FANG, Xiao 方笑 - STA, CUHK

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FANG, Xiao 方笑

Position	Associate Professor
Email	xfang [at] cuhk.edu.hk
ORCiD	0000-0002-4853-7419
Phone Number	3943 5254
Fax Number	2603 5188
Address	LSB 108
Homepage	https://www.sta.cuhk.edu.hk/xfang

Academic Background

BSc (Peking University)

PhD (National University of Singapore)

Research Interest

Asymptotic theory in probability and statisticsChange-Point AnalysisStein’s Method for Probability Approximations

Selected Publications

(See the full list of publications in my homepage)

• Normal approximation for exponential random graphs. (with Song-Hao Liu and Qi-Man Shao) Preprint (2024).
• High-dimensional central limit theorems by Stein’s method in the degenerate case. (with Yuta Koike, Song-Hao Liu and Yi-Kun Zhao) Preprint (2023).
• From p-Wasserstein bounds to moderate deviations. (with Yuta Koike) Electronic Journal of Probability 28 (2023), 1-52.
• High order steady-state diffusion approximations. (with Anton Braverman and J. G. Dai) To appear in Operations Research.
• Cramér-type moderate deviation for quadratic forms with a fast rate. (with Song-Hao Liu and Qi-Man Shao) Bernoulli 29 (2023), 2466-2491.
• Large-dimensional central limit theorem with fourth-moment error bounds on convex sets and balls. (with Yuta Koike) To appear in Annals of Applied Probability.
• Normal approximation and fourth moment theorems for monochromatic triangles. (with Bhaswar B. Bhattacharya and Han Yan) Random Structures & Algorithms 60 (2022), 25-53.
• High-dimensional central limit theorems by Stein’s method. (with Yuta Koike) Annals of Applied Probability 31 (2021), 1660-1686.
• Segmentation and estimation of change-point models: false positive control and confidence regions. (with Jian Li and David Siegmund) Annals of Statistics 48 (2020), 1615-1647.
• Multivariate normal approximation by Stein’s method: the concentration inequality approach. (with Louis H. Y. Chen) Preprint (2015).

Research Grants

• 2024.1-2026.12, Hong Kong RGC GRF 14303423: Stein’s method, information functionals, and the central limit theorem
• 2023.1-2025.12, Hong Kong RGC GRF 14304822: High-dimensional central limit theorems by Stein’s Method
• 2021.9-2024.8, Hong Kong RGC GRF 14305821: Asymptotic Expansions of Expectations by Stein’s Method
• 2019.1-2021.12, Hong Kong RGC GRF 14302418: Cramér-Type Moderate Deviations by Stein’s Method
• 2018.1-2020.12, Hong Kong RGC ECS 24301617: Kolmogorov Bounds for Normal and Non-normal Approximations

Professional Services

• Invited reviewer for Mathematical Reviews
• Referee for Ann. Appl. Probab., Ann. Probab., Ann. Statist., Bernoulli, J. R. Stat. Soc. Ser. B, etc.

Honours and Awards

• 2010, LAHA Travel Award from the Institute of Mathematical Statistics

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