RMSprop优化器和adam优化器的使用方法
时间: 2023-11-20 11:57:55 浏览: 90
以下是RMSprop优化器和Adam优化器的使用方法:
RMSprop优化器:
```python
import torch
import torch.optim as optim
# 定义模型和损失函数
model = ...
criterion = ...
# 定义优化器
optimizer = optim.RMSprop(model.parameters(), lr=0.001, alpha=0.9)
# 训练模型
for epoch in range(num_epochs):
for data, target in dataset:
optimizer.zero_grad()
output = model(data)
loss = criterion(output, target)
loss.backward()
optimizer.step()
```
Adam优化器:
```python
import torch
import torch.optim as optim
# 定义模型和损失函数
model = ...
criterion = ...
# 定义优化器
optimizer = optim.Adam(model.parameters(), lr=0.001, betas=(0.9, 0.999))
# 训练模型
for epoch in range(num_epochs):
for data, target in dataset:
optimizer.zero_grad()
output = model(data)
loss = criterion(output, target)
loss.backward()
optimizer.step()
```
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