PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PythonFeatureSet.cc 00004 // 00005 // Copyright (C) 2006 Hugo Larochelle 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: Hugo Larochelle 00036 00040 #include "PythonFeatureSet.h" 00041 00042 namespace PLearn { 00043 using namespace std; 00044 00045 PLEARN_IMPLEMENT_OBJECT( 00046 PythonFeatureSet, 00047 "FeatureSet with features being defined using a python script.", 00048 "The python script should define a getNewFeaturesString function\n" 00049 "which has to output a vector of string features for the input token.\n" 00050 ); 00051 00052 PythonFeatureSet::PythonFeatureSet() 00053 : python() 00054 {} 00055 00056 // ### Nothing to add here, simply calls build_ 00057 void PythonFeatureSet::build() 00058 { 00059 inherited::build(); 00060 build_(); 00061 } 00062 00063 void PythonFeatureSet::makeDeepCopyFromShallowCopy(CopiesMap& copies) 00064 { 00065 inherited::makeDeepCopyFromShallowCopy(copies); 00066 //deepCopyField(python, copies); 00067 //PLERROR("PythonFeatureSet::makeDeepCopyFromShallowCopy not fully (correctly) implemented yet!"); 00068 } 00069 00070 void PythonFeatureSet::declareOptions(OptionList& ol) 00071 { 00072 declareOption(ol, "code", &PythonFeatureSet::code, 00073 OptionBase::buildoption, 00074 "Snippet of python code that outputs the features"); 00075 00076 // Now call the parent class' declareOptions 00077 inherited::declareOptions(ol); 00078 } 00079 00080 void PythonFeatureSet::build_() 00081 { 00082 if (code != "") 00083 { 00084 python = new PythonCodeSnippet(code); 00085 PLASSERT( python ); 00086 python->build(); 00087 } 00088 00089 } 00090 00091 void PythonFeatureSet::getNewFeaturesString(string token, TVec<string>& feats_str) 00092 { 00093 f_str.resize(1); 00094 f_str[0] = token; 00095 if(!python) build_(); 00096 f_str = python->invoke("getNewFeaturesString",f_str).as<TVec<string> >(); 00097 feats_str.resize(f_str.length()); 00098 feats_str << f_str; 00099 } 00100 00101 } // end of namespace PLearn 00102 00103 00104 /* 00105 Local Variables: 00106 mode:c++ 00107 c-basic-offset:4 00108 c-file-style:"stroustrup" 00109 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00110 indent-tabs-mode:nil 00111 fill-column:79 00112 End: 00113 */ 00114 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :