半参数广义幂威布尔回归模型的诊断分析  

Diagnostic Analysis for Semi-parametric Generalized Power Weibull Regression Models

作　　者：田厚坤[1] 祝佳佳[1] 解锋昌[1] 

机构地区：[1]南京农业大学理学院,江苏南京210095

出　　处：《河北大学学报（自然科学版）》2010年第6期622-627,共6页Journal of Hebei University(Natural Science Edition)

基　　金：江苏省自然科学基金资助项目(BK2008284)

摘　　要：基于P-样条方法,研究半参数广义幂威布尔回归模型,得到参数的估计量.同时在数据删除模型下探讨了模型的全局影响分析问题,获得了相应的诊断统计量.最后利用蒙特卡洛随机模拟方法,说明了统计量的有效性.Based on P-splines, semi-parametric generalized power Weibull regression models are studied in this work, meanwhile, the parameter estimators are obtained. On the other hand, several diagnostic measures are derived based on case-deletion model. Finally, some simulated examples are given to illustrate our statistic through Monte Carlo simulations.

关 键 词：半参数回归 P-样条 光滑参数 COOK距离 数据删除 

分 类 号：O212.1[理学—概率论与数理统计]