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42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from abc import ABC
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from typing import Dict, Optional
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from nemo.core.classes import NeuralModule
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from nemo.core.neural_types import ChannelType, MaskType, NeuralType
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from nemo.utils import logging
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__all__ = ['EncoderModule']
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class EncoderModule(NeuralModule, ABC):
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""" Base class for encoder neural module to be used in NLP models. """
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@property
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def input_types(self) -> Optional[Dict[str, NeuralType]]:
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return {
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"input_ids": NeuralType(('B', 'T'), ChannelType()),
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"encoder_mask": NeuralType(('B', 'T'), MaskType()),
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}
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@property
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def output_types(self) -> Optional[Dict[str, NeuralType]]:
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return {"last_hidden_states": NeuralType(('B', 'T', 'D'), ChannelType())}
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@property
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def hidden_size(self) -> Optional[int]:
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raise NotImplementedError
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