3 papers
stat.ME2025
Fisher's Randomization Test for Causality with General Types of Treatments
Zhen Zhong
We extend Fisher's randomization test (FRT) to test conditional independence between observed outcomes and treatments given covariates in both randomized experiments and observatio…
stat.ME2025
Conditionally Affinely Invariant Rerandomization and its Admissible Complete Class
Zhen Zhong, Donald B. Rubin
Rerandomization utilizes modern computing ability to improve covariate balance while adhering to the randomization principle originally advocated by RA Fisher. Affinely invariant r…
stat.ME2024
A Two-stage Inference Procedure for Sample Local Average Treatment Effects in Randomized Experiments
Zhen Zhong, Per Johansson, Junni L. Zhang
In a given randomized experiment, individuals are often volunteers and can differ in important ways from a population of interest. It is thus of interest to focus on the sample at…