54 lines
2.6 KiB
Python
54 lines
2.6 KiB
Python
# Copyright (C) 2018-2021 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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from extensions.ops.ReduceOps import reduce_map
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from extensions.ops.range import Range
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from extensions.ops.rank import Rank
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from mo.front.common.partial_infer.utils import int64_array
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from mo.front.common.replacement import FrontReplacementSubgraph
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from mo.front.subgraph_matcher import SubgraphMatch
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from mo.front.tf.graph_utils import create_op_with_const_inputs
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from mo.graph.graph import Graph
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from mo.ops.const import Const
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class ReduceAxisNormalizer(FrontReplacementSubgraph):
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"""
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Reduce operation requires information about axis, that is represented in original frameworks differently: as an
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operation attribute or as a 1-st input port value. ReduceAxisNormalizer adds second input to Reduce operations with
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axes to normalize if axes are specified as an attribute.
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"""
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enabled = True
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def pattern(self):
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return dict(
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nodes=[
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('reduce', dict(kind='op', op=lambda op: op in reduce_map))
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],
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edges=[]
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)
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def replace_sub_graph(self, graph: Graph, match: [dict, SubgraphMatch]):
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node = match['reduce']
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connected_in_ports = [port for port in node.in_ports().values() if not port.disconnected()]
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if len(connected_in_ports) == 1:
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node_name = node.soft_get('name', node.id)
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# if the 'axis' is None then we still add a second input to the layer with a 1D array with 1 element equal
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# to None. The infer function handles this case because the input shape is known at this stage only
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if node.has_valid('axis'):
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const = Const(graph, {'name': node_name + '/axis', 'value': node.axis}).create_node()
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node.add_input_port(1, skip_if_exist=True)
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const.out_port(0).connect(node.in_port(1))
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del graph.node[node.id]['axis']
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else:
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# The default (if there is no 'axis') is to reduce over all the dimensions of the input tensor.
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axes = create_op_with_const_inputs(graph, Range, {0: int64_array(0), 2: int64_array(1)},
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dict(name=node_name + '/axes'))
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end_of_range = Rank(graph, dict(name=node_name + '/range_end')).create_node()
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node.in_port(0).get_connection().get_source().connect(end_of_range.in_port(0))
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end_of_range.out_port(0).connect(axes.in_port(1))
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node.add_input_port(1, skip_if_exist=True)
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axes.out_port(0).connect(node.in_port(1))
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