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arXiv 2102.04263math.OCcs.CEcs.LGecon.GNq-fin.ECstat.ML
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基于ARC算法的广义相关批量Bandits及其在动态定价中的应用

Generalised correlated batched bandits via the ARC algorithm with application to dynamic pricing

University of Oxford(牛津大学);Alan Turing Institute(艾伦·图灵研究所)

Samuel Cohen, Tanut Treetanthiploet

摘要:

渐近随机控制(ARC)算法提供了一个严格的近似的最优策略,为广泛的一类贝叶斯土匪,同时保持低的计算复杂性。特别是,ARC方法提供了接近最优的选择,即使当回报是相关的或超过回报的观察。该算法保证渐近优化预期的折扣收益,误差取决于初始的不确定性的强盗。在本文中,我们扩展了ARC框架,考虑一个批量强盗问题的观察到达一个广义线性模型。特别是,我们开发了一个大样本近似,允许相关的和一般分布的观察。我们将其应用到一个经典的动态定价问题的基础上的贝叶斯分层模型,并证明ARC算法优于其他方法。

英文摘要:

The Asymptotic Randomised Control (ARC) algorithm provides a rigorous approximation to the optimal strategy for a wide class of Bayesian bandits, while retaining low computational complexity. In particular, the ARC approach provides nearly optimal choices even when the payoffs are correlated or more than the reward is observed. The algorithm is guaranteed to asymptotically optimise the expected discounted payoff, with error depending on the initial uncertainty of the bandit. In this paper, we extend the ARC framework to consider a batched bandit problem where observations arrive from a generalised linear model. In particular, we develop a large sample approximation to allow correlated and generally distributed observation. We apply this to a classic dynamic pricing problem based on a Bayesian hierarchical model and demonstrate that the ARC algorithm outperforms alternative approaches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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