cloudyliy

a problem with the backpropagation process

5

The following error occurred when running the code： File "/home/xxx/anaconda3/envs/pytorch/lib/python3.6/site-packages/torch/tensor.py", line 102, in backward torch.autograd.backward(self, gradient, retain_graph, create_graph) File "/home/xxx/anaconda3/envs/pytorch/lib/python3.6/site-packages/torch/autograd/__init__.py", line 90, in backward allow_unreachable=True) # allow_unreachable flag RuntimeError: one...