMeanVector();
00103 
00104 private:
00105 
00106     void       build_();
00107     void       computeMeanVector();
00108 
00109     PLEARN_DECLARE_OBJECT(MeanImputationVMatrix);
00110 
00111 };
00112 
00113 DECLARE_OBJECT_PTR(MeanImputationVMatrix);
00114 
00115 } // end of namespace PLearn
00116 #endif
00117 
00118 
00119 /*
00120   Local Variables:
00121   mode:c++
00122   c-basic-offset:4
00123   c-file-style:"stroustrup"
00124   c-file-offsets:((innamespace . 0)(inline-open . 0))
00125   indent-tabs-mode:nil
00126   fill-column:79
00127   End:
00128 */
00129 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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