Author

Bohan Cui

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Preprint Aug 2026

HERALD: Counterfactual Audits and Minimal Repairs for Proof-of-Retrieval Rewards

HERALD is introduced, an offline audit that applies exact same-question interventions, separates candidate-visible from oracle information, and enumerates detector contracts before policy optimization, and separates robust scoring, sparse learning signal, and policy transfer.

Zhuowen Liu, Bohan Cui, YinShang Guo et al. · 0 citations