给你提供了完整代码,但在运行以下代码时出现上述错误,该如何解决?Batch_size = 9 DataSet = DataSet(np.array(x_train), list(y_train)) train_size = int(len(x_train)*0.8) test_size = len(y_train) - train_size train_dataset, test_dataset = torch.utils.data.random_split(DataSet, [train_size, test_size]) TrainDataloader = Data.DataLoader(train_dataset, batch_size=Batch_size, shuffle=False, drop_last=True) TestDataloader = Data.DataLoader(test_dataset, batch_size=Batch_size, shuffle=False, drop_last=True) model = Transformer(n_encoder_inputs=3, n_decoder_inputs=3, Sequence_length=1).to(device) epochs = 10 optimizer = torch.optim.Adam(model.parameters(), lr=0.0001) criterion = torch.nn.MSELoss().to(device) val_loss = [] train_loss = [] best_best_loss = 10000000 for epoch in tqdm(range(epochs)): train_epoch_loss = [] for index, (inputs, targets) in enumerate(TrainDataloader): inputs = torch.tensor(inputs).to(device) targets = torch.tensor(targets).to(device) inputs = inputs.float() targets = targets.float() tgt_in = torch.rand((Batch_size, 1, 3)) outputs = model(inputs, tgt_in) loss = criterion(outputs.float(), targets.float()) print("loss", loss) loss.backward() optimizer.step() train_epoch_loss.append(loss.item()) train_loss.append(np.mean(train_epoch_loss)) val_epoch_loss = _test() val_loss.append(val_epoch_loss) print("epoch:", epoch, "train_epoch_loss:", train_epoch_loss, "val_epoch_loss:", val_epoch_loss) if val_epoch_loss < best_best_loss: best_best_loss = val_epoch_loss best_model = model print("best_best_loss ---------------------------", best_best_loss) torch.save(best_model.state_dict(), 'best_Transformer_trainModel.pth')
时间: 2024-01-27 10:03:40 浏览: 163
根据你提供的完整代码,错误信息可能是在以下部分出现问题:
```python
for index, (inputs, targets) in enumerate(TrainDataloader):
# ...
tgt_in = torch.rand((Batch_size, 1, 3))
outputs = model(inputs, tgt_in)
# ...
```
你在每次循环中都使用 `torch.rand` 函数生成了一个形状为 `(Batch_size, 1, 3)` 的随机张量 `tgt_in`,然后将其作为模型的输入之一。然而,这个随机张量的维度不匹配模型的期望输入维度。
为了解决这个问题,你可以将 `tgt_in` 的维度调整为与模型期望的维度相匹配。根据你之前提供的信息,`n_decoder_inputs` 是模型期望的输入维度,因此可以使用 `torch.rand` 生成一个形状为 `(Batch_size, n_decoder_inputs, Sequence_length)` 的随机张量。根据你的代码,`n_decoder_inputs` 和 `Sequence_length` 都是 3,所以你可以将以下行:
```python
tgt_in = torch.rand((Batch_size, 1, 3))
```
更改为:
```python
tgt_in = torch.rand((Batch_size, 3, 1))
```
这样,`tgt_in` 的维度就与模型的期望输入维度匹配了。请尝试进行这个修改并重新运行代码,看看是否能够解决错误。
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