Learning Class Difficulty via Dynamic Focal Attention for Histopathology Segmentation

Lakmali Nadeesha Kumari, Lakmali Nadeesha Kumari Rathukohe Mudiyanselage, Sen-Ching Samson Cheung

Frequency-based loss reweighting, the standard remedy for imbalanced histopathology segmentation, implicitly assumes that rare classes are difficult. Yet difficulty also arises fro…