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arXiv 2103.04277stat.ME
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估计一般缓解的异质性处理效应

Estimating Heterogeneous Treatment Effects for General Responses

Zijun Gao, Trevor Hastie

摘要:

异质处理效应模型允许我们在亚组和个体水平上比较治疗,并且在个性化医疗、广告和教育等应用中越来越受欢迎。在这次演讲中,我们首先调查了实践中使用的不同因果被估量,重点是估计条件均值的差异。然后,我们提出DINA(自然参数差异)来量化指数家族和Cox模型中的异质性处理效应。对于二元结局和生存时间,DINA对于协变量对处理效应的影响建模既方便又实用。其次,我们介绍了一个元算法DINA,它允许从业者使用强大的现成的机器学习工具的滋扰功能的估计,这也是统计稳健的错误不准确的滋扰功能估计。我们证明了我们的方法与各种机器学习基础学习者在模拟和真实数据集相结合的有效性。

英文摘要:

Heterogeneous treatment effect models allow us to compare treatments at subgroup and individual levels, and are of increasing popularity in applications like personalized medicine, advertising, and education. In this talk, we first survey different causal estimands used in practice, which focus on estimating the difference in conditional means. We then propose DINA, the difference in natural parameters, to quantify heterogeneous treatment effect in exponential families and the Cox model. For binary outcomes and survival times, DINA is both convenient and more practical for modeling the influence of covariates on the treatment effect. Second, we introduce a meta-algorithm for DINA, which allows practitioners to use powerful off-the-shelf machine learning tools for the estimation of nuisance functions, and which is also statistically robust to errors in inaccurate nuisance function estimation. We demonstrate the efficacy of our method combined with various machine learning base-learners on simulated and real datasets.

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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