void
LexicalReordering::
SetCache(TranslationOption& to) const
{
if (to.GetLexReorderingScores(this)) return;
// Scores were were set already (e.g., by sampling phrase table)
if (m_table) {
Phrase const& sphrase = to.GetInputPath().GetPhrase();
Phrase const& tphrase = to.GetTargetPhrase();
to.CacheLexReorderingScores(*this, this->GetProb(sphrase,tphrase));
} else { // e.g. OOV with Mmsapt
// Scores vals(GetNumScoreComponents(), 0);
// to.CacheLexReorderingScores(*this, vals);
}
}
void LexicalReorderingState::CopyScores(Scores& scores, const TranslationOption &topt, ReorderingType reoType) const
{
// don't call this on a bidirectional object
CHECK(m_direction == LexicalReorderingConfiguration::Backward || m_direction == LexicalReorderingConfiguration::Forward);
const Scores *cachedScores = (m_direction == LexicalReorderingConfiguration::Backward) ?
topt.GetLexReorderingScores(m_configuration.GetScoreProducer()) : m_prevScore;
// No scores available. TODO: Using a good prior distribution would be nicer.
if(cachedScores == NULL)
return;
const Scores &scoreSet = *cachedScores;
if(m_configuration.CollapseScores())
scores[m_offset] = scoreSet[m_offset + reoType];
else {
std::fill(scores.begin() + m_offset, scores.begin() + m_offset + m_configuration.GetNumberOfTypes(), 0);
scores[m_offset + reoType] = scoreSet[m_offset + reoType];
}
}
