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arXiv 0807.5096math.STstat.TH
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周期图的非线性泛函的矩界

Moment bounds for non-linear functionals of the periodogram

Gilles Faÿ

摘要:

本文证明了某些线性时间序列离散傅里叶变换的Edgeworth展开式的有效性。这一结果被应用于周期图的非线性泛函的矩的逼近。作为例子,我们给出了长记忆参数的Geweke和Porter-Hudak估计的均方误差的表达式。我们证明了这个估计是速率最优的,将Giraitis,Robinson,Samarov(1997)的结果从高斯过程推广到线性过程。

英文摘要:

In this paper, we prove the validity of the Edgeworth expansion of the Discrete Fourier transforms of some linear time series. This result is applied to approach moments of non linear functionals of the periodogram. As an illustration, we give an expression of the mean square error of the Geweke and Porter-Hudak estimator of the long memory parameter. We prove that this estimator is rate optimal, extending the result of Giraitis, Robinson, Samarov (1997) from Gaussian to linear processes.

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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