Custom loss functions

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CustomLoss

 CustomLoss (loss_func)

A custom loss wrapper class for loss functions to allow them to work with the ‘show_results’ method in fastai.

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TverskyFocalLoss

 TverskyFocalLoss (include_background:bool=True, to_onehot_y:bool=False,
                   sigmoid:bool=False, softmax:bool=False, gamma:float=2,
                   alpha:float=0.5, beta:float=0.99)

Compute Tversky loss with a focus parameter, gamma, applied. The details of Tversky loss is shown in monai.losses.TverskyLoss.