class BCEAfterSigmoidLoss(reduction='mean')[source]

Bases: PointwiseLoss

The numerically unstable version of explicit Sigmoid + BCE loss.


The related torch module is torch.nn.BCELoss, but it can not be used interchangeably in PyKEEN because of the extended functionality implemented in PyKEEN’s loss functions.

Initialize the loss.


reduction (str) – the reduction, cf. _Loss.__init__

Methods Summary

forward(logits, labels, **kwargs)

Define the computation performed at every call.

Methods Documentation

forward(logits, labels, **kwargs)[source]

Define the computation performed at every call.

Should be overridden by all subclasses.


Although the recipe for forward pass needs to be defined within this function, one should call the Module instance afterwards instead of this since the former takes care of running the registered hooks while the latter silently ignores them.

Return type:


  • logits (FloatTensor) –

  • labels (FloatTensor) –