Dependence Properties of B-Spline Copulas
Statistics Theory
2019-02-14 v1 Statistics Theory
Abstract
We construct by using B-spline functions a class of copulas that includes the Bernstein copulas arising in Baker's distributions. The range of correlation of the B-spline copulas is examined, and the Frechet--Hoeffding upper bound is proved to be attained when the number of B-spline functions goes to infinity. As the B-spline functions are well-known to be an order-complete weak Tchebycheff system from which the property of total positivity of any order follows for the maximum correlation case, the results given here extend classical results for the Bernstein copulas. In addition, we derive in terms of the Stirling numbers of the second kind an explicit formula for the moments of the related B-spline functions for nonnegative real numbers.
Cite
@article{arxiv.1902.04749,
title = {Dependence Properties of B-Spline Copulas},
author = {Xiaoling Dou and Satoshi Kuriki and Gwo Dong Lin and Donald Richards},
journal= {arXiv preprint arXiv:1902.04749},
year = {2019}
}