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Bayesian Off-Policy Evaluation and Learning for Large Action Spaces
Feb. 23, 2024, 5:42 a.m. | Imad Aouali, Victor-Emmanuel Brunel, David Rohde, Anna Korba
cs.LG updates on arXiv.org arxiv.org
Abstract: In interactive systems, actions are often correlated, presenting an opportunity for more sample-efficient off-policy evaluation (OPE) and learning (OPL) in large action spaces. We introduce a unified Bayesian framework to capture these correlations through structured and informative priors. In this framework, we propose sDM, a generic Bayesian approach designed for OPE and OPL, grounded in both algorithmic and theoretical foundations. Notably, sDM leverages action correlations without compromising computational efficiency. Moreover, inspired by online Bayesian bandits, …
abstract arxiv bayesian correlations cs.ai cs.lg evaluation framework interactive policy presenting sample spaces stat.ml systems through type
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