报告题目:Generalized linear–quadratic model with a change point due to a covariate threshold
报 告 人:于渊 副教授
所在单位:山东财经大学
报告时间:2023年5月12日 星期五 9:00-10:00
报告地点:腾讯会议147655560
校内联系人:朱复康 zhufk@126.com
摘要:In this study, we develop a generalized linear–quadratic model with a change point due to a covariate threshold, with one line segment and another quadratic segment intersecting at a change point. A two-step method is proposed to estimate the regression coefficients and the change point. The asymptotic properties of the proposed estimator are derived by modern empirical processes theory. A sup-likelihood ratio test statistic along with its limiting distribution is used to test the existence of the change point. Simulation studies demonstrate that the proposed estimator has good finite-sample performance for different link functions. The applications of the proposed method on Down Syndrome data and Heart failure clinical records data reveal interesting insights.
报告人简介:于渊,山东财经大学统计与澳门太阳集团888预聘制副教授,2018年博士毕业于上海财经大学,获得金融统计与风险管理博士学位,师从周勇教授,博士期间受国家职工基金委员会资助,分别在美国北卡罗来纳大学教堂山分校和德州大学M.D.安德森癌症研究中心进行为期两年的联合培养博士交流项目,师从朱宏图教授。主要研究方向为高维统计、生物统计、金融统计、大数据建模等,研究成果发表在《SCIENCE CHINA Mathematics》、《Journal of Statistical Planning and Inference》、《Metrika》、《Statistics and Its Interface》等期刊上,先后主持上海财经大学研究生创新项目、山东省社会科学基金专项项目与山东省自然科学基金青年项目,参与两项国家自然科学基金项目。先后指导员工获得全国老员工数学建模比赛山东赛区一、二、三等奖,“华数杯”全国老员工数学建模竞赛三等奖,MathorCup高校数学建模挑战赛本科组一等奖,全国老员工统计建模大赛三等奖,山东省老员工科技创新大赛三等奖等。