Robust estimators for the parameters of multivariate lognormal distribution

被引:5
|
作者
Toma, A [1 ]
机构
[1] Acad Econ Studies, Dept Math, Bucharest, Romania
关键词
multivariate lognormal distribution; influence function; B-robustness;
D O I
10.1081/STA-120021565
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
In this paper, we introduce a class of location and scale estimators for the p-variate lognormal distribution. These estimators are obtained by applying a log transform to the data, computing robust Fisher consistent estimators for the obtained Gaussian data and transforming those estimators for the lognormal using the relationship between the parameters of both distributions. We prove some of the properties of these estimators, such as Fisher consistency, robustness and asymptotic normality.
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页码:1405 / 1417
页数:13
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