import torch import torch.nn as nn class LeNetConvLSTM(nn.Module): def __init__(self, input_size, hidden_size, kernel_size): super(LeNetConvLSTM, self).__init__() # LeNet网络部分 self.conv1 = nn.Conv2d(in_channels=1, out_channels=6, kernel_size=5) self.pool1 = nn.MaxPool2d(kernel_size=2) self.conv2 = nn.Conv2d(in_channels=6, out_channels=16, kernel_size=5) self.pool2 = nn.MaxPool2d(kernel_size=2) self.fc1 = nn.Linear(in_features=16*5*5, out_features=120) self.fc2 = nn.Linear(in_features=120, out_features=84) # ConvLSTM部分 self.lstm = nn.LSTMCell(input_size, hidden_size) self.hidden_size = hidden_size self.kernel_size = kernel_size self.padding = kernel_size // 2 def forward(self, x): # LeNet网络部分 x = self.pool1(torch.relu(self.conv1(x))) x = self.pool2(torch.relu(self.conv2(x))) x = x.view(-1, 16*5*5) x = torch.relu(self.fc1(x)) x = torch.relu(self.fc2(x)) # 将输出转换为ConvLSTM所需的格式 batch_size, channels, height, width = x.shape x = x.view(batch_size, channels, height*width) x = x.permute(0, 2, 1) # ConvLSTM部分 hx = torch.zeros(batch_size, self.hidden_size).to(x.device) cx = torch.zeros(batch_size, self.hidden_size).to(x.device) for i in range(height*width): hx, cx = self.lstm(x[:, i, :], (hx, cx)) hx = hx.view(batch_size, self.hidden_size, 1, 1) cx = cx.view(batch_size, self.hidden_size, 1, 1) if i == 0: output = hx else: output = torch.cat((output, hx), dim=1) # 将输出转换为正常的格式 output = output.permute(0, 2, 3, 1) output = output.view(batch_size, height, width, self.hidden_size) return output
时间: 2023-11-18 11:05:21 浏览: 97
RNN.zip_RNN_python_深度学习
这段代码定义了一个名为 LeNetConvLSTM 的 PyTorch 模型,它实现了一个结合了 LeNet 网络和 ConvLSTM 的神经网络。LeNet 网络用于提取输入数据的特征,ConvLSTM 用于处理时间序列数据。在 forward 方法中,该模型首先通过 LeNet 网络处理输入数据,然后将输出转换为 ConvLSTM 所需的格式,并对每个时间步运行一个 LSTM 单元,最后将 LSTM 单元的输出转换为正常的格式。
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