Planning to Fairly Allocate: Probabilistic Fairness in the Restless Bandit Setting

Planning to Fairly Allocate: Probabilistic Fairness in the Restless Bandit Setting
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规划公平分配:不安定强盗环境中的概率公平

DOI:
10.1145/3580305.3599467
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发表时间:
2023
期刊:
KDD '23: Proceedings of the 29th ACM SIGKDD Conference on Knowledge Discovery and Data Mining
影响因子:
--
通讯作者:
Dickerson, John P.
Dickerson, John P.
中科院分区:
--
文献类型:
--
作者:
Herlihy, Christine;Prins, Aviva;Srinivasan, Aravind;Dickerson, John P.

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Restless and collapsing bandits are often used to model budget-constrained resource allocation in settings where arms have action-dependent transition probabilities, such as the allocation of health interventions among patients. However, SOTA Whittle-index-based approaches to this planning problem either do not consider fairness among arms, or incentivize fairness without guaranteeing it. We thus introduce ProbFair, a probabilistically fair policy that maximizes total expected reward and satisfies the budget constraint while ensuring a strictly positive lower bound on the probability of being pulled at each timestep. We evaluate our algorithm on a real-world application, where interventions support continuous positive airway pressure (CPAP) therapy adherence among patients, as well as on a broader class of synthetic transition matrices. We find that ProbFair preserves utility while providing fairness guarantees.
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