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均值漂移多臂老虎机最佳臂识别研究

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2026年10月8日,arXiv(Statistics Machine Learning)发表题为《均值漂移多臂老虎机中的最佳臂识别》的论文。论文提出 Shifting Means 设定:K 个臂的平均奖励可随时间整体漂移,仅臂间差距 Δ 保持稳定,目标是在高概率识别最佳臂的同时最小化样本复杂度。作者证明采用 GLRT 停止规则的算法(含 Track-and-Stop)在时变漂移下会失效,并提出 Importance Weights for Shifting Means(ISM)方法作为替代。该研究为一手论文,目前未见后续验证或同行评议结果。

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Oct 8, 2026
  1. arXiv · Statistics Machine Learning
    均值漂移多臂老虎机中的最佳臂识别

    论文提出 Shifting Means 设定:K 个臂的平均奖励可随时间整体漂移,仅臂间差距 Δ 保持稳定,目标是高概率识别最佳臂并最小化样本复杂度。作者证明采用 GLRT 停止规则的算法(含 Track-and-Stop)在时变漂移下失效,转而提出 Importance Weights for Shifting Means(ISM)。

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