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arXiv 2004.01218stat.MEcs.AIcs.LG
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干扰作用下动态处理方案的一般识别

General Identification of Dynamic Treatment Regimes Under Interference

Johns Hopkins University(约翰斯·霍普金斯大学);Adobe Inc.(奥多比公司)

Eli Sherman, David Arbour, Ilya Shpitser

摘要:

在许多应用领域,研究人员往往有兴趣定制治疗单位级的特点,以优化感兴趣的结果。确定和估计治疗策略的方法是动态治疗方案文献的主题。另外,在许多情况下,由于受试者间的依赖性,数据独立且同分布的假设不成立。受试者的结果取决于其邻居的暴露的现象被称为干扰。这些领域在无数的现实世界中相互交叉。在本文中,我们考虑的问题,确定最佳的治疗政策存在的干扰。使用干扰的一般表示,通过Lauritzen-Werken-Freydenburg链图(Lauritzen和Richardson,2002),我们正式确定了干扰下的各种政策干预,并扩展了现有的识别理论(Tian,2008; Sherman和Shpitser,2018)。最后,我们在一个模拟研究中说明了干扰下的政策最大化的功效。

英文摘要:

In many applied fields, researchers are often interested in tailoring treatments to unit-level characteristics in order to optimize an outcome of interest. Methods for identifying and estimating treatment policies are the subject of the dynamic treatment regime literature. Separately, in many settings the assumption that data are independent and identically distributed does not hold due to inter-subject dependence. The phenomenon where a subject's outcome is dependent on his neighbor's exposure is known as interference. These areas intersect in myriad real-world settings. In this paper we consider the problem of identifying optimal treatment policies in the presence of interference. Using a general representation of interference, via Lauritzen-Wermuth-Freydenburg chain graphs (Lauritzen and Richardson, 2002), we formalize a variety of policy interventions under interference and extend existing identification theory (Tian, 2008; Sherman and Shpitser, 2018). Finally, we illustrate the efficacy of policy maximization under interference in a simulation study.

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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