Prototype loss and anatomy-weighted pooling exhibit non-additive synergy: prototype loss alone reduces recall by 12 points, but combined with anatomy-weighted pooling it increases recall by 6.5 points

A synergy study, backed by embedding geometry and paired-bootstrap confidence intervals, shows that the prototype loss and anatomy-weighted pooling are not additive: applied alone the prototype loss reduces recall by 12 points, but combined with anatomy-weighted pooling it increases recall by 6.5 points

http://arxiv.org/abs/2608.27051v1