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| from abc import ABC
| from abc import abstractmethod
| from typing import Tuple
|
| import torch
|
|
| class AbsFrontend(torch.nn.Module, ABC):
| @abstractmethod
| def output_size(self) -> int:
| raise NotImplementedError
|
| @abstractmethod
| def forward(
| self, input: torch.Tensor, input_lengths: torch.Tensor
| ) -> Tuple[torch.Tensor, torch.Tensor]:
| raise NotImplementedError
|
|
