共 11 条
[11]
WATSON GS, 1983, U ARKANSAS LECTURE N
ON MEDIAN-TYPE ESTIMATORS OF DIRECTION FOR THE VON MISES-FISHER DISTRIBUTION
被引：9
作者：
CHAN, YM
[1
]
HE, XM
[1
]
机构：
[1] UNIV ILLINOIS,DEPT STAT,CHAMPAIGN,IL 61820
来源：
关键词：
ASYMPTOTIC DISTRIBUTION;
DIRECTIONAL DATA;
EFFICIENCY;
GROSS-ERROR SENSITIVITY;
INFLUENCE FUNCTION;
L(1)-ESTIMATOR;
SPATIAL MEDIAN;
SPHERICAL MEDIAN;
VON MISES-FISHER DISTRIBUTION;
D O I：
10.2307/2336878
中图分类号：
Q [生物科学];
学科分类号：
07 ;
0710 ;
09 ;
摘要：
We study three median-type estimators of direction: the normalized spatial median, L(1)-estimator on the sphere and spherical median. Their asymptotic distributions, efficiencies, influence functions and sensitivities are given at the von Mises-Fisher model. A simulation study is also carried out to compare their finite sample performance in terms of mean squared errors. We conclude that overall the normalized spatial median is the preferred estimator.
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页码：869 / 875
页数：7
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