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arXiv 2103.14401stat.ME
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研究多元函数数据的空间扫描统计

Investigating spatial scan statistics for multivariate functional data

Camille Frévent, Mohamed-Salem Ahmed, Sophie Dabo-Niang, Michaël Genin

摘要:

本文介绍了一种新的空间索引的多元函数数据的扫描统计量。新的方法是从MANOVA检验统计量的功能数据,适应的Hotelling T2-检验统计量,和多变量扩展的Wilcoxon秩和检验统计量。在仿真研究中,后两种方法表现出非常好的性能,功能MANOVA的适应也表现出良好的性能为正态分布。我们的方法检测更准确的空间集群比现有的非参数功能扫描统计。最后,我们应用多元函数数据的方法来搜索2020年5月和6月法国北部空气污染物日浓度异常的空间集群。

英文摘要:

This paper introduces new scan statistics for multivariate functional data indexed in space. The new methods are derivated from a MANOVA test statistic for functional data, an adaptation of the Hotelling T2-test statistic, and a multivariate extension of the Wilcoxon rank-sum test statistic. In a simulation study, the latter two methods present very good performances and the adaptation of the functional MANOVA also shows good performances for a normal distribution. Our methods detect more accurate spatial clusters than an existing nonparametric functional scan statistic. Lastly we applied the methods on multivariate functional data to search for spatial clusters of abnormal daily concentrations of air pollutants in the north of France in May and June 2020.

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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