怎么用nn.lstm和nn.conv2d搭建convlstm

可以使用nn.ConvLSTM2d来搭建ConvLSTM模型，它可以结合nn.LSTM和nn.Conv2d的功能。首先，需要定义ConvLSTM层的输入和输出通道数、卷积核大小、步幅和填充，然后将其传递给nn.ConvLSTM2d函数。在模型的前向传递过程中，可以使用nn.Conv2d和nn.LSTM来处理输入数据和隐藏状态。具体实现可以参考PyTorch官方文档中的例子。

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class TPCNN(nn.Module): def __init__(self, num_class=10, head_payload=False): super(TPCNN, self).__init__() # 上 self.uconv1 = nn.Sequential( # nn.Conv2d(1, 16, kernel_size=3, stride=1, padding=1, dilation=1, bias=True), nn.BatchNorm2d(16, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) self.uconv2 = nn.Sequential( # nn.Conv2d(16, 32, kernel_size=3, stride=2, padding=1, dilation=1, bias=True), nn.BatchNorm2d(32, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) # 中 self.mconv1 = nn.Sequential( # nn.Conv2d(1, 32, kernel_size=3, stride=2, padding=1, dilation=1, bias=True), nn.BatchNorm2d(32, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) # 下 self.dconv1 = nn.Sequential( # nn.Conv2d(1, 32, kernel_size=3, stride=1, padding=1, dilation=1, bias=True), nn.BatchNorm2d(32, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), nn.MaxPool2d(kernel_size=2) ) self.uconv3 = nn.Sequential( # nn.Conv2d(96, 128, kernel_size=3, stride=1, padding=1, dilation=1, bias=True), nn.BatchNorm2d(128, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) self.mconv2 = nn.Sequential( # nn.Conv2d(96, 128, kernel_size=3, stride=2, padding=1, dilation=1, bias=True), nn.BatchNorm2d(128, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) self.dconv2 = nn.Sequential( # nn.Conv2d(96, 128, kernel_size=3, stride=1, padding=1, dilation=1, bias=True), nn.BatchNorm2d(128, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) self.uconv4 = nn.Sequential( # nn.Conv2d(256, 512, kernel_size=3, stride=2, padding=1, dilation=1, bias=True), nn.BatchNorm2d(512, eps=1e-05, momentum=0.9, affine=True), nn.ReLU(), ) self.globalconv1 = nn.Sequential( nn.Conv2d(896, 1024, kernel_size=3, stride=1, padding=1), nn.BatchNorm2d(1024, eps=1e-05, momentum=0.9, affine=True), nn.ReLU() ) self.dmaxpool = nn.MaxPool2d(kernel_size=2,padding=1) # self.lstm1 = nn.LSTM(256,512, 2) # self.lstm2 = nn.LSTM(self.i_size*2,self.i_size*2, 2) self.avpool = nn.AdaptiveAvgPool2d(2) # self.globallstm = nn.LSTM(512, 256, 1) self.fc1 = nn.Linear(1024*2*2, 512) self.fc2 = nn.Linear(512, num_class)

这段代码定义了一个名为TPCNN的类，继承自nn.Module。它具有一个num_class参数，默认值为10，以及一个head_payload参数，其默认值为False。在__init__函数中，它首先调用父类的构造函数，然后定义了该类的其余属性和方法。

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

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。