Shan Jiao

LeakBench: Auditing Reward Hacking through Prediction-Time Leakage in Clinical Modeling Agents

Autonomous clinical-modeling agents can optimize predictive performance while violating conditions that make a model usable. We introduce LeakBench, an executable, guideline-derived audit suite that tests agent decisions for prediction-time leakage, calibration, site-level evaluation, support awareness, and decision-cu...