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arXiv 2003.01027math.PRmath.STstat.TH
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分数霍克斯过程

A Fractional Hawkes process

J. Chen, A. G. Hawkes, E. Scalas

摘要:

我们修改ETAS模型,用Mittag-Leffler型内核代替Ogata提出的Pareto型内核。假设核衰减为指数为$β+ 1 \in (1,2]$的幂律,则这种替换具有的优点是Mittag-Leffler函数的拉普拉斯变换是明确已知的,从而导致相关量的更简单计算。

英文摘要:

We modify ETAS models by replacing the Pareto-like kernel proposed by Ogata with a Mittag-Leffler type kernel. Provided that the kernel decays as a power law with exponent $β+ 1 \in (1,2]$, this replacement has the advantage that the Laplace transform of the Mittag-Leffler function is known explicitly, leading to simpler calculation of relevant quantities.

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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