GitHub/gf-core
1
0
Fork 1
mirror of https://github.com/GrammaticalFramework/gf-core.git synced 2026-04-09 04:59:31 -06:00
Code Issues Packages Projects Releases Wiki Activity

revised heuristic in the statistical parser

Browse Source
This commit is contained in:
kr.angelov
2012-11-14 12:34:22 +00:00
parent 7a69d9d5e5
commit a3ba1991f4
1 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/runtime/c/pgf/parser.c
View File

@@ -90,7 +90,7 @@ struct PgfParseState {
unsigned short offset;
#endif
prob_t delta_prob;
prob_t viterbi_prob;
PgfParsing* ps;
PgfTokenState* ts;
@@ -743,9 +743,8 @@ pgf_parsing_add_transition(PgfParseState* before, PgfParseState* after,
if (gu_string_eq(tok, after->ts->tok)) {
if (after->next == NULL) {
after->ps->target = item;
after->delta_prob =
item->inside_prob+item->conts->outside_prob -
before->delta_prob;
after->viterbi_prob =
item->inside_prob+item->conts->outside_prob;
}
gu_buf_heap_push(after->agenda, &pgf_item_prob_order, &item);
@@ -1552,7 +1551,8 @@ pgf_parsing_proceed(PgfParseState* state) {
}
}
delta_prob += st->delta_prob*0.8;
delta_prob +=
(st->viterbi_prob-(st->next ? st->next->viterbi_prob : 0))*0.95;
st = st->next;
}
@@ -1634,7 +1634,7 @@ pgf_new_parse_state(PgfParsing* ps,
#ifdef PGF_PARSER_DEBUG
state->offset = next ? next->offset+1 : 0;
#endif
state->delta_prob = 0;
state->viterbi_prob = 0;
state->ps = ps;
state->ts = ts;
return state;