Complete monotonicity of the entropy in the central limit theorem for gamma and inverse Gaussian distributions

被引:4
|
作者
Yu, Yaming [1 ]
机构
[1] Univ Calif Irvine, Dept Stat, Irvine, CA 92697 USA
关键词
D O I
10.1016/j.spl.2008.08.008
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
Let be the differential entropy of the gamma distribution Gam(alpha, root alpha). It is shown that (1/2) log(2 pi e) - H(g) (alpha) is a completely monotone function of alpha. This refines the monotonicity of the entropy in the central limit theorem for gamma random variables. A similar result holds for the inverse Gaussian family. How generally this complete monotonicity holds is left as an open problem. (c) 2008 Elsevier B.V. All rights reserved.
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页码:270 / 274
页数:5
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