摘要
一般Ⅱ型逐步删失数据是一种重要的获取寿命数据的类型,获取该模型下参数的极大似然估计往往很困难.本文讨论了对数正态分布总体下,利用EM算法,给出了一般Ⅱ型逐步删失数据下参数的极大似然估计,并将其与经典的Newton-Raphson方法进行了数值模拟和比较,结果表明,效果很好.
The general Type-Ⅱprogressive censoring data is an important way for getting the life time data.It is often difficult to obtain the maximum-likelihood estimation.This paper stressed on the lognormal model of the sample space under the general Type-Ⅱprogressive censoring and got the MLE by the EM Algorithm.A computational simulation and comparison is done and the estimates are the same as the MLEs from the Newton-Raphson algorithm and more efficient.
出处
《安徽师范大学学报(自然科学版)》
CAS
北大核心
2014年第6期524-529,共6页
Journal of Anhui Normal University(Natural Science)
基金
江苏经贸职业技术院级课题(2013JSJM051)
南京财经大学校级课题项目(2012JGY1350)
作者简介
王娟(1981-),女,江苏涟水人,讲师,硕士研究生,研究方向:统计推断和数学建模.