| # Copyright 2019 DeepMind Technologies Limited. All Rights Reserved. | |
| # | |
| # 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. | |
| # ============================================================================== | |
| """Gradient transformations used to enforce specific constraints.""" | |
| from optax.transforms import _constraining | |
| keep_params_nonnegative = _constraining.keep_params_nonnegative | |
| NonNegativeParamsState = _constraining.NonNegativeParamsState | |
| zero_nans = _constraining.zero_nans | |
| ZeroNansState = _constraining.ZeroNansState | |