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Simulation of certain multivariate generalized Pareto distributions

机译:某些多元广义Pareto分布的仿真

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The investigation of multivariate generalized Pareto distributions (GPDs) has begun only recently. For further progress with these distributions simulation methods are an important part. We describe several methods of simulating GPDs, beginning with an efficient method for the logistic GPD. The algorithm is based on the Shi transformation, which was already used for the simulation of multivariate extreme value distributions (EVDs) of logistic type. In the sequel another algorithm is presented simulating a broader class of GPDs. Due to its numerical complexity it is only practicably applicable in low dimensions. A method is given to generate unconditional GPD random vectors from conditionally GPD distributed random vectors. A short application of the simulation methods in the analysis of a real hydrological data set concludes the article.
机译:多元广义帕累托分布(GPD)的研究才刚刚开始。对于这些分布的进一步发展,仿真方法是重要的部分。我们描述了几种模拟GPD的方法,首先介绍了一种用于逻辑GPD的有效方法。该算法基于Shi变换,该变换已用于模拟逻辑类型的多元极值分布(EVD)。在续篇中,提出了另一种算法,用于模拟更广泛的GPD。由于其数值复杂性,它仅在实践中适用于小尺寸。给出了一种从有条件的GPD分布随机向量生成无条件的GPD随机向量的方法。本文总结了模拟方法在实际水文数据集分析中的简短应用。

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