Goodness-of-fit test for tail copulas modeled by elliptical copulas

摘要

Modeling and estimating a tail copula play an important role in forecasting rare events. Due to their easy simulation, elliptical copulas have been employed in risk management. Recently, Kluppelberg, [Kluppelber, C., Kuhn. G., Peng, L., 2007. Estimating the tail dependence function of an elliptical distribution. Bernoulli 13 (1), 229-251; Kluppelberg, C., Kuhn, G., Peng, L., 2008. Semi-parametric models for the multivariate tail dependence function-the asymptotically dependent case. Scandinavian Journal of Statistics 35, 701-7 18] proposed to model a tail copula by an elliptical copula, which results in an explicit parametric model for the tail copula. In this paper. we propose a goodness-of-fit test for such a parametric model and some real data analyses show that this fitting cannot be rejected. Therefore we demonstrate the practical applicability of this model.