方法对比

	机器学习增强的断点回归设计	模糊回归断点设计
领域	因果推断	因果推断
方法族	Regression model	Regression model
起源年份	2019	2001
提出者	Imbens & Wager (2019); Calonico, Cattaneo & Farrell (2019)	Hahn, Todd & van der Klaauw
类型	Causal inference / quasi-experimental	Quasi-experimental causal inference
开创性文献	Calonico, S., Cattaneo, M. D., & Farrell, M. H. (2019). Optimal mean squared error bandwidth selection for regression discontinuity designs. Bernoulli, 25(4A), 2703-2729.	Hahn, J., Todd, P., & van der Klaauw, W. (2001). Identification and Estimation of Treatment Effects with a Regression-Discontinuity Design. Review of Economic Studies, 68(1), 201-209.
别名	ML-RDD, ML-augmented RD, data-adaptive RDD, nonparametric RDD with ML	Fuzzy RD, Fuzzy RDD, Fuzzy RD Design, Imperfect RDD
相关	3	5
摘要	Machine learning-augmented regression discontinuity design (ML-RDD) combines the sharp identification logic of classical RDD — exploiting a known assignment cutoff in a running variable — with flexible, data-adaptive ML methods for bandwidth selection, conditional mean estimation, and covariate adjustment. The goal is to recover a more accurate and less assumption-laden estimate of the local average treatment effect at the threshold.	Fuzzy Regression Discontinuity Design (Fuzzy RDD) estimates causal effects when eligibility for a treatment is determined by a threshold on a running variable but actual take-up of that treatment is imperfect — some eligible units do not receive treatment and some ineligible units do. The cutoff acts as an instrument, and the estimand is a Local Average Treatment Effect (LATE) for compliers near the threshold.