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arXiv 1401.7819math.PRmath.STstat.TH
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COGARCH(1,1)模型的高阶矩和基于预测的估计

Higher Moments and Prediction Based Estimation for the COGARCH(1,1) model

Enrico Bibbona, Ilia Negri

摘要:

COGARCH模型是著名的GARCH模型的连续时间版本的财务回报。它们是由Lévy过程驱动的随机微分方程的解。本文的第一个目的是说明如何基于预测的估计函数(PBEF)的方法可以被应用到绘制统计推断从一个离散样本的观测COGARCH(1,1)模型,只要高阶结构的过程是明确的。出于寻找最佳PBEF,本文的第二个目的是提供递归表达式的联合时刻的任何固定顺序的过程中,只要它们存在。给出了渐近结果,仿真研究表明,PBEF方法优于其他可用的估计方法。

英文摘要:

COGARCH models are continuous time version of the well known GARCH models of financial returns. They are solution of a stochastic differential equation driven by a Lévy process. The first aim of this paper is to show how the method of Prediction-Based Estimating Functions (PBEFs) can be applied to draw statistical inference from a discrete sample of observations of a COGARCH(1,1) model as far as the higher order structure of the process is clarified. Motivated by the search for an optimal PBEF, a second aim of the paper is to provide recursive expressions for the joint moments of any fixed order of the process, whenever they exist. Asymptotic results are given and a simulation study shows that the method of PBEF outperforms the other available estimation methods.

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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