PLearn 0.1
VariableDeletionVMatrix.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: VariableDeletionVMatrix.h 3658 2005-07-06 20:30:15  Godbout $
00040  ******************************************************************** */
00041 
00042 
00043 
00044 #ifndef VariableDeletionVMatrix_INC
00045 #define VariableDeletionVMatrix_INC
00046 
00047 #include "SelectColumnsVMatrix.h"
00048 
00049 namespace PLearn {
00050 using namespace std;
00051 
00052 class VariableDeletionVMatrix: public SelectColumnsVMatrix
00053 {
00054     typedef SelectColumnsVMatrix inherited;
00055 
00056 public:
00057 
00058     real    min_non_missing_threshold;
00059     real    max_constant_threshold;
00060     int     number_of_train_samples;
00061     bool    warn_removed_var;
00062     bool    info_var_with_missing;
00063 
00064     VMat    train_set;
00065     string  save_deleted_columns;
00066 
00067     // Deprecated.
00068     VMat       complete_dataset;
00069     real       deletion_threshold;
00070     int        remove_columns_with_constant_value;
00071 public:
00072 
00073     VariableDeletionVMatrix();
00074 
00075     VariableDeletionVMatrix(VMat the_source,
00076                             real the_min_non_missing_threshold,
00077                             bool the_remove_columns_with_constant_value,
00078                             int  the_number_of_train_samples,
00079                             bool call_build_ = true);
00080 
00081     virtual void build();
00082     virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies);
00083 
00084 protected:
00085 
00086     static void declareOptions(OptionList &ol);
00087 
00088 private:
00089 
00090     void build_();
00091     void buildIndices();
00092 
00093     PLEARN_DECLARE_OBJECT(VariableDeletionVMatrix);
00094 };
00095 
00096 DECLARE_OBJECT_PTR(VariableDeletionVMatrix);
00097 
00098 } // end of namespace PLearn
00099 #endif
00100 
00101 
00102 /*
00103   Local Variables:
00104   mode:c++
00105   c-basic-offset:4
00106   c-file-style:"stroustrup"
00107   c-file-offsets:((innamespace . 0)(inline-open . 0))
00108   indent-tabs-mode:nil
00109   fill-column:79
00110   End:
00111 */
00112 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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