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arXiv 1707.05033math.STstat.TH
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离散极值

Discrete Extremes

Adrien Hitz, Richard Davis, Gennady Samorodnitsky

摘要:

我们的贡献是扩大适用于离散值数据的极值分析的范围。随机变量$X$的极值通常使用广义帕累托分布建模,这种方法在实践中经常给出良好的结果。当$X$是离散的时,我们分别提出了使用离散广义Pareto分布和广义Zipf分布的两种方法。两者都是理论上的动机,我们表明,他们在估计罕见的事件,在几个模拟和真实的数据情况下,如词频,龙卷风爆发和多胞胎。

英文摘要:

Our contribution is to widen the scope of extreme value analysis applied to discrete-valued data. Extreme values of a random variable $X$ are commonly modeled using the generalized Pareto distribution, a method that often gives good results in practice. When $X$ is discrete, we propose two other methods using a discrete generalized Pareto and a generalized Zipf distribution respectively. Both are theoretically motivated and we show that they perform well in estimating rare events in several simulated and real data cases such as word frequency, tornado outbreaks and multiple births.

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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