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Randomize the rebatch size in parser

This commit is contained in:
Matthew Honnibal 2018-02-21 21:02:07 +01:00
parent 0872cf611d
commit 661873ee4c
1 changed files with 5 additions and 2 deletions
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7
spacy/syntax/nn_parser.pyx
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@ -555,7 +555,10 @@ cdef class Parser:
for multitask in self._multitasks:
multitask.update(docs, golds, drop=drop, sgd=sgd)
cuda_stream = util.get_cuda_stream()
states, golds, max_steps = self._init_gold_batch(docs, golds)
# Chop sequences into lengths of this many transitions, to make the
# batch uniform length.
cut_gold = numpy.random.choice(range(20, 100))
states, golds, max_steps = self._init_gold_batch(docs, golds, max_length=cut_gold)
(tokvecs, bp_tokvecs), state2vec, vec2scores = self.get_batch_model(docs, cuda_stream,
drop)
todo = [(s, g) for (s, g) in zip(states, golds)
@ -659,7 +662,7 @@ cdef class Parser:
_cleanup(beam)
def _init_gold_batch(self, whole_docs, whole_golds, min_length=5, max_length=2000):
def _init_gold_batch(self, whole_docs, whole_golds, min_length=5, max_length=500):
"""Make a square batch, of length equal to the shortest doc. A long
doc will get multiple states. Let's say we have a doc of length 2*N,
where N is the shortest doc. We'll make two states, one representing