diff options
Diffstat (limited to 'gi/pf/base_measures.cc')
| -rw-r--r-- | gi/pf/base_measures.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gi/pf/base_measures.cc b/gi/pf/base_measures.cc index 8adb37d7..97b4e698 100644 --- a/gi/pf/base_measures.cc +++ b/gi/pf/base_measures.cc @@ -6,6 +6,32 @@ using namespace std; +prob_t PhraseConditionalUninformativeUnigramBase::p0(const vector<WordID>& vsrc, + const vector<WordID>& vtrg, + int start_src, int start_trg) const { + const int flen = vsrc.size() - start_src; + const int elen = vtrg.size() - start_trg; + prob_t p; + p.logeq(log_poisson(elen, flen + 0.01)); // elen | flen ~Pois(flen + 0.01) + //p.logeq(log_poisson(elen, 1)); // elen | flen ~Pois(flen + 0.01) + for (int i = 0; i < elen; ++i) + p *= u(vtrg[i + start_trg]); // draw e_i ~Uniform + return p; +} + +prob_t PhraseConditionalUninformativeBase::p0(const vector<WordID>& vsrc, + const vector<WordID>& vtrg, + int start_src, int start_trg) const { + const int flen = vsrc.size() - start_src; + const int elen = vtrg.size() - start_trg; + prob_t p; + //p.logeq(log_poisson(elen, flen + 0.01)); // elen | flen ~Pois(flen + 0.01) + p.logeq(log_poisson(elen, 1)); // elen | flen ~Pois(flen + 0.01) + for (int i = 0; i < elen; ++i) + p *= kUNIFORM_TARGET; // draw e_i ~Uniform + return p; +} + void Model1::LoadModel1(const string& fname) { cerr << "Loading Model 1 parameters from " << fname << " ..." << endl; ReadFile rf(fname); |