Did we personalize? Assessing personalization by an online reinforcement learning algorithm using resampling
Did we personalize? Assessing personalization by an online reinforcement learning algorithm using resampling
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我们个性化了吗?
DOI:
10.48550/arxiv.2304.05365
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Susan A. Murphy
中科院分区:
文献类型:
--
作者:
Susobhan Ghosh;Raphael Kim;Prasidh Chhabria;Raaz Dwivedi;Predrag Klasjna;Peng Liao;Kelly W. Zhang;Susan A. Murphy
There is a growing interest in using reinforcement learning (RL) to personalize sequences of treatments in digital health to support users in adopting healthier behaviors. Such sequential decision-making problems involve decisions about when to treat and how to treat based on the user's context (e.g., prior activity level, location, etc.). Online RL is a promising data-driven approach for this problem as it learns based on each user's historical responses and uses that knowledge to personalize these decisions. However, to decide whether the RL algorithm should be included in an ``optimized'' intervention for real-world deployment, we must assess the data evidence indicating that the RL algorithm is actually personalizing the treatments to its users. Due to the stochasticity in the RL algorithm, one may get a false impression that it is learning in certain states and using this learning to provide specific treatments. We use a working definition of personalization and introduce a resampling-based methodology for investigating whether the personalization exhibited by the RL algorithm is an artifact of the RL algorithm stochasticity. We illustrate our methodology with a case study by analyzing the data from a physical activity clinical trial called HeartSteps, which included the use of an online RL algorithm. We demonstrate how our approach enhances data-driven truth-in-advertising of algorithm personalization both across all users as well as within specific users in the study.
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DOI:
--
发表时间:
2021-06
期刊:
Advances in neural information processing systems
影响因子:
--
作者:
Aurélien F. Bibaut;A. Chambaz;Maria Dimakopoulou;Nathan Kallus;M. Laan
通讯作者:
Aurélien F. Bibaut;A. Chambaz;Maria Dimakopoulou;Nathan Kallus;M. Laan
DOI:
--
发表时间:
2020-02
期刊:
Advances in neural information processing systems
影响因子:
--
作者:
Kelly W. Zhang;Lucas Janson;S. Murphy
通讯作者:
Kelly W. Zhang;Lucas Janson;S. Murphy
影响因子:
2.2
作者:
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通讯作者:
Zhang,Fengqing
DOI:
10.1080/01621459.2022.2096620
发表时间:
2021-08
影响因子:
3.7
作者:
Pratik Ramprasad;Yuantong Li;Zhuoran Yang;Zhaoran Wang;W. Sun;Guang Cheng
通讯作者:
Pratik Ramprasad;Yuantong Li;Zhuoran Yang;Zhaoran Wang;W. Sun;Guang Cheng
影响因子:
2.7
作者:
Qian T;Yoo H;Klasnja P;Almirall D;Murphy SA
通讯作者:
Murphy SA