報告人:李忠華 教授
報告題目:A Unified Diagnostic Framework via Symmetrized Data Aggregation
報告時間:2025年11月7日(周五)14:00-15:00
報告地點:云龍校區6號樓304會議室
主辦單位:數學與統計學院、數學研究院、科學技術研究院
報告人簡介:
李忠華,南開大學統計與數據科學學院教授,曾受邀訪問美國北卡羅萊納大學教堂山分校、明尼蘇達大學等。研究方向為統計質量控制、變點、高維統計推斷、網絡數據分析等。合作出版專著1本,發表學術論文50余篇。現任中國數學會概率統計分會副秘書長、中國現場統計研究會統計學歷史與文化分會副理事長、中國優選法統籌法及經濟數學學會工業工程分會常務理事、全國工業統計學教學研究會理事、國際質量工程期刊Quality Engineering編委、美國Mathematical Reviews評論員等。
報告摘要:
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.