news | Qi Xu

Dec 01, 2025	A new paper on sleep pattern change over pregnancy is accepted in [Frontiers in Global Women’s Health]. A series of work for maternal health can be found in [paper 1], [paper 2], [paper 3] and [abstract].
Sep 30, 2025	New Preprint Available: Blockwise Missingness meets AI [Arxiv]. Our new work tackles a long-standing challenge in statistics: semiparametric inference for data with non-monotone missing patterns. For over 30 years, the theoretically optimal estimator has been known but considered computationally intractable for practical use. We introduce an elegant RAY approximation to the optimal estimating equation, striking a crucial balance between statistical efficiency and computational feasibility. This approach can be seamlessly integrated into both classical semiparametric and modern prediction-powered inference frameworks, offering a powerful new tool for researchers.

Dec 01, 2025

A new paper on sleep pattern change over pregnancy is accepted in [Frontiers in Global Women’s Health]. A series of work for maternal health can be found in [paper 1], [paper 2], [paper 3] and [abstract].

Sep 30, 2025

New Preprint Available: Blockwise Missingness meets AI [Arxiv]. Our new work tackles a long-standing challenge in statistics: semiparametric inference for data with non-monotone missing patterns. For over 30 years, the theoretically optimal estimator has been known but considered computationally intractable for practical use. We introduce an elegant RAY approximation to the optimal estimating equation, striking a crucial balance between statistical efficiency and computational feasibility. This approach can be seamlessly integrated into both classical semiparametric and modern prediction-powered inference frameworks, offering a powerful new tool for researchers.