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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 GkDropout"""
- from ._utils import Expander, ExpanderInfoValidator as VLD
-
-
- @VLD.check_all_formats_same
- @VLD.check_attrs('keep_prob')
- class GkDropout(Expander):
- """GkDropout expander"""
-
- def _expand(self, graph_builder):
- input_x, input_mask = self.inputs
- keep_prob = self.attrs['keep_prob']
-
- r_keep_prob = graph_builder.value(input_x.dtype, 1.0 / keep_prob)
- keep_prob = graph_builder.value(input_x.dtype, keep_prob)
-
- if input_mask.dtype != input_x.dtype:
- input_mask = graph_builder.emit('Cast', [input_mask], attrs={'dst_type': input_x.dtype})
- mask = graph_builder.emit('LessEqual', [input_mask, keep_prob]) # output is bool type
- mask = graph_builder.emit('Cast', [mask], attrs={'dst_type': input_x.dtype})
-
- # compute result
- result = graph_builder.emit('Mul', [r_keep_prob, input_x])
- result = graph_builder.emit('Mul', [result, mask])
-
- return result, mask
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