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* Fix beam search with new StateClass

This commit is contained in:
Matthew Honnibal 2015-06-10 06:33:39 +02:00
parent d70304b7dd
commit 4575e7a60f
1 changed files with 12 additions and 11 deletions
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23
spacy/syntax/parser.pyx
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@ -107,8 +107,9 @@ cdef class Parser:
cdef Beam beam = Beam(self.moves.n_moves, self.cfg.beam_width)
beam.initialize(_init_state, tokens.length, tokens.data)
beam.check_done(_check_final_state, NULL)
words = [w.orth_ for w in tokens]
while not beam.is_done:
self._advance_beam(beam, None, False)
self._advance_beam(beam, None, False, words)
state = <StateClass>beam.at(0)
self.moves.finalize_state(state)
tokens.set_parse(state._sent)
@ -147,9 +148,10 @@ cdef class Parser:
gold.check_done(_check_final_state, NULL)
violn = MaxViolation()
words = [w.orth_ for w in tokens]
while not pred.is_done and not gold.is_done:
self._advance_beam(pred, gold_parse, False)
self._advance_beam(gold, gold_parse, True)
self._advance_beam(pred, gold_parse, False, words)
self._advance_beam(gold, gold_parse, True, words)
violn.check(pred, gold)
if pred.loss >= 1:
counts = {clas: {} for clas in range(self.model.n_classes)}
@ -162,7 +164,7 @@ cdef class Parser:
_cleanup(gold)
return pred.loss
def _advance_beam(self, Beam beam, GoldParse gold, bint follow_gold):
def _advance_beam(self, Beam beam, GoldParse gold, bint follow_gold, words):
cdef atom_t[CONTEXT_SIZE] context
cdef int i, j, cost
cdef bint is_valid
@ -176,13 +178,11 @@ cdef class Parser:
if gold is not None:
for i in range(beam.size):
stcls = <StateClass>beam.at(i)
self.moves.set_costs(beam.costs[i], stcls, gold)
if follow_gold:
n_true = 0
for j in range(self.moves.n_moves):
beam.is_valid[i][j] *= beam.costs[i][j] == 0
n_true += beam.is_valid[i][j]
assert n_true >= 1
if not stcls.is_final():
self.moves.set_costs(beam.costs[i], stcls, gold)
if follow_gold:
for j in range(self.moves.n_moves):
beam.is_valid[i][j] *= beam.costs[i][j] == 0
beam.advance(_transition_state, _hash_state, <void*>self.moves.c)
beam.check_done(_check_final_state, NULL)
@ -213,6 +213,7 @@ cdef int _transition_state(void* _dest, void* _src, class_t clas, void* _moves)
cdef void* _init_state(Pool mem, int length, void* tokens) except NULL:
cdef StateClass st = StateClass.init(<const TokenC*>tokens, length)
st.push()
Py_INCREF(st)
return <void*>st