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- # Copyright 2020-2021 Huawei Technologies Co., Ltd
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- # ===========================================================================
- """generate json desc for softmax"""
- from mindspore._extends.graph_kernel.model.model import DataFormat as DF
- from ._utils import Expander, ExpanderInfoValidator as VLD
-
-
- @VLD.add_format(DF.DEFAULT)
- @VLD.check_attrs('axis')
- class Softmax(Expander):
- """Softmax expander"""
-
- def _expand(self, graph_builder):
- input_x = self.inputs[0]
- axis = self.attrs['axis']
-
- max_x = graph_builder.emit('ReduceMax', [input_x], attrs={'reduce_axis': axis, 'keep_dims': True})
- data_sub = graph_builder.emit('Sub', [input_x, max_x])
- data_exp = graph_builder.emit('Exp', [data_sub])
- data_expsum = graph_builder.emit('ReduceSum', [data_exp], attrs={'reduce_axis': axis, 'keep_dims': True})
- result = graph_builder.emit('RealDiv', [data_exp, data_expsum])
-
- return result
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