Estimation of three-parameter exponentiated-Weibull distribution under type-II censoring

被引:13
|
作者
Singh, U [1 ]
Gupta, PK [1 ]
Upadhyay, SK [1 ]
机构
[1] Banaras Hindu Univ, Fac Sci, Dept Stat, Varanasi 221005, Uttar Pradesh, India
关键词
three-parameter exponentiated-Weibull distribution; Bayes estimators; generalized maximum likelihood estimator; maximum likelihood estimators; non-informative prior; type-II censoring; square error; loss function; LINEX loss function;
D O I
10.1016/j.jspi.2004.04.018
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
The present article obtains the point estimators of the exponentiated-Weibull parameters when all the three parameters of the distribution are unknown. Maximum likelihood estimator generalized maximum likelihood estimator and Bayes estimators are proposed for three-parameter exponentiated-Weibull distribution when available sample is type-II censored. Independent non-informative types of priors are considered for the unknown parameters to develop generalized maximum likelihood estimator and Bayes estimators. Although the proposed estimators cannot be expressed in Dice closed forms, these can be easily obtained through the use of appropriate numerical techniques. The performances of these estimators are studied on the basis of their risks, computed separately Under LINEX loss and squared error loss functions through Monte-Carlo simulation technique. An example is also considered to illustrate the estimators. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:350 / 372
页数:23
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