Papers

Zichun Xu, Ali Shojaie, Daniela Witten (2026). “Efficient borrowing from external data under exchangeability of functionals.” Manuscript in prepration.
Zichun Xu, Jing Ma (2025). “Bayesian covariance regression for differential network analysis of zero-inflated microbiome data.” [preprint]
Ronan Perry*, Zichun Xu*, Olivia McGough*, Daniela Witten (2024). “Infer-and-widen versus split-and-condition: two tales of selective inference.” [preprint]

Zichun Xu, Daniela Witten, Ali Shojaie (2026). “A unified framework for semiparametrically efficient semi-supervised learning.” To appear in Biometrika. (Student Paper Award at JSM Nonparametric Statistics Section, 2025)
Chang Su, Zichun Xu, Xinning Shan, Biao Cai, Hongyu Zhao, and Jingfei Zhang. “Cell-type-specific co-expression inference from single cell RNA-sequencing data.” Nature Communications (2023). [paper]
Zichun Xu, and Xiaolei Lin. “Probability-of-decision interval 3+ 3 (POD-i3+ 3) design for phase I dose finding trials with late-onset toxicity.” Statistical Methods in Medical Research (2022). [paper]

(*equal contribution or co-first authors)