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arXiv 1201.3245stat.ME
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极端事件的时空模拟

Space-time modelling of extreme events

Raphaël Huser, A. C. Davison

摘要:

最大稳定过程是模拟空间和时间极端事件的广义极值分布的自然类似物。在适当的条件下,这些过程是随机场的独立重复的最大值的渐近合理模型,它们也适合于高阈值上联合个体极值测量的建模。本文将Schlather(2001)的一个模型推广到空时框架,并证明了在轻度混合条件下,如何利用成对截尾似然估计进行相合估计。估计效率也进行了评估,并讨论了简单的时间序列模型计算的基础上的成对似然对的选择。的想法说明了瑞士每小时的降水数据的应用程序。

英文摘要:

Max-stable processes are the natural analogues of the generalized extreme-value distribution for the modelling of extreme events in space and time. Under suitable conditions, these processes are asymptotically justified models for maxima of independent replications of random fields, and they are also suitable for the modelling of joint individual extreme measurements over high thresholds. This paper extends a model of Schlather (2001) to the space-time framework, and shows how a pairwise censored likelihood can be used for consistent estimation under mild mixing conditions. Estimator efficiency is also assessed and the choice of pairs to be included in the pairwise likelihood is discussed based on computations for simple time series models. The ideas are illustrated by an application to hourly precipitation data over Switzerland.

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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