兰州大学学报(自然科学版)
蘭州大學學報(自然科學版)
란주대학학보(자연과학판)
JOURNAL OF LANZHOU UNIVERSITY(NATURAL SCIENCES)
2014年
2期
255-260,266
,共7页
最大似然估计%EM算法%循序型删失%Fisher信息矩阵
最大似然估計%EM算法%循序型刪失%Fisher信息矩陣
최대사연고계%EM산법%순서형산실%Fisher신식구진
maximum likelihood estimation%EM algorithm%progressive censoring%Fisher information matrix
研究了在循序-Ⅰ型删失数据情形下广义Pareto分布的统计推断问题,讨论了广义Pareto分布未知参数的最大似然估计(MLE).由于数据的缺失,采用EM方法来获得参数的MLE.基于遗失信息原则,给出了观测Fisher信息矩阵,进而给出未知参数的区间估计.通过数值模拟,讨论本文提出的方法.
研究瞭在循序-Ⅰ型刪失數據情形下廣義Pareto分佈的統計推斷問題,討論瞭廣義Pareto分佈未知參數的最大似然估計(MLE).由于數據的缺失,採用EM方法來穫得參數的MLE.基于遺失信息原則,給齣瞭觀測Fisher信息矩陣,進而給齣未知參數的區間估計.通過數值模擬,討論本文提齣的方法.
연구료재순서-Ⅰ형산실수거정형하엄의Pareto분포적통계추단문제,토론료엄의Pareto분포미지삼수적최대사연고계(MLE).유우수거적결실,채용EM방법래획득삼수적MLE.기우유실신식원칙,급출료관측Fisher신식구진,진이급출미지삼수적구간고계.통과수치모의,토론본문제출적방법.
The statistical inference problems on generalized Pareto distribution with progressive type-Ⅰ cen-soring scheme were studied. The maximum likelihood estimates (MLEs) of parameter were discussed and the EM algorithm was applied to deal with this incomplete data case for computing MLEs. Using the missing informa-tion principle, the observed Fisher information matrix was obtained for constructing the asymptotic confidence interval for parameters. The method was discussed via simulation studies.