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#ifndef PYP_LEX_TRANS
#define PYP_LEX_TRANS
#include <vector>
#include "wordid.h"
#include "prob.h"
#include "sampler.h"
struct TRule;
struct PYPWordModel;
template <typename T> struct ConditionalPYPWordModel;
struct PYPLexicalTranslation {
explicit PYPLexicalTranslation(const std::vector<std::vector<WordID> >& lets,
const unsigned num_letters);
prob_t Likelihood() const;
void ResampleHyperparameters(MT19937* rng);
prob_t Prob(WordID src, WordID trg) const; // return p(trg | src)
void Summary() const;
void Increment(WordID src, WordID trg, MT19937* rng);
void Decrement(WordID src, WordID trg, MT19937* rng);
unsigned UniqueConditioningContexts() const;
private:
const std::vector<std::vector<WordID> >& letters; // spelling dictionary
PYPWordModel* up0; // base distribuction (model English word)
ConditionalPYPWordModel<PYPWordModel>* tmodel; // translation distributions
// (model English word | French word)
const WordID kX;
};
#endif
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