diff options
Diffstat (limited to 'python/cdec')
| -rw-r--r-- | python/cdec/sa/online.py | 58 |
1 files changed, 32 insertions, 26 deletions
diff --git a/python/cdec/sa/online.py b/python/cdec/sa/online.py index 0783e727..f3054212 100644 --- a/python/cdec/sa/online.py +++ b/python/cdec/sa/online.py @@ -44,40 +44,46 @@ class Bilex: def p_fe(self, f, e): d = self.fe.get(f, None) if not d: - return 0 - return d.get(e, 0) / self.f.get(f) + return None + val = d.get(e, None) + if not val: + return None + return val / self.f.get(f) def p_ef(self, e, f): d = self.ef.get(e, None) if not d: - return 0 - return d.get(f, 0) / self.e.get(e) + return None + val = d.get(f, None) + if not val: + return None + return val / self.e.get(e) # Update counts from aligned sentence def update(self, f_words, e_words, links): - aligned_fe = [list() for _ in range(len(f_words))] - aligned_ef = [list() for _ in range(len(e_words))] + covered_f = set() + covered_e = set() for (i, j) in links: - aligned_fe[i].append(j) - aligned_ef[j].append(i) - for f_i in range(len(f_words)): - e_i_aligned = aligned_fe[f_i] - if len(e_i_aligned) > 0: - for e_i in e_i_aligned: - self.f[f_words[f_i]] += 1 - self.fe[f_words[f_i]][e_words[e_i]] += 1 - else: - self.f[f_words[f_i]] += 1 - self.fe[f_words[f_i]][NULL_WORD] += 1 - for e_i in range(len(e_words)): - f_i_aligned = aligned_ef[e_i] - if len(f_i_aligned) > 0: - for f_i in f_i_aligned: - self.e[e_words[e_i]] += 1 - self.ef[e_words[e_i]][f_words[f_i]] += 1 - else: - self.e[e_words[e_i]] += 1 - self.ef[e_words[e_i]][NULL_WORD] += 1 + covered_f.add(i) + covered_e.add(j) + self.f[f_words[i]] += 1 + self.e[e_words[j]] += 1 + self.fe[f_words[i]][e_words[j]] += 1 + self.ef[e_words[j]][f_words[i]] += 1 + # e being covered corresponds to f->e + for j in range(len(e_words)): + if j not in covered_e: + self.f[NULL_WORD] += 1 + self.e[e_words[j]] += 1 + self.fe[NULL_WORD][e_words[j]] += 1 + self.ef[e_words[j]][NULL_WORD] += 1 + # e->f + for i in range(len(f_words)): + if i not in covered_f: + self.f[f_words[i]] += 1 + self.e[NULL_WORD] += 1 + self.ef[NULL_WORD][f_words[i]] += 1 + self.fe[f_words[i]][NULL_WORD] += 1 # Update counts from alignd bitext def add_bitext(self, alignment_f, text_f, target_text_f=None): |