mosesdecoder/moses/FF/SkeletonChangeInput.cpp

97 lines
2.9 KiB
C++

#include <vector>
#include "SkeletonChangeInput.h"
#include "moses/ScoreComponentCollection.h"
#include "moses/TargetPhrase.h"
#include "moses/Sentence.h"
#include "moses/FactorCollection.h"
#include "util/exception.hh"
using namespace std;
namespace Moses
{
SkeletonChangeInput::SkeletonChangeInput(const std::string &line)
:StatelessFeatureFunction(2, line)
{
ReadParameters();
}
void SkeletonChangeInput::EvaluateInIsolation(const Phrase &source
, const TargetPhrase &targetPhrase
, ScoreComponentCollection &scoreBreakdown
, ScoreComponentCollection &estimatedFutureScore) const
{
// dense scores
vector<float> newScores(m_numScoreComponents);
newScores[0] = 1.5;
newScores[1] = 0.3;
scoreBreakdown.PlusEquals(this, newScores);
// sparse scores
scoreBreakdown.PlusEquals(this, "sparse-name", 2.4);
}
void SkeletonChangeInput::EvaluateWithSourceContext(const InputType &input
, const InputPath &inputPath
, const TargetPhrase &targetPhrase
, const StackVec *stackVec
, ScoreComponentCollection &scoreBreakdown
, ScoreComponentCollection *estimatedFutureScore) const
{
if (targetPhrase.GetNumNonTerminals()) {
vector<float> newScores(m_numScoreComponents);
newScores[0] = - std::numeric_limits<float>::infinity();
scoreBreakdown.PlusEquals(this, newScores);
}
}
void SkeletonChangeInput::EvaluateTranslationOptionListWithSourceContext(const InputType &input
, const TranslationOptionList &translationOptionList) const
{}
void SkeletonChangeInput::EvaluateWhenApplied(const Hypothesis& hypo,
ScoreComponentCollection* accumulator) const
{}
void SkeletonChangeInput::EvaluateWhenApplied(const ChartHypothesis &hypo,
ScoreComponentCollection* accumulator) const
{}
void SkeletonChangeInput::ChangeSource(InputType *&input) const
{
// add factor[1] to each word. Created from first 4 letter of factor[0]
Sentence *sentence = dynamic_cast<Sentence*>(input);
UTIL_THROW_IF2(sentence == NULL, "Not a sentence input");
FactorCollection &fc = FactorCollection::Instance();
size_t size = sentence->GetSize();
for (size_t i = 0; i < size; ++i) {
Word &word = sentence->Phrase::GetWord(i);
const Factor *factor0 = word[0];
std::string str = factor0->GetString().as_string();
if (str.length() > 4) {
str = str.substr(0, 4);
}
const Factor *factor1 = fc.AddFactor(str);
word.SetFactor(1, factor1);
}
}
void SkeletonChangeInput::SetParameter(const std::string& key, const std::string& value)
{
if (key == "arg") {
// set value here
} else {
StatelessFeatureFunction::SetParameter(key, value);
}
}
}