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半参数非线性模型中的t-型估计和影响分析
t-type estimators and influence diagnostics in semiparametric nonlinear models
【摘要】 给出半参数非线性回归模型的t-型估计及其EM算法,同时获得估计的相合性及渐近正态性.并基于EM算法中的Q函数,研究了半参数非线性回归模型的统计诊断方法.最后,用一个模拟例子和一个实际例子验证了本文提出的t-型估计和诊断方法的有效性.
【Abstract】 t-type regression estimators for the semiparametric nonlinear models were defined,and the EM algorithm for the t-type estimators were given.Moreover,the consistency of t-type regression estimators was obtained.And on the basis of the Q-function in the EM algorithm,statistical diagnostics methods were investigated.Finally,the proposed algorithm was tested by simulation analysis and by a real data sample.
【关键词】 半参数模型;
非线性模型;
t-型回归估计;
Cook距离;
局部影响分析;
P-样条;
EM算法;
【Key words】 semiparametric regression; nonlinear model; t-type regression estimator; Cook distance; local influence; penalized spline; EM algorithm;
【Key words】 semiparametric regression; nonlinear model; t-type regression estimator; Cook distance; local influence; penalized spline; EM algorithm;
- 【文献出处】 华东师范大学学报(自然科学版) ,Journal of East China Normal University(Natural Science) , 编辑部邮箱 ,2011年03期
- 【分类号】O212.2
- 【被引频次】1
- 【下载频次】110