29 lines
782 B
Python
29 lines
782 B
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the license found in the
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# LICENSE file in the root directory of this source tree.
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"""LSTM layers module."""
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from torch import nn
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class SLSTM(nn.Module):
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"""
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LSTM without worrying about the hidden state, nor the layout of the data.
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Expects input as convolutional layout.
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"""
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def __init__(self, dimension: int, num_layers: int = 2, skip: bool = True):
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super().__init__()
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self.skip = skip
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self.lstm = nn.LSTM(dimension, dimension, num_layers)
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def forward(self, x):
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x = x.permute(2, 0, 1)
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y, _ = self.lstm(x)
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if self.skip:
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y = y + x
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y = y.permute(1, 2, 0)
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return y
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