00001 00002 // 00003 // FreeLing - Open Source Language Analyzers 00004 // 00005 // Copyright (C) 2004 TALP Research Center 00006 // Universitat Politecnica de Catalunya 00007 // 00008 // This library is free software; you can redistribute it and/or 00009 // modify it under the terms of the GNU General Public 00010 // License as published by the Free Software Foundation; either 00011 // version 2.1 of the License, or (at your option) any later version. 00012 // 00013 // This library is distributed in the hope that it will be useful, 00014 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 // General Public License for more details. 00017 // 00018 // You should have received a copy of the GNU General Public 00019 // License along with this library; if not, write to the Free Software 00020 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00021 // 00022 // contact: Lluis Padro (padro@lsi.upc.es) 00023 // TALP Research Center 00024 // despatx C6.212 - Campus Nord UPC 00025 // 08034 Barcelona. SPAIN 00026 // 00028 00029 #ifndef _POS_TAGGER 00030 #define _POS_TAGGER 00031 00032 #include <list> 00033 #include "fries/language.h" 00034 00035 #define FORCE_NONE 0 // no selection forced 00036 #define FORCE_TAGGER 1 // force select after tagger 00037 #define FORCE_RETOK 2 // force select after retokenization 00038 00044 00045 class POS_tagger { 00046 00047 protected: 00048 // remember whether retokenization is active 00049 bool retok; 00050 // remember whether the user asked to force only one tag per word 00051 unsigned int force; 00052 // retokenize words that may need it after tagging 00053 void retokenize(std::list<sentence> &); 00054 // force the selection of only one Pos tag per word 00055 void force_select(std::list<sentence> &); 00056 00057 public: 00058 POS_tagger(bool,unsigned int); 00059 virtual ~POS_tagger() {}; 00060 virtual void analyze(std::list<sentence> &)=0; 00061 }; 00062 00063 00064 #endif