58 lines
2.3 KiB
Python
58 lines
2.3 KiB
Python
"""
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Copyright (C) 2017-2020 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.ops.elementwise import Add, Pow, Mul
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from mo.front.common.replacement import FrontReplacementOp
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from mo.graph.graph import Node, Graph
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from mo.ops.const import Const
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class SquaredDifference(FrontReplacementOp):
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"""
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Example class illustrating how to implement replacement of a single op in the front-end of the MO pipeline.
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This class replaces a single op "SquaredDifference" by a sub-graph consisting of 3 lower-level ops.
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"""
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op = "SquaredDifference"
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enabled = True
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graph_condition = [lambda graph: not graph.graph['cmd_params'].generate_experimental_IR_V10]
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def replace_op(self, graph: Graph, node: Node):
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# Create nodes
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const_neg = Const(graph, dict(value=np.array(-1), name=node.name + '/negate_const_')).create_node()
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negate = Mul(graph, {'name': node.name + '/negate_'}).create_node()
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add = Add(graph, {'name': node.name + '/add_'}).create_node()
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# convert the power value to an appropriate data type
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power_value = np.array(2)
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if node.has_valid('data_type'):
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power_value = power_value.astype(node.data_type)
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const = Const(graph, {'value': power_value}).create_node()
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squared = Pow(graph, {'name': node.name + '/squared_'}).create_node()
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# Connect nodes
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node.in_port(0).get_connection().set_destination(add.in_port(0))
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node.in_port(1).get_connection().set_destination(negate.in_port(0))
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const_neg.out_port(0).connect(negate.in_port(1))
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negate.out_port(0).connect(add.in_port(1))
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add.out_port(0).connect(squared.in_port(0))
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const.out_port(0).connect(squared.in_port(1))
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# The "explicit" version of the return value is: [(out_node.id, 0)])
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return [squared.id]
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