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Add config for beam density

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This commit is contained in:
Matthew Honnibal 2016-08-05 18:24:54 +02:00
parent 532fa36c13
commit de82552a13
1 changed files with 7 additions and 4 deletions
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11
spacy/syntax/beam_parser.pyx
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@ -70,20 +70,23 @@ def get_templates(name):
pf.tree_shape + pf.trigrams)
cdef int BEAM_WIDTH = 8
cdef int BEAM_WIDTH = 16
cdef weight_t BEAM_DENSITY = 0.01
cdef class BeamParser(Parser):
cdef public int beam_width
cdef public weight_t beam_density
def __init__(self, *args, **kwargs):
self.beam_width = kwargs.get('beam_width', BEAM_WIDTH)
self.beam_density = kwargs.get('beam_density', BEAM_DENSITY)
Parser.__init__(self, *args, **kwargs)
cdef int parseC(self, TokenC* tokens, int length, int nr_feat, int nr_class) with gil:
self._parseC(tokens, length, nr_feat, nr_class)
cdef int _parseC(self, TokenC* tokens, int length, int nr_feat, int nr_class) except -1:
cdef Beam beam = Beam(self.moves.n_moves, self.beam_width)
cdef Beam beam = Beam(self.moves.n_moves, self.beam_width, min_density=self.beam_density)
beam.initialize(_init_state, length, tokens)
beam.check_done(_check_final_state, NULL)
while not beam.is_done:
@ -96,11 +99,11 @@ cdef class BeamParser(Parser):
def train(self, Doc tokens, GoldParse gold_parse, itn=0):
self.moves.preprocess_gold(gold_parse)
cdef Beam pred = Beam(self.moves.n_moves, self.beam_width)
cdef Beam pred = Beam(self.moves.n_moves, self.beam_width, min_density=self.beam_density)
pred.initialize(_init_state, tokens.length, tokens.c)
pred.check_done(_check_final_state, NULL)
cdef Beam gold = Beam(self.moves.n_moves, self.beam_width)
cdef Beam gold = Beam(self.moves.n_moves, self.beam_width, min_density=self.beam_density)
gold.initialize(_init_state, tokens.length, tokens.c)
gold.check_done(_check_final_state, NULL)
violn = MaxViolation()