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arXiv 2501.18577stat.MEcs.AIcs.LGstat.ML
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基于插补协变量与非均匀采样的预测驱动推断

Prediction-Powered Inference with Imputed Covariates and Nonuniform Sampling

Institute for Data, Systems, and Society, Massachusetts Institute of Technology(数据、系统与社会研究所,麻省理工学院);Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology(电气工程与计算机科学系,麻省理工学院);Stanford Data Science and Department of Statistics, Stanford University(斯坦福大学数据科学与统计学系)

Dan M. Kluger, Kerri Lu, Tijana Zrnic, Sherrie Wang, Stephen Bates

AI总结:

针对机器学习预测作为统计输入时误差导致标准流程失效的问题,本文拓展Predict-Then-Debias估计量,提出适用于非均匀采样与任意特征插补场景的自助法置信区间,无需额外计算且无模型质量假设,区间宽度不劣于传统方法。

摘要:

机器学习模型正被越来越多地用于生成预测结果,作为后续统计分析的输入数据。例如,基于卫星图像得到的经济与环境指标的计算机视觉预测被用于下游回归任务;类似地,语言模型被广泛用于社会科学研究中近似人类评分与观点。然而,若未能恰当考虑机器学习预测中的误差,会导致标准统计流程失效。此前的研究采用我们所称的Predict-Then-Debias(先预测后去偏)估计量,在机器学习算法插补缺失变量、且假设存在来自目标总体的小型完整样本时,给出有效的置信区间。我们通过引入适用于完整数据为非均匀(即加权、分层或聚类)样本场景、以及任意特征子集被插补场景的自助法置信区间,拓展了该方法的适用范围。重要的是,该方法无需额外计算即可应用于多种场景。我们证明,这些置信区间在不对机器学习模型质量做任何假设的情况下依然有效,且其宽度不会大于未使用机器学习预测的方法得到的区间。

英文摘要:

Machine learning models are increasingly used to produce predictions that serve as input data in subsequent statistical analyses. For example, computer vision predictions of economic and environmental indicators based on satellite imagery are used in downstream regressions; similarly, language models are widely used to approximate human ratings and opinions in social science research. However, failure to properly account for errors in the machine learning predictions renders standard statistical procedures invalid. Prior work uses what we call the Predict-Then-Debias estimator to give valid confidence intervals when machine learning algorithms impute missing variables, assuming a small complete sample from the population of interest. We expand the scope by introducing bootstrap confidence intervals that apply when the complete data is a nonuniform (i.e., weighted, stratified, or clustered) sample and to settings where an arbitrary subset of features is imputed. Importantly, the method can be applied to many settings without requiring additional calculations. We prove that these confidence intervals are valid under no assumptions on the quality of the machine learning model and are no wider than the intervals obtained by methods that do not use machine learning predictions.

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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