00001 #include <stdexcept>
00002 #include "InputFeature.h"
00003 #include "moses/Util.h"
00004 #include "moses/ScoreComponentCollection.h"
00005 #include "moses/InputPath.h"
00006 #include "moses/StaticData.h"
00007 #include "moses/TranslationModel/PhraseDictionaryTreeAdaptor.h"
00008
00009 using namespace std;
00010
00011 namespace Moses
00012 {
00013 InputFeature *InputFeature::s_instance = NULL;
00014
00015 InputFeature::InputFeature(const std::string &line)
00016 : StatelessFeatureFunction(line,true)
00017 , m_numRealWordCount(0)
00018 {
00019 m_numInputScores = this->m_numScoreComponents;
00020 ReadParameters();
00021
00022 UTIL_THROW_IF2(s_instance, "Can only have 1 input feature");
00023 s_instance = this;
00024 }
00025
00026 void InputFeature::Load(AllOptions::ptr const& opts)
00027 {
00028 m_options = opts;
00029 const PhraseDictionary *pt = PhraseDictionary::GetColl()[0];
00030 const PhraseDictionaryTreeAdaptor *ptBin = dynamic_cast<const PhraseDictionaryTreeAdaptor*>(pt);
00031
00032 m_legacy = (ptBin != NULL);
00033 }
00034
00035 void InputFeature::SetParameter(const std::string& key, const std::string& value)
00036 {
00037 if (key == "num-input-features") {
00038 m_numInputScores = Scan<size_t>(value);
00039 } else if (key == "real-word-count") {
00040 m_numRealWordCount = Scan<size_t>(value);
00041 } else {
00042 StatelessFeatureFunction::SetParameter(key, value);
00043 }
00044
00045 }
00046
00047 void InputFeature::EvaluateWithSourceContext(const InputType &input
00048 , const InputPath &inputPath
00049 , const TargetPhrase &targetPhrase
00050 , const StackVec *stackVec
00051 , ScoreComponentCollection &scoreBreakdown
00052 , ScoreComponentCollection *estimatedScores) const
00053 {
00054 if (m_legacy) {
00055
00056 return;
00057 } else if (input.GetType() == WordLatticeInput) {
00058 const ScorePair *scores = inputPath.GetInputScore();
00059 if (scores) {
00060 scoreBreakdown.PlusEquals(this, *scores);
00061 }
00062 }
00063 }
00064
00065 }
00066