| # Copyright 2024 MIT Han Lab | |
| # | |
| # 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. | |
| # | |
| # SPDX-License-Identifier: Apache-2.0 | |
| from functools import partial | |
| from typing import Optional | |
| import torch.nn as nn | |
| from ...models.utils import build_kwargs_from_config | |
| __all__ = ["build_act"] | |
| # register activation function here | |
| REGISTERED_ACT_DICT: dict[str, type] = { | |
| "relu": nn.ReLU, | |
| "relu6": nn.ReLU6, | |
| "hswish": nn.Hardswish, | |
| "silu": nn.SiLU, | |
| "gelu": partial(nn.GELU, approximate="tanh"), | |
| } | |
| def build_act(name: str, **kwargs) -> Optional[nn.Module]: | |
| if name in REGISTERED_ACT_DICT: | |
| act_cls = REGISTERED_ACT_DICT[name] | |
| args = build_kwargs_from_config(kwargs, act_cls) | |
| return act_cls(**args) | |
| else: | |
| return None | |