mosesdecoder/moses/TranslationModel/RuleTable/Trie.h
Ulrich Germann e4f5c69109 One step closer to eliminating the requirement to provide num-features=... in the config file.
Some FF (Mmsapt, LexicalReordering, Many single-value FF) provide this number during "registration";
when missing, a default weight vector of uniform 1.0 is automatically generated. This eliminates the
need for the user to figure out what the exact number of features is for each FF, which can get complicated,
e.g. in the case of Mmsapt/PhraseDictionaryBitextSampling.
2015-04-29 20:16:52 +01:00

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1.8 KiB
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/***********************************************************************
Moses - statistical machine translation system
Copyright (C) 2006-2012 University of Edinburgh
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
***********************************************************************/
#pragma once
#include "moses/TranslationModel/PhraseDictionary.h"
#include "moses/TypeDef.h"
#include <string>
#include <vector>
namespace Moses
{
class Phrase;
class TargetPhrase;
class TargetPhraseCollection;
class Word;
/*** Implementation of a SCFG rule table in a trie. Looking up a rule of
* length n symbols requires n look-ups to find the TargetPhraseCollection.
* @todo why need this and PhraseDictionaryMemory?
*/
class RuleTableTrie : public PhraseDictionary
{
public:
RuleTableTrie(const std::string &line)
: PhraseDictionary(line, true) {
}
virtual ~RuleTableTrie();
void Load();
private:
friend class RuleTableLoader;
virtual TargetPhraseCollection &GetOrCreateTargetPhraseCollection(
const Phrase &source, const TargetPhrase &target,
const Word *sourceLHS) = 0;
virtual void SortAndPrune() = 0;
};
} // namespace Moses