Source code for espnet2.asr.preencoder.linear

#!/usr/bin/env python3
#  2021, Carnegie Mellon University;  Xuankai Chang
#  Apache 2.0  (http://www.apache.org/licenses/LICENSE-2.0)

"""Linear Projection."""

from typing import Tuple

import torch
from typeguard import typechecked

from espnet2.asr.preencoder.abs_preencoder import AbsPreEncoder


[docs]class LinearProjection(AbsPreEncoder): """Linear Projection Preencoder.""" @typechecked def __init__(self, input_size: int, output_size: int, dropout: float = 0.0): """Initialize the module.""" super().__init__() self.output_dim = output_size self.linear_out = torch.nn.Linear(input_size, output_size) self.dropout = torch.nn.Dropout(dropout)
[docs] def forward( self, input: torch.Tensor, input_lengths: torch.Tensor ) -> Tuple[torch.Tensor, torch.Tensor]: """Forward.""" output = self.linear_out(self.dropout(input)) return output, input_lengths # no state in this layer
[docs] def output_size(self) -> int: """Get the output size.""" return self.output_dim