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arXiv 1006.1602math.PR
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多元极值的相关性

Dependence of multivariate extremes

Clara Viseu, Luísa Pereira, Ana Paula Martins, Helena Ferreira

摘要:

本文给出了多元极值分布的随机向量的两个子向量独立或完全相依的充要条件,这两个子向量对应于多元平稳序列极值指标最大值的极限分布.这些条件首先涉及序列的多元极值指数之间的关系,其次是衡量两个子向量之间依赖性强度的系数。用自回归序列和3相依序列说明了主要结果。

英文摘要:

We give necessary and sufficient conditions for two sub-vectors of a random vector with a multivariate extreme value distribution, corresponding to the limit distribution of the maximum of a multidimensional stationary sequence with extremal index, to be independent or totally dependent. Those conditions involve first relations between the multivariate extremal indexes of the sequences and secondly a coefficient that measure the strength of dependence between both sub-vectors. The main results are illustrated with an auto-regressive sequence and a 3-dependent sequence.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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