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PyTorch Loss-Input Confusion (Cheatsheet)

  • torch.nn.functional.binary_cross_entropy takes logistic sigmoid values as inputs
  • torch.nn.functional.binary_cross_entropy_with_logits takes logits as inputs
  • torch.nn.functional.cross_entropy takes logits as inputs (performs log_softmax internally)
  • torch.nn.functional.nll_loss is like cross_entropy but takes log-probabilities (log-softmax) values as inputs
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