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arXiv 0912.3091math.PRmath.STstat.TH
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拟Ornstein-Uhlenbeck过程

Quasi Ornstein-Uhlenbeck processes

Ole E. Barndorff-Nielsen, Andreas Basse-O'Connor

摘要:

讨论了由具有平稳增量的噪声过程驱动的Langevin方程的平稳解的存在性和性质,重点讨论了伪移动平均型噪声过程.由于Wold-Karhunen分解定理,这样的解原则上可以表示为移动平均(加上一个类似漂移的同类项项),但移动平均中的核通常不能以显式形式提供。一类的情况下,可以给出一个明确的表达的内核,这是用来获得相关的自相关函数的渐近行为的信息,无论是小的和大的滞后。应用高斯和列维驱动的分数Ornstein-Uhlenbeck过程。一个Fubini定理的Lévy基地建立作为一个元素的导子。

英文摘要:

The question of existence and properties of stationary solutions to Langevin equations driven by noise processes with stationary increments is discussed, with particular focus on noise processes of pseudo-moving-average type. On account of the Wold-Karhunen decomposition theorem, such solutions are, in principle, representable as a moving average (plus a drift-like term) but the kernel in the moving average is generally not available in explicit form. A class of cases is determined where an explicit expression of the kernel can be given, and this is used to obtain information on the asymptotic behavior of the associated autocorrelation functions, both for small and large lags. Applications to Gaussian- and Lévy-driven fractional Ornstein-Uhlenbeck processes are presented. A Fubini theorem for Lévy bases is established as an element in the derivations.

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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