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Missing `optimizer.zero_grad` in `torch` tutorial. #3

Closed ProFatXuanAll closed 3 years ago

ProFatXuanAll commented 4 years ago

Missing optimizer.zero_grad in torch tutorial. We must also add explanation about why we need optimizer.zero_grad.

ProFatXuanAll commented 4 years ago

Not related but I think we should also add another tutorial (or demonstration) about how torch perform auto differentiation

ProFatXuanAll commented 3 years ago

Done.