PLearn 0.1
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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 :