00001 /*********************************************************************** 00002 Moses - statistical machine translation system 00003 Copyright (C) 2006-2012 University of Edinburgh 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Lesser General Public 00007 License as published by the Free Software Foundation; either 00008 version 2.1 of the License, or (at your option) any later version. 00009 00010 This library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Lesser General Public License for more details. 00014 00015 You should have received a copy of the GNU Lesser General Public 00016 License along with this library; if not, write to the Free Software 00017 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00018 ***********************************************************************/ 00019 00020 #pragma once 00021 #ifndef PCFG_SCORE_TREE_SCORER_H_ 00022 #define PCFG_SCORE_TREE_SCORER_H_ 00023 00024 #include "SyntaxTree.h" 00025 00026 #include "syntax-common/vocabulary.h" 00027 #include "syntax-common/pcfg.h" 00028 00029 namespace MosesTraining 00030 { 00031 namespace Syntax 00032 { 00033 namespace PCFG 00034 { 00035 00036 class TreeScorer 00037 { 00038 public: 00039 TreeScorer(const Pcfg &, const Vocabulary &); 00040 00041 // Score tree according to PCFG. Returns false if unsuccessful (due to 00042 // missing rule). 00043 bool Score(SyntaxTree &); 00044 00045 private: 00046 const Pcfg &pcfg_; 00047 const Vocabulary &non_term_vocab_; 00048 std::map<SyntaxTree *, double> scores_; 00049 00050 bool CalcScores(SyntaxTree &); 00051 void SetAttributes(SyntaxTree &); 00052 void ZeroScores(SyntaxTree &); 00053 }; 00054 00055 } // namespace PCFG 00056 } // namespace Syntax 00057 } // namespace MosesTraining 00058 00059 #endif