Collection of common code that's shared among different research projects in FAIR computer vision team.
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Why is the sigmoid function applied to logits before calling F.binary_cross_entropy_with_logits? #126
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kirill-menke closed 1 year ago
In focal_loss.py you can find the following code snipped in
sigmoid_focal_lossfunction:https://github.com/facebookresearch/fvcore/blob/fd5043ff8b2e6790f5bd7c9632695c68986cc658/fvcore/nn/focal_loss.py#L35-L36
Why is the sigmoid function applied to the inputs before calculating the loss? Doesn't
F.binary_cross_entropy_with_logitsexpect the raw logits?