十大彩票预测 学术报告[2026]068号

（高水平大学建设系列报告1327号）

报告题目：Semiparametric Efficient Mediation Analysis

报告人：王文武   教授（曲阜师范大学）

报告时间：2026年7月5日 14:30—15:30

报告地点：深圳大学粤海校区汇星楼514会议室

报告摘要：Mediation analysis is a pivotal tool for inferring causal mechanisms in social science and related areas. Traditional ordinary least squares inference is highly sensitive to non-normal errors. Robust alternatives, like least absolute deviation and Huber methods, assume symmetric error distributions and often suffer significant efficiency loss. In this paper, we propose a semiparametric efficient indirect mediation effect estimator (SEIMEE) within the framework of maximum profile likelihood. Without requiring prior error assumptions, SEIMEE automatically captures the underlying data characteristics and asymptotically achieves oracle efficiency. Based on our new estimation framework, we propose the SEIMEE difference and product estimators for the indirect effect and establish the asymptotic distribution for the product estimator. A nonparametric percentile (PRCT) and a bias-corrected (BC) bootstrap procedure are developed to construct robust confidence intervals. To implement our kernel-based methodology, we propose a data-driven bandwidth selection strategy and a stable iterative alternating algorithm. Finite-sample simulation studies demonstrate that the proposed method exhibits superior performance in terms of mean squared error, type I error rates, and statistical power compared to existing methods in most cases. Finally, the effectiveness and practical utility of the proposed method are further validated through real data analysis.

报告人简介：王文武，曲阜师范大学教授，博士生导师，校统计学研究所副所长，院研究生工作负责人；香港大学博士后研究员，香港浸会大学访问学者。研究兴趣包含：非参数统计、稳健统计、机器学习与人工智能、因果推断与政策评估等。目前，主持山东省自然科学基金面上项目1项、教育部人文社科一般项目1项；主持完成国家自然科学基金面上项目1项、国家统计局重点项目1项。已发表SCI/SSCI/CSSCI论文20余篇，包括：统计学权威期刊Journal of the American Statistical Association、Statistics in Medicine、TEST、Computational Statistics & Data Analysis；机器学习与人工智能权威期刊Journal of Machine Learning Research和Knowledge-Based Systems；社会科学权威期刊Structural Equation Modeling、Psychometrika；环境统计顶级期刊Journal of Hazardous Materials；以及中文期刊《统计研究》、《数理统计与管理》等。

邀请人：胡宗良

十大彩票预测

2026年6月26日