mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2024-12-28 14:32:38 +03:00
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
#include <sstream>
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#include "PhraseLengthFeature.h"
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#include "Hypothesis.h"
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#include "ScoreComponentCollection.h"
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#include "TranslationOption.h"
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namespace Moses {
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using namespace std;
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PhraseLengthFeature::PhraseLengthFeature(const std::string &line)
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:StatelessFeatureFunction("pl", ScoreProducer::unlimited)
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{
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}
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void PhraseLengthFeature::Evaluate(
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const PhraseBasedFeatureContext& context,
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ScoreComponentCollection* accumulator) const
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{
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// get length of source and target phrase
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size_t targetLength = context.GetTargetPhrase().GetSize();
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size_t sourceLength = context.GetTranslationOption().GetSourceWordsRange().GetNumWordsCovered();
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// create feature names
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stringstream nameSource;
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nameSource << "s" << sourceLength;
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stringstream nameTarget;
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nameTarget << "t" << targetLength;
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stringstream nameBoth;
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nameBoth << sourceLength << "," << targetLength;
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// increase feature counts
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accumulator->PlusEquals(this,nameSource.str(),1);
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accumulator->PlusEquals(this,nameTarget.str(),1);
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accumulator->PlusEquals(this,nameBoth.str(),1);
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//cerr << nameSource.str() << " " << nameTarget.str() << " " << nameBoth.str() << endl;
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}
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}
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