Encoder_Decoder.py

#!/usr/bin/env python
# -*- coding: UTF-8 -*-
'''
@Project :Awesome-DL-Models 
@File    :Encoder_Decoder.py
@Author  :JackHCC
@Date    :2022/3/14 19:35 
@Desc    :

'''
from torch import nn


class Encoder(nn.Module):
    """编码器-解码器架构的基本编码器接口"""

    def __init__(self, **kwargs):
        super(Encoder, self).__init__(**kwargs)

    def forward(self, X, *args):
        raise NotImplementedError


class Decoder(nn.Module):
    """编码器-解码器架构的基本解码器接口"""

    def __init__(self, **kwargs):
        super(Decoder, self).__init__(**kwargs)

    def init_state(self, enc_outputs, *args):
        raise NotImplementedError

    def forward(self, X, state):
        raise NotImplementedError


class EncoderDecoder(nn.Module):
    """编码器-解码器架构的基类"""

    def __init__(self, encoder, decoder, **kwargs):
        super(EncoderDecoder, self).__init__(**kwargs)
        self.encoder = encoder
        self.decoder = decoder

    def forward(self, enc_X, dec_X, *args):
        enc_outputs = self.encoder(enc_X, *args)
        dec_state = self.decoder.init_state(enc_outputs, *args)
        return self.decoder(dec_X, dec_state)