学　术

　　本次“学术沙龙”活动人力资源部教师发展中心邀请英国约克大学Wenyang Zhang 教授，与我校师生分享“A New Approach of Multilevel Modelling for Clustered Survival Data”。活动安排如下，欢迎广大师生参加。

　　一、主　题：A New Approach of Multilevel Modelling for Clustered Survival Data

　　二、主讲人：约克大学 Wenyang Zhang 教授

　　三、时　间：2018年6月20日（周三）11:00-12:00

　　四、地　点：清水河校区主楼A1-513

　　五、内容简介：

　　In multilevel modelling for clustered survival data, to account for the difference among different clusters, a commonly used approach is to introduce cluster effects, either random or fixed, in the modelling. The modelling with random effects may lead to difficulties in the implementation of the estimation procedure for the unknown parameters of interest, because numerical computation for multiple integral may become unavoidable when the cluster effects are not scalars. On the other hand, if fixed effects are used, there would be a danger of having estimators with big variances, because there are too many nuisance parameters involved in the model used. In this talk, I will show a new approach of multilevel modelling for clustered survival data. The proposed modelling does not have the potential computational problem which the modelling with random effects does, it also involves far less unknown parameters than the modelling with fixed effects. Some asymptotic properties of the proposed modelling and intensive simulation study results will be presented to demonstrate the advantage of the proposed method.  Finally, I will apply the proposed method to analyze a data set about the second-birth interval in Bangladesh. The findings are quite interesting.

　　六、主讲人简介：

　　张文扬教授是英国顶尖大学约克大学的统计学首席教授。主要从事大数据分析、金融数据分析、高维数据分析、非参数建模、时间序列分析、空间数据分析、多层次建模、生存分析、结构方程模型等方向的研究。曾先后在英国伦敦政治经济学院、英国Kent大学、Bath大学、York大学任教。

　　七、主办单位：人力资源部教师发展中心

　　　　承办单位：数学科学学院

　　　　　　　　　　　　　　　　　　　　人力资源部教师发展中心

　　　　　　　　　　　　　　　　　　　　　　2018年6月18日