PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // ValueSelectRowsVMatrix.cc 00004 // 00005 // Copyright (C) 2009 Frederic Bastien 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 // Authors: Frederic Bastien 00036 00040 #include "ValueSelectRowsVMatrix.h" 00041 00042 namespace PLearn { 00043 using namespace std; 00044 00045 PLEARN_IMPLEMENT_OBJECT( 00046 ValueSelectRowsVMatrix, 00047 "Select rows based on an index column. The value should be in another VMatrix.", 00048 "MULTI-LINE \nHELP" 00049 ); 00050 00052 // ValueSelectRowsVMatrix // 00054 ValueSelectRowsVMatrix::ValueSelectRowsVMatrix() 00055 { 00056 } 00057 00059 // declareOptions // 00061 void ValueSelectRowsVMatrix::declareOptions(OptionList& ol) 00062 { 00063 // ### Declare all of this object's options here. 00064 // ### For the "flags" of each option, you should typically specify 00065 // ### one of OptionBase::buildoption, OptionBase::learntoption or 00066 // ### OptionBase::tuningoption. If you don't provide one of these three, 00067 // ### this option will be ignored when loading values from a script. 00068 // ### You can also combine flags, for example with OptionBase::nosave: 00069 // ### (OptionBase::buildoption | OptionBase::nosave) 00070 00071 declareOption(ol, "col_name", &ValueSelectRowsVMatrix::col_name, 00072 OptionBase::buildoption, 00073 "The name of the column to compare values."); 00074 00075 declareOption(ol, "col_name_sec", &ValueSelectRowsVMatrix::col_name, 00076 OptionBase::buildoption, 00077 "The name of the column to compare values for the second matrix." 00078 " If not provided, will use col_name."); 00079 00080 declareOption(ol, "second", &ValueSelectRowsVMatrix::second, 00081 OptionBase::buildoption, 00082 "The matrix that have the value that we keep the columns."); 00083 00084 inherited::declareOptions(ol); 00085 } 00086 00088 // build // 00090 void ValueSelectRowsVMatrix::build() 00091 { 00092 // ### Nothing to add here, simply calls build_ 00093 // inherited::build(); 00094 build_(); 00095 inherited::build();//must recall as we changed selected_indices 00096 } 00097 00099 // build_ // 00101 void ValueSelectRowsVMatrix::build_() 00102 { 00103 // ### This method should do the real building of the object, 00104 // ### according to set 'options', in *any* situation. 00105 // ### Typical situations include: 00106 // ### - Initial building of an object from a few user-specified options 00107 // ### - Building of a "reloaded" object: i.e. from the complete set of 00108 // ### all serialised options. 00109 // ### - Updating or "re-building" of an object after a few "tuning" 00110 // ### options have been modified. 00111 // ### You should assume that the parent class' build_() has already been 00112 // ### called. 00113 00114 // ### In a SourceVMatrix, you will typically end build_() with: 00115 // setMetaInfoFromSource(); 00116 00117 // ### You should keep the line 'updateMtime(0);' if you do not implement 00118 // ### the update of the mtime. Otherwise you can have an mtime != 0 that 00119 // ### is not valid. 00120 // ### Note that setMetaInfoFromSource() updates the mtime to the same as 00121 // ### the source, but this value will be erased with 'updateMtime(0)'. 00122 if(col_name_sec.empty()) 00123 col_name_sec=col_name; 00124 Vec values_src(source->length()), values_sec(second->length()); 00125 int idx = source->getFieldIndex(col_name,false); 00126 if(idx<0) 00127 PLERROR("In ValueSelectRowsVMatrix::build_ - the matrix source don't have the column %s", 00128 col_name.c_str()); 00129 source->getColumn(idx,values_src); 00130 idx=second->getFieldIndex(col_name_sec); 00131 if(idx<0) 00132 PLERROR("In ValueSelectRowsVMatrix::build_ - the matrix second don't have the column %s", 00133 col_name.c_str()); 00134 second->getColumn(idx,values_sec); 00135 00136 //sort values_sec as it is shorter. 00137 sortElements(values_sec); 00138 for(int i=0;i<values_src.size();i++){ 00139 real val = values_src[i]; 00140 int idx=values_sec.findSorted(val); 00141 if(values_sec[idx]==val){ 00142 indices.append(i); 00143 } 00144 } 00145 if(indices.size()!=values_sec.size()) 00146 PLWARNING("In ValueSelectRowsVMatrix::build_() - we selected less rows" 00147 " (%d) than asked(%d). Maybe some disappeared.", 00148 indices.size(), values_sec.size()); 00149 updateMtime(source); 00150 updateMtime(second); 00151 } 00152 00154 // makeDeepCopyFromShallowCopy // 00156 void ValueSelectRowsVMatrix::makeDeepCopyFromShallowCopy(CopiesMap& copies) 00157 { 00158 inherited::makeDeepCopyFromShallowCopy(copies); 00159 deepCopyField(second, copies); 00160 } 00161 00162 } // end of namespace PLearn 00163 00164 00165 /* 00166 Local Variables: 00167 mode:c++ 00168 c-basic-offset:4 00169 c-file-style:"stroustrup" 00170 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00171 indent-tabs-mode:nil 00172 fill-column:79 00173 End: 00174 */ 00175 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :