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《Wuhan University Journal(Natural Science Edition)》 2005-01
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Robust Weighted Two Stages Estimation and Its Application

LI Bi-wen~(1,2), HU Hong-chang~2(1.Department of Mathematics, Huazhong University of Science and Technology,Wuhan 430074,Hubei,China;2.Department of Mathematics,Hubei Normal University,Huangshi 435002,Hubei,China)  
While systematic error is random variable in the paper,we consider a semiparametric regression model by using weighted two stages estimation and robust weighted two stages estimation method,estimators of parameter and nonparameter are attained.Then,influence function and approximately variance-covariance matrix are discussed.And that,these method are used in level net,it illuminates that our methods are validity.
【Fund】: 国家自然科学基金资助项目(40274005);; 湖北省教育厅重大项目(2004Z001)
【CateGory Index】: P207
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