报告人:李忠华 教授
报告题目:A Unified Diagnostic Framework via Symmetrized Data Aggregation
报告时间:2025年11月7日(周五)14:00-15:00
报告地点:云龙校区6号楼304会议室
主办单位:数学与统计学院、数学研究院、科学技术研究院
报告人简介:
李忠华,南开大学统计与数据科学学院教授,曾受邀访问美国北卡罗莱纳大学教堂山分校、明尼苏达大学等。研究方向为统计质量控制、变点、高维统计推断、网络数据分析等。合作出版专著1本,发表学术论文50余篇。现任中国数学会概率统计分会副秘书长、中国现场统计研究会统计学历史与文化分会副理事长、中国优选法统筹法及经济数学学会工业工程分会常务理事、全国工业统计学教学研究会理事、国际质量工程期刊Quality Engineering编委、美国Mathematical Reviews评论员等。
报告摘要:
In statistical process control (SPC) of high-dimensional data streams, besides online monitoring of abnormal changes, fault diagnosis of responsible components has become increasingly important. In this talk, we introduce a new procedure to control the false discovery rate (FDR) of fault diagnosis. The proposed method formulates the fault diagnosis as a variable selection problem and utilizes the symmetrized data aggregation (SDA) technique via sample splitting, data screening, and information pooling to control the FDR. Under some mild conditions, we show that the proposed method can achieve FDR control asymptotically. Extensive numerical studies and real-data examples demonstrate satisfactory FDR control and remarkable diagnostic power in comparison to existing methods.


