69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
"""
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Copyright (c) 2019 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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import numpy as np
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from extensions.back.ReshapeMutation import ReshapeMutation
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from mo.back.replacement import BackReplacementPattern
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from mo.graph.graph import Graph
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from mo.ops.const import Const
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from mo.ops.reshape import Reshape
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from mo.ops.unsqueeze import Unsqueeze
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class SelectBroadcast(BackReplacementPattern):
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"""
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Select broadcasting semantics in TF isn't numpy-like
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broadcasting rules, manual reshape is needed.
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For example:
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condition: [1]
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input_1: [1, 8]
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input_2: [1, 8]
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Condition should be aligned with first dimensions of inputs.
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"""
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enabled = True
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def run_before(self):
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return [ReshapeMutation]
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@staticmethod
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def pattern():
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return dict(
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nodes=[
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('op', dict(kind='op', op='Select'))],
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edges=[]
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)
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@staticmethod
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def replace_pattern(graph: Graph, match: dict):
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select = match['op']
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if select.has_valid('format') and select['format'] == 'tf':
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condition = select.in_node(0)
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input_1 = select.in_node(1)
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input_2 = select.in_node(2)
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assert np.array_equal(input_1.shape, input_2.shape)
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if len(condition.shape) == 1 and len(input_1.shape) > 1:
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new_shape = np.array([0] + [1] * (len(input_1.shape) - 1), dtype=np.int64)
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reshape_shape_const = Const(graph, {'name': select.name + '/Reshape/Dim/', 'value': new_shape}).create_node()
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unsqueeze_op = Reshape(graph, dict(name=select.name+'/Broadcast/')).create_node(inputs=[condition])
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reshape_shape_const.out_port(0).get_connection().set_destination(unsqueeze_op.in_port(1))
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select.in_port(0).disconnect()
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select.in_port(0).get_connection().set_source(unsqueeze_op.out_port(0)) |