Hi, about that target with grad_fn. you can forget about it, I just print out a similar variable that looks like the target so it has those grad_fn tracking. For my problem, at first I actually looking for multi class classification but after looking for both description, I think I will try for multi label due to future development as well but since I only have training data for multi class classification, do you think it is still possible to train it like on multi label classification?