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arXiv 2201.12831stat.ME
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错误设定下的因果推断:基于倾向得分的调整

Causal inference under mis-specification: adjustment based on the propensity score

David A. Stephens, Widemberg S. Nobre, Erica E. M. Moodie, Alexandra M. Schmidt

摘要:

我们通过倾向得分回归研究了贝叶斯因果推断方法。大部分关于倾向得分方法的贝叶斯文献都依赖于在传统的“似然时间先验”后验推断的背景下不能被视为完全贝叶斯的方法;此外,大多数方法依赖于参数和分布假设,以及假定的正确规范。我们强调,因果推断通常是在设置错误的规格,并制定战略,充分贝叶斯推断,反映这一点。我们专注于决策理论的参数的基础上的方法,并展示如何推断损失最小化的基础上,可以得到有效的和充分的贝叶斯推断。我们提出了一种计算方法的基础上的贝叶斯自助具有良好的贝叶斯和频率属性的推断。

英文摘要:

We study Bayesian approaches to causal inference via propensity score regression. Much of the Bayesian literature on propensity score methods have relied on approaches that cannot be viewed as fully Bayesian in the context of conventional `likelihood times prior' posterior inference; in addition, most methods rely on parametric and distributional assumptions, and presumed correct specification. We emphasize that causal inference is typically carried out in settings of mis-specification, and develop strategies for fully Bayesian inference that reflect this. We focus on methods based on decision-theoretic arguments, and show how inference based on loss-minimization can give valid and fully Bayesian inference. We propose a computational approach to inference based on the Bayesian bootstrap which has good Bayesian and frequentist properties.

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