统计与数据科学系系列学术报告之五百一十七期

时间：2026年7月23日（星期四）16:00-17:00

主持人：复旦大学管理学院统计与数据科学系朱仲义教授

地点：史带楼302室

报告人：Professor Annie Qu

University of California, Santa Barbara

题目：Transferring Treatment Effects Across Heterogeneous Sites via Distributional Causal Inference

摘要：We propose a novel framework for synthesizing counterfactual treatment group data in a target site by integrating full treatment and control group data from a source site with control group data from the target. Departing from conventional average treatment effect estimation, our approach adopts a distributional causal inference perspective by modeling treatment and control as distinct probability measures on the source and target sites. We formalize the cross-site heterogeneity (effect modification) as a push-forward transformation that maps the joint feature–outcome distribution from the source to the target site. This transformation is learned by aligning the control group distributions between sites using an Optimal Transport–based procedure, and subsequently applied to the source treatment group to generate the synthetic target treatment distribution. Under general regularity conditions, we establish theoretical guarantees for the consistency and asymptotic convergence of the synthetic treatment group data to the true target distribution. Simulation studies across multiple data-generating scenarios and a real-world application to patient derived xenograft data demonstrate that our framework robustly recovers the full distributional properties of treatment effects.

个人简介：Annie Qu教授现任美国加州大学圣塔芭芭拉分校统计与应用概率系教授、人工智能统计基础中心创始主任。Qu教授长期致力于结构化与非结构化大规模复杂数据分析中的基础问题研究，重点发展面向复杂异构数据的前沿统计方法与理论，研究方向涵盖机器学习、精准医疗算法、文本挖掘、推荐系统、医学影像数据分析以及网络数据分析等领域。

2008年至2019年，她任职于伊利诺伊大学厄巴纳-香槟分校，担任数据科学创始教授及伊利诺伊统计办公室主任；2020年至2025年担任加利福尼亚大学欧文分校Chancellor's Professor。Qu教授曾于2004—2009年获得美国国家科学基金（NSF）CAREER奖资助，是国际数理统计学会会士、美国统计协会会士以及美国科学促进会会士。她于2024年获IMS Medallion Award并受邀担任IMS Medallion Lecturer；2023—2025年担任Journal of the American Statistical Association（JASA） Theory and Methods栏目联合主编，2021—2027年担任IMS项目秘书，2025年担任美国统计协会（ASA）Council of Sections Governing Board Chair。她还荣获2025年IMS Carver Medal和2026年国际华人统计协会（ICSA）杰出成就奖。