An asymptotic total variation test for copulas

Details An asymptotic total variation test for copulas An asymptotic total variation test for copulas

2012-03-06

arxiv.org/abs/1203.1243v1

Mathematics

Statistics Theory

Scientific paper

We propose a new goodness-of-fit test for copulas, based on empirical copula processes and their nonparametric bootstrap counterparts. The standard Kolmogorov-Smirnov type test for copulas that takes the supremum of the empirical copula process indexed by half spaces is extended by test statistics based on the supremum of the empirical copula process indexed by partitions of Ln rectangles with Ln slowly tending to infinity. Although the underlying empirical process does not converge, it is proved that the p-values of our new test statistic can be consistently estimated by the bootstrap. Simulations confirm that the power of the new procedure is higher than the power of the standard Kolmogorov-Smirnov test for copulas.

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