lstm的pytorch代码
时间: 2023-10-28 10:07:00 浏览: 83
基于Pytorch实现LSTM
下面是一个简单的LSTM模型的PyTorch代码示例:
```python
import torch
import torch.nn as nn
class LSTMModel(nn.Module):
def __init__(self, input_dim, hidden_dim, num_layers, output_dim):
super(LSTMModel, self).__init__()
self.hidden_dim = hidden_dim
self.num_layers = num_layers
self.lstm = nn.LSTM(input_dim, hidden_dim, num_layers, batch_first=True)
self.fc = nn.Linear(hidden_dim, output_dim)
def forward(self, x):
h0 = torch.zeros(self.num_layers, x.size(0), self.hidden_dim).to(device)
c0 = torch.zeros(self.num_layers, x.size(0), self.hidden_dim).to(device)
out, _ = self.lstm(x, (h0, c0))
out = self.fc(out[:, -1, :])
return out
```
在这个模型中,我们使用了一个单层的LSTM,输入维度为input_dim,输出维度为output_dim。我们还添加了一个全连接层fc用于输出。在forward函数中,我们首先使用h0和c0初始化了LSTM的隐藏状态和记忆状态,然后将输入x传入LSTM,最后使用全连接层fc将LSTM的输出转换为我们所需要的输出。
阅读全文