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Large-sample tests of extreme-value dependence for multivariate copulas

机译:多元copulas的极值依赖的大样本检验

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Purpose: To study large-sample tests of extreme-value dependence for multivariate copulas with max-stability characterization. Summary: Marginal cumulative distribution function of random variables forming a d-dimensional random vector are considered to obtain the cumulative distribution function of the overall d-dimension random vector. For this purpose, the terminology of copula is used and it is suggested that under the conditions of max-stable, the copula function becomes an extreme-value copula. It this is an unknown copula, then the problem is to test whether this unknown copula belongs to the class of extreme-value copulas. By empirically estimating the unknown copula form the given data, the test statistics are framed and used for testing the hypothesis. Further, the Monte Carlo experiments for data sets of dimension two to five are presented to study the finite-sample performance of a large number of candidate test statistics. The proposed test procedures are illustrated on bivariate financial data and trivariate geological data.
机译:目的:研究具有最大稳定性特征的多元copula的极值依赖的大样本检验。摘要:考虑了形成d维随机向量的随机变量的边际累积分布函数,以获得整体d维随机向量的累积分布函数。为此,使用了copula的术语,建议在最大稳定的条件下,copula函数成为极值copula。如果这是一个未知的copula,那么问题是要测试这个未知的copula是否属于极值copulas类。通过经验估计给定数据的未知语系,对检验统计量进行框架化,并用于检验假设。此外,提出了针对2至5维数据集的蒙特卡罗实验,以研究大量候选测试统计数据的有限样本性能。在二元财务数据和三元地质数据上说明了建议的测试程序。

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