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- # Copyright 2020 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.
- # ============================================================================
- """
- linear warm up learning rate.
- """
-
-
- def linear_warmup_lr(current_step, warmup_steps, base_lr, init_lr):
- lr_inc = (float(base_lr) - float(init_lr)) / float(warmup_steps)
- lr = float(init_lr) + lr_inc*current_step
- return lr
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