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27c7158166
Summary: There is a module called `2to3` which you can target for future specifically to remove these, the directory of `caffe2` has the most redundant imports: ```2to3 -f future -w caffe2``` Pull Request resolved: https://github.com/pytorch/pytorch/pull/45033 Reviewed By: seemethere Differential Revision: D23808648 Pulled By: bugra fbshipit-source-id: 38971900f0fe43ab44a9168e57f2307580d36a38
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
## @package position_weighted
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# Module caffe2.python.layers.position_weighted
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import logging
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import numpy as np
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from caffe2.python import schema
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from caffe2.python.layers.layers import (
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get_categorical_limit,
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ModelLayer,
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)
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from caffe2.python.layers.tags import Tags
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logger = logging.getLogger(__name__)
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class PositionWeighted(ModelLayer):
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def __init__(self, model, input_record, weight_optim=None,
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name="position_weights"):
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super(PositionWeighted, self).__init__(model, name, input_record)
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assert isinstance(input_record, schema.List), "Incorrect input type"
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length_metadata = input_record.lengths.metadata
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max_length = (length_metadata.categorical_limit if length_metadata is
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not None else None)
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if max_length is not None:
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self.shape = max_length
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else:
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self.shape = get_categorical_limit(input_record)
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logger.warning(
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'{}: categorical_limit of lengths is not available, using '
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'categorical_limit of the keys: {}'.format(
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str(input_record.lengths()), self.shape))
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self.pos_w = self.create_param(param_name='pos_w',
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shape=[self.shape, ],
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initializer=('ConstantFill', {'value': 1.0}),
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optimizer=weight_optim)
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self.output_schema = schema.Struct(
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('position_weights',
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schema.Scalar((np.float32, self.shape),
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self.get_next_blob_reference("pos_w_gather")))
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)
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self.tags.update({Tags.HANDLE_AS_SPARSE_LAYER})
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def get_memory_usage(self):
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return self.shape
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def add_ops(self, net):
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inc_seq = net.LengthsRangeFill(
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[self.input_record.lengths()],
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self.input_record.lengths() + '_pos_w_seq'
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)
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net.Gather(
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[self.pos_w, inc_seq],
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self.output_schema.position_weights.field_blobs())
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