Lévy Copulas: Dynamics and Transforms of Upsilon Type
Lévy Copulas: Dynamics and Transforms of Upsilon Type
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Lévy Copulas:Upsilon 类型的动力学和变换
DOI:
10.1111/j.1467-9469.2006.00527.x
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发表时间:
2007
影响因子:
1
通讯作者:
A. Lindner
中科院分区:
文献类型:
--
作者:
O. Barndorff;A. Lindner
Abstract. Lévy processes and infinitely divisible distributions are increasingly defined in terms of their Lévy measure. In order to describe the dependence structure of a multivariate Lévy measure, Tankov (2003) introduced Lévy copulas on . (For an extension to ℝm, see Kallsen & Tankov, 2006 .) Together with the marginal Lévy measures they completely describe multivariate Lévy measures on . In this article we show that any such Lévy copula defines itself a Lévy measure with one‐stable margins, in a canonical way. A limit theorem is obtained, characterizing convergence of Lévy measures with the aid of Lévy copulas. Homogeneous Lévy copulas are considered in detail. They correspond to Lévy processes which have a time‐constant Lévy copula, and a complete description of homogeneous Lévy copulas is obtained. A general scheme to construct multivariate distributions having special properties is outlined, for distributions with prescribed margins having the same properties. This makes use of Lévy copulas and of certain mappings of Upsilon type. The construction is then exemplified for distributions in the Goldie–Steutel–Bondesson class, the Thorin class and for self‐decomposable distributions.
DOI:
--
发表时间:
2006
期刊:
Bernoulli Vol.12, No.1
影响因子:
--
作者:
O.E.Barndorff-Nielsen;M.Taejima;K.Sato
通讯作者:
K.Sato
DOI:
--
发表时间:
2008
期刊:
Stochastic Process. Appl. 118
影响因子:
--
作者:
新居俊作;竹田雅好;S. Taniguchi;Ole E. Barndorf-Nielsen
通讯作者:
Ole E. Barndorf-Nielsen