DARC-OR: Dual-Signal Adaptive Recalibration and Concept-Drift Response for Capacity-Constrained Operational-Risk Early Warning
Operational-risk early-warning models in financial institutions operate under nonstationarity, extreme class imbalance, delayed outcome confirmation, and finite investigation capacity. This paper proposes DARC-OR, a drift-response framework that combines an immediately available Jensen-Shannon divergence signal on mode...