pytorch中,使用model.dropout.p = 0.0关闭dropout后,再训练是否需要手动打开dropout?如何打开?
时间: 2023-09-16 17:16:22 浏览: 85
用pytorch写的model.py
在使用 `model.dropout.p = 0.0` 关闭 dropout 后,如果需要再次使用 dropout 进行训练,需要手动将 `model.dropout.p` 设置为非零值。例如,将 `model.dropout.p` 设置为 0.5,表示在训练过程中使用 dropout 概率为 0.5。代码示例如下:
```python
import torch.nn as nn
# 定义模型
class Net(nn.Module):
def __init__(self):
super(Net, self).__init__()
self.fc1 = nn.Linear(10, 5)
self.dropout = nn.Dropout(p=0.2)
self.fc2 = nn.Linear(5, 2)
def forward(self, x):
x = self.fc1(x)
x = nn.functional.relu(x)
x = self.dropout(x)
x = self.fc2(x)
return x
# 关闭 dropout
model = Net()
model.eval()
model.dropout.p = 0.0
# 打开 dropout
model.train()
model.dropout.p = 0.5
```
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