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Optimality Conditions and Algorithms for Top-K Arm Identification. (arXiv:2205.12086v1 [stat.ML])
May 25, 2022, 1:11 a.m. | Zihao Wang, Shuoguang Yang, Wei You
stat.ML updates on arXiv.org arxiv.org
We consider the top-k arm identification problem for multi-armed bandits with
rewards belonging to a one-parameter canonical exponential family. The
objective is to select the set of k arms with the highest mean rewards by
sequential allocation of sampling efforts. We propose a unified optimal
allocation problem that identifies the complexity measures of this problem
under the fixed-confidence, fixed-budget settings, and the posterior
convergence rate from the Bayesian perspective. We provide the first
characterization of its optimality. We provide the …
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