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AI 根据所提供的论文材料归类:摘要专门研究大数据因果效应估计的标准误和置信区间计算。

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关注这篇论文的作者
Matthew Kosko
Lin Wang

大规模数据因果推断的快速自助法算法

研究问题
大规模实验和观测数据中,如何降低复杂因果估计量进行 bootstrap 的计算负担,同时保持标准误与置信区间的可靠性?
方法与思路
作者将 bag of little bootstraps 思路扩展至因果推断,提出 causal bag of little bootstraps,并以模拟和激素治疗应用评估性能。
材料陈述的贡献
摘要称新算法提高传统 bootstrap 的计算效率,提供一致估计和良好区间覆盖,并比较偏差、百分之九十五区间覆盖率与耗时。
阅读关注点
应核对子样本与重抽样方案、适用因果估计量、一致性和覆盖条件,并比较相同计算预算下的区间表现及参数选择。
阅读边界
来源为 arXiv 预印本,同行评审及期刊接收未经核实;摘要未说明一致性对象、适用估计量范围或效率提升的具体数值。

原文摘要

Estimating causal effects from large experimental and observational data has become increasingly prevalent in both industry and research. The bootstrap is an intuitive and powerful technique used to construct standard errors and confidence intervals of estimators. Its application however can be prohibitively demanding in settings involving large data. In addition, modern causal inference estimators based on machine learning and optimization techniques exacerbate the computational burden of the bootstrap. The bag of little bootstraps has been proposed in non-causal settings for large data but has not yet been applied to evaluate the properties of estimators of causal effects. In this paper, we introduce a new bootstrap algorithm called causal bag of little bootstraps for causal inference with large data. The new algorithm significantly improves the computational efficiency of the traditional bootstrap while providing consistent estimates and desirable confidence interval coverage. We describe its properties, provide practical considerations, and evaluate the performance of the proposed algorithm in terms of bias, coverage of the true 95% confidence intervals, and computational time in a simulation study. We apply it in the evaluation of the effect of hormone therapy on the average time to coronary heart disease using a large observational data set from the Women's Health Initiative.

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