Model Selection for Off-Policy Evaluation via Pairwise Bellman Validation
arXiv:2610.35748v1 Announce Type: new Abstract: Model selection and hyperparameter tuning pose a central challenge in off-policy evaluation (OPE) because errors of fitted Q-functions and occupancy-ratio estimates cannot be directly evaluated from held-out transitions. Bellman-residual and minimax v…
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- 2026-10-27 04:00 · arXiv stat.ML
Model Selection for Off-Policy Evaluation via Pairwise Bellman Validation