Error message

----> 5 acc = torchmetrics.functional.accuracy(preds, target)

TypeError: accuracy() missing 1 required positional argument: 'task'

python==3.8.18
torch==2.4.1

Solution

• I was learning with a YouTube video & He used the code below

preds = torch.rand(10, 5).softmax(dim=-1)
target = torch.randint(5, (10, ))
print(preds, target)

acc = torchmetrics.functional.accuracy(preds, target)
print(acc)

• However, in the version I use, the user should specify
  task: 'multiclass', 'binary'
• It was just a test so I used the code below

preds = torch.rand(10, 5)
target = torch.zeros(5)
print(preds)
print(target)

acc = torchmetrics.functional.accuracy(preds[0], target, task='binary')
print(acc)

Related Docs

Accuracy — PyTorch-Metrics 1.6.2 documentation