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arXiv 1607.00896math.STstat.TH
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连续时间滑动平均Lévy过程的低频估计

Low frequency estimation of continuous-time moving average Lévy processes

Denis Belomestny, Vladimir Panov, Jeannette Woerner

摘要:

本文研究了具有确定核(\K \)和L{é}vy过程(L\)的$$Z_{t} = \int_{\mathbb{R}}\mathcal{K}(t-s)\, dL_{s},\quad t\in\mathbb{R}$$型连续时间移动平均Lévy过程的统计推断问题.特别考虑了由过程$Z$的低频观测值估计$L$的Lévy测度(ν\).我们构造了一个相容估计,推导了它的收敛速度,并通过一个数值例子说明了它的性能。在技术层面上,主要的挑战是建立一种指数混合的连续时间移动平均Lévy过程。

英文摘要:

In this paper we study the problem of statistical inference for a continuous-time moving average Lévy process of the form $$Z_{t} = \int_{\mathbb{R}}\mathcal{K}(t-s)\, dL_{s},\quad t\in\mathbb{R}$$ with a deterministic kernel (\K\) and a L{é}vy process (L\). Especially the estimation of the Lévy measure (ν\) of $L$ from low-frequency observations of the process $Z$ is considered. We construct a consistent estimator, derive its convergence rates and illustrate its performance by a numerical example. On the technical level, the main challenge is to establish a kind of exponential mixing for continuous-time moving average Lévy processes.

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