PLearn 0.1
JoinVMatrix.h
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00001 // -*- C++ -*-
00002 
00003 // PLearn ("A C++ Machine Learning Library")
00004 // Copyright (C) 2002 Julien Keable and Pascal Vincent
00005 //
00006 
00007 // Redistribution and use in source and binary forms, with or without
00008 // modification, are permitted provided that the following conditions are met:
00009 //
00010 //  1. Redistributions of source code must retain the above copyright
00011 //     notice, this list of conditions and the following disclaimer.
00012 //
00013 //  2. Redistributions in binary form must reproduce the above copyright
00014 //     notice, this list of conditions and the following disclaimer in the
00015 //     documentation and/or other materials provided with the distribution.
00016 //
00017 //  3. The name of the authors may not be used to endorse or promote
00018 //     products derived from this software without specific prior written
00019 //     permission.
00020 //
00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031 //
00032 // This file is part of the PLearn library. For more information on the PLearn
00033 // library, go to the PLearn Web site at www.plearn.org
00034 
00035 /* *******************************************************
00036  * $Id: JoinVMatrix.h 8916 2008-04-30 14:12:24Z nouiz $
00037  * This file is part of the PLearn library.
00038  ******************************************************* */
00039 
00040 #ifndef JOINVMATRIX_H
00041 #define JOINVMATRIX_H
00042 
00043 #include "RowBufferedVMatrix.h"
00044 #include <plearn/math/TMat_maths.h>
00045 #include "VMat.h"
00046 #include <map>
00047 
00048 #include <vector>
00049 
00050 namespace PLearn {
00051 using namespace std;
00052 
00053 
00054 struct JoinFieldStat
00055 {
00056     enum statType { COUNT, NNONMISSING, NMISSING, SUM, SUMSQUARE,
00057                     MEAN, VARIANCE, STDDEV, STDERR,
00058                     MIN, MAX };
00059     int from, to;
00060     statType stat;
00061     JoinFieldStat(){};
00062     JoinFieldStat(int f, int t, statType st)
00063         : from(f), to(t), stat(st)
00064     {}
00065 };
00066 
00067 /* TODO : preserve string mappings for fields that remain
00068  */
00069 
00070 
00071 class JoinVMatrix : public RowBufferedVMatrix
00072 {
00073     typedef RowBufferedVMatrix inherited;
00074 
00076     typedef hash_multimap<Vec,int> Maptype;
00077 
00078     vector<JoinFieldStat> fld;
00079     VMat master,slave;
00080     Vec temp, tempkey;
00081     TVec<int> master_idx;
00082     TVec<int> slave_idx;
00083     Maptype mp;
00084 
00085 public:
00086 
00087     JoinVMatrix(){};
00088     JoinVMatrix(VMat mas,VMat sla,TVec<int> mi, TVec<int> si);
00089     void addStatField(const string & statis,const string & namefrom,const string & nameto);
00090 
00091     PLEARN_DECLARE_OBJECT(JoinVMatrix);
00092     static void declareOptions(OptionList &ol);
00093 
00094     virtual void build();
00095 
00096 protected:
00097 
00098     virtual void getNewRow(int idx, const Vec& v) const;
00099 
00100 public:
00101 
00102     virtual string getValString(int col, real val) const;
00103     virtual const map<string,real>& getStringToRealMapping(int col) const;
00104     virtual const map<real,string>& getRealToStringMapping(int col) const;
00105     virtual real getStringVal(int col, const string & str) const;
00106     virtual string getString(int row,int col) const;
00107 
00108 private:
00109     void build_();
00110 };
00111 
00112 DECLARE_OBJECT_PTR(JoinVMatrix);
00113 
00114 } // end of namespace PLearn
00115 
00116 #endif // JOINVMATRIX_H
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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