arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.02188math.STstat.TH
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希尔伯特空间值时间序列周期图的最大值

The maximum of the periodogram of Hilbert space valued time series

Clément Cerovecki, Vaidotas Characiejus, Siegfried Hörmann

摘要:

当周期长度未知时,我们感兴趣的是检测希尔伯特空间值时间序列中的周期信号。自然的检验统计量是周期图算子在所有基频上的最大希尔伯特-施密特范数。本文分析了这一检验统计量的渐近分布。我们考虑的情况下,噪声变量是独立的,然后将我们的结果推广到功能的线性过程。为函数自回归过程类提供了实现测试的细节。我们说明了我们的方法的有用性,通过检查奥地利格拉茨的空气质量数据。在有限样本的渐近理论的准确性进行了评估,在模拟实验。

英文摘要:

We are interested to detect periodic signals in Hilbert space valued time series when the length of the period is unknown. A natural test statistic is the maximum Hilbert-Schmidt norm of the periodogram operator over all fundamental frequencies. In this paper we analyze the asymptotic distribution of this test statistic. We consider the case where the noise variables are independent and then generalize our results to functional linear processes. Details for implementing the test are provided for the class of functional autoregressive processes. We illustrate the usefulness of our approach by examining air quality data from Graz, Austria. The accuracy of the asymptotic theory in finite samples is evaluated in a simulation experiment.

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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