...other multigroup fairness notions) has recently been shown to be powerful in other settings in TCS, including in omniprediction (arxiv.org/abs/2501.17205), in pseudoentropy characterizations (arxiv.org/abs/2507.05972), and in robust learning (arxiv.org/abs/2604.02555).
Omnipredictors are simple prediction functions that encode loss-minimizing predictions with respect to a hypothesis class $H$, simultaneously for every loss function within a class of losses $L$. In t...
