Binary Cross-Entropy

Weighted Binary Cross-Entropy

• β is utilized to control amount of false negatives and false positives. 

  1. (β > 1) for reducing the false negative. 

  2. (β < 1) for reducing false negative.

Balanced Cross-Entropy

• β = 1 - y/(H*W) with H*W = total pixels.

Focal Loss

• Limit the effect of easy samples on loss functiunStrongly punish