training model = CNNmodel() print(model) criterion = nn.MSELoss() optimizer = torch.optim.Adam(model.parameters(), lr=0.001) epochs = 50 model.train() start_time = time.time() for epoch in range(epochs): for seq, y_train in train_norm: # The gradient is zeroed and initialized before each parameter update optimizer.zero_grad() # reshape # convert to conv1d input size(batch size, channel, series length) y_pred = model(seq.reshape(1,1,-1)) loss = criterion(y_pred, y_train) loss.backward() optimizer.step() print(f'Epoch: {epoch+1:2} Loss: {loss.item():10.8f}') print(f'\nDuration: {time.time() - start_time:.0f} seconds')报错ValueError: not enough values to unpack (expected 2, got 1)
时间: 2023-12-14 10:39:29 浏览: 114
利用torch.nn实现二维卷积python代码
这个错误通常是由于train_norm中的元素不是一个tuple,而是一个单独的tensor引起的。可以在代码中添加一些断点来检查train_norm中每个元素的形状和类型是否正确。如果发现有问题,可以更改train_norm的格式以确保每个元素都是一个tuple,第一个元素是输入序列,第二个元素是目标输出。
另外,您可能需要使用enumerate函数来遍历train_norm中的元素并获取它们的索引,如下所示:
```python
for i, (seq, y_train) in enumerate(train_norm):
# The gradient is zeroed and initialized before each parameter update
optimizer.zero_grad()
# reshape
# convert to conv1d input size(batch size, channel, series length)
y_pred = model(seq.reshape(1,1,-1))
loss = criterion(y_pred, y_train)
loss.backward()
optimizer.step()
print(f'Epoch: {epoch+1:2} Batch: {i+1:3} Loss: {loss.item():10.8f}')
```
这样做可以更好地跟踪模型的训练进度,并且如果出现错误,也可以更轻松地找到问题所在。
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