A constructive representation of univariate skewed distributions

被引:77
作者
Ferreira, Jose T. A. S. [1 ]
Steel, Mark F. J.
机构
[1] Endeavour Capital Management, London, England
[2] Univ Warwick, Dept Stat, Coventry CV4 7AL, W Midlands, England
关键词
Arnold and groeneveld skewness measure; Bayesian regression model; inverse probability integral transformation; modality; skewing mechanism; tail behavior;
D O I
10.1198/016214505000001212
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
We introduce a general perspective on the introduction of skewness into symmetric distributions. Through inverse probability integral transformations we provide a constructive representation of skewed distributions, where the skewing mechanism and the original symmetric distributions are specified separately. We study the effects of the skewing mechanism on, e.g., modality, tail behavior and the amount of skewness generated. The representation is used to introduce novel classes of skewed distributions, where we induce certain prespecified characteristics through particular choices of the skewing mechanism. Finally, we use a Bayesian linear regression framework to compare the new classes with some existing distributions in the context of two empirical examples.
引用
收藏
页码:823 / 829
页数:7
相关论文
共 11 条
[1]  
AMORSO L, 1925, ANN MATH, V2, P132
[2]   MEASURING SKEWNESS WITH RESPECT TO THE MODE [J].
ARNOLD, BC ;
GROENEVELD, RA .
AMERICAN STATISTICIAN, 1995, 49 (01) :34-38
[3]   Skewed multivariate models related to hidden truncation and/or selective reporting [J].
Arnold B.C. ;
Beaver R.J. .
Test, 2002, 11 (1) :7-54
[4]  
AZZALINI A, 1985, SCAND J STAT, V12, P171
[5]   On Bayesian modeling of fat tails and skewness [J].
Fernandez, C ;
Steel, MFJ .
JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION, 1998, 93 (441) :359-371
[6]  
FERREIRA JTA, 2006, IN PRESS J ECONOMICS
[7]   Generalized skew-elliptical distributions and their quadratic forms [J].
Genton, MG ;
Loperfido, NMR .
ANNALS OF THE INSTITUTE OF STATISTICAL MATHEMATICS, 2005, 57 (02) :389-401
[8]  
HALL BH, 1993, AM ECON REV, V83, P259
[9]   Families of distributions arising from distributions of order statistics [J].
Jones, MC .
TEST, 2004, 13 (01) :1-+
[10]   A skew extension of the t-distribution, with applications [J].
Jones, MC ;
Faddy, MJ .
JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-STATISTICAL METHODOLOGY, 2003, 65 :159-174