Bayesian Sensitivity Analysis for Missing Data Using the E-value
利用 E-value 对缺失数据开展贝叶斯敏感性分析AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要将因果结论稳健性指标 E-value 扩展至缺失结果,并开展敏感性推断。
利用 E-value 对缺失数据开展贝叶斯敏感性分析AI 解读 ↓
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Sensitivity Analysis is a framework to assess how conclusions drawn from missing outcome data may be vulnerable to departures from untestable underlying assumptions. We extend the E-value, a popular metric for quantifying robustness of causal conclusions, to the setting of missing outcomes. With motivating examples from partially-observed Facebook conversion events, we present methodology for conducting Sensitivity Analysis at scale with three contributions. First, we develop a method for the Bayesian estimation of sensitivity parameters leveraging noisy benchmarks(e.g., aggregated reports for protecting unit-level privacy); both empirically derived subjective and objective priors are explored. Second, utilizing the Bayesian estimation of the sensitivity parameters we propose a mechanism for posterior inference of the E-value via simulation. Finally, closed form distributions of the E-value are constructed to make direct inference possible when posterior simulation is infeasible due to computational constraints. We demonstrate gains in performance over asymptotic inference of the E-value using data-based simulations, supplemented by a case-study of Facebook conversion events.