arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1704.04040math.STstat.TH
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时间连续过程跳跃行为渐变的非参数推断

Nonparametric inference of gradual changes in the jump behaviour of time-continuous processes

Michael Hoffmann, Mathias Vetter, Holger Dette

摘要:

在应用中,随机特征的性质通常是逐渐变化的,而不是突然变化的,也就是说:经过一段时间的恒定相位后,它们开始慢慢变化。在本文中,我们讨论了统计推断的检测和局部化的逐步变化的跳跃特征的离散观察伊藤半鞅。我们提出了一个新的措施的时间变化的跳跃行为的过程。相应的估计的统计不确定性进行了分析,推导出新的结果的弱收敛的序列经验尾积分过程和相应的乘子自助程序。

英文摘要:

In applications the properties of a stochastic feature often change gradually rather than abruptly, that is: after a constant phase for some time they slowly start to vary. In this paper we discuss statistical inference for the detection and the localisation of gradual changes in the jump characteristic of a discretely observed Ito semimartingale. We propose a new measure of time variation for the jump behaviour of the process. The statistical uncertainty of a corresponding estimate is analyzed by deriving new results on the weak convergence of a sequential empirical tail integral process and a corresponding multiplier bootstrap procedure.

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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