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Gluing Copulas
Authors:Karl Friedrich Siburg  Pavel A. Stoimenov
Affiliation:1. Fakult?t für Mathematik , Technische Universit?t Dortmund , Dortmund, Germany karl.f.siburg@math.tu-dortmund.de;3. Fakult?t für Statistik , Technische Universit?t Dortmund , Dortmund, Germany
Abstract:We present a new way of constructing n-copulas, by scaling and gluing finitely many n-copulas. Gluing for bivariate copulas produces a copula that coincides with the independence copula on some grid of horizontal and vertical sections. Examples illustrate how gluing can be applied to build complicated copulas from simple ones. Finally, we investigate the analytical as well as statistical properties of the copulas obtained by gluing, in particular, the behavior of Spearman's ρ and Kendall's τ.
Keywords:Construction of copulas  Copulas  Horizontal section  Kendall's tau  Spearman's rho  Vertical section
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