arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.03482stat.ME
收藏

函数数据中空间簇的检测:新的扫描统计方法

Detecting spatial clusters in functional data: new scan statistic approaches

Camille Frévent, Mohamed-Salem Ahmed, Matthieu Marbac, Michaël Genin

摘要:

我们已经开发了两个扫描统计检测集群的功能数据索引的空间。第一种方法是基于一个适应的功能方差分析和第二个是基于一个分布的自由空间扫描统计的单变量数据。在模拟研究中,无分布方法总是比非参数函数扫描统计量表现得更好,并且对于正态或准正态分布的数据,方差分析的自适应也表现得更好。我们的方法可以检测比非参数方法更小的空间集群。最后,我们使用我们的扫描统计数据的功能数据,以寻找在法国1998年至2013年期间(分为季度)的异常失业率的空间集群。

英文摘要:

We have developed two scan statistics for detecting clusters of functional data indexed in space. The first method is based on an adaptation of a functional analysis of variance and the second one is based on a distribution-free spatial scan statistic for univariate data. In a simulation study, the distribution-free method always performed better than a nonparametric functional scan statistic, and the adaptation of the anova also performed better for data with a normal or a quasi-normal distribution. Our methods can detect smaller spatial clusters than the nonparametric method. Lastly, we used our scan statistics for functional data to search for spatial clusters of abnormal unemployment rates in France over the period 1998-2013 (divided into quarters).

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。

↑