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Added implicit add-1 smoothing.

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Ulrich Germann 2014-02-08 18:03:18 +00:00
parent 40fbe226e4
commit 9899364c46
1 changed files with 4 additions and 4 deletions
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8
moses/TranslationModel/UG/mm/ug_lexical_phrase_scorer2.h
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@ -96,8 +96,8 @@ namespace ugdiss
{ {
if (COOC.m1(s) == 0 || COOC.m2(t) == 0) return 1.0; if (COOC.m1(s) == 0 || COOC.m2(t) == 0) return 1.0;
// if (!COOC[s][t]) cout << s << " " << t << endl; // if (!COOC[s][t]) cout << s << " " << t << endl;
assert(COOC[s][t]); // assert(COOC[s][t]);
return float(COOC[s][t])/COOC.m1(s); return float(COOC[s][t]+1)/(COOC.m1(s)+1);
} }
template<typename TKN> template<typename TKN>
@ -106,8 +106,8 @@ namespace ugdiss
plup_bwd(id_type const s, id_type const t) const plup_bwd(id_type const s, id_type const t) const
{ {
if (COOC.m1(s) == 0 || COOC.m2(t) == 0) return 1.0; if (COOC.m1(s) == 0 || COOC.m2(t) == 0) return 1.0;
assert(COOC[s][t]); // assert(COOC[s][t]);
return float(COOC[s][t])/COOC.m2(t); return float(COOC[s][t]+1)/(COOC.m2(t)+1);
} }
template<typename TKN> template<typename TKN>