Change-point methods for multivariate time-series: paired vectorial observations

被引：0
作者：
Zdeněk Hlávka
Marie Hušková
Simos G. Meintanis
机构：
[1] Charles University,Department of Economics
[2] Faculty of Mathematics and Physics,Unit for Business Mathematics and Informatics
[3] National and Kapodistrian University of Athens,undefined
[4] North–West University,undefined
来源：
Statistical Papers | 2020年 / 61卷
关键词：
Change-point detection; Empirical characteristic function; Two-sample problem; Resampling procedures; 62L10; 62G10; 62G20;
D O I：
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中图分类号：
学科分类号：
摘要：
We consider paired and two-sample break-detection procedures for vectorial observations and multivariate time series. The new methods involve L2-type criteria based on empirical characteristic functions and are easy to compute regardless of dimension. We obtain asymptotic results that allow for application of the methods to a wide range of settings involving on-line as well as retrospective circumstances with dependence between the two time series as well as with dependence within each series. In the ensuing Monte Carlo study the new detection methods are implemented by means of resampling procedures which are properly adapted to the type of data at hand, be it independent or paired, autoregressive or GARCH structured, medium or heavy-tailed. The new methods are also applied on a real dataset from the financial sector over a time period which includes the Brexit referendum.
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页码：1351 / 1383
页数：32
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