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Try different drop_layer structure in Tok2Vec

This commit is contained in:
Matthew Honnibal 2017-08-12 08:56:57 -05:00
parent cd5ecedf6a
commit 4ab0c8c8e9
1 changed files with 12 additions and 12 deletions
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24
spacy/_ml.py
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@ -210,14 +210,14 @@ class PrecomputableMaxouts(Model):
return Yfp, backward
def drop_layer(layer, factor=1.0):
def drop_layer(layer, factor=2.):
def drop_layer_fwd(X, drop=0.):
drop *= factor
mask = layer.ops.get_dropout_mask((1,), drop)
if mask is not None and mask[0] == 0.:
return X, lambda dX, sgd=None: dX
else:
if mask is None or mask > 0:
return layer.begin_update(X, drop=drop)
else:
return X, lambda dX, sgd=None: dX
return wrap(drop_layer_fwd, layer)
@ -229,17 +229,17 @@ def Tok2Vec(width, embed_size, preprocess=None):
suffix = get_col(cols.index(SUFFIX)) >> HashEmbed(width, embed_size//2, name='embed_suffix')
shape = get_col(cols.index(SHAPE)) >> HashEmbed(width, embed_size//2, name='embed_shape')
embed = (norm | prefix | suffix | shape )
embed = (norm | prefix | suffix | shape ) >> Maxout(width, width*4, pieces=3)
tok2vec = (
with_flatten(
asarray(Model.ops, dtype='uint64')
>> uniqued(embed >> Maxout(width, width*4, pieces=3), column=5)
>> Residual(
(ExtractWindow(nW=1) >> ReLu(width, width*3))
>> (ExtractWindow(nW=1) >> ReLu(width, width*3))
>> (ExtractWindow(nW=1) >> ReLu(width, width*3))
>> (ExtractWindow(nW=1) >> ReLu(width, width*3))
), pad=4)
>> uniqued(embed, column=5)
>> drop_layer(
Residual(
(ExtractWindow(nW=1) >> ReLu(width, width*3))
)
) ** 4, pad=4
)
)
if preprocess not in (False, None):
tok2vec = preprocess >> tok2vec