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arXiv 1503.00741math.STstat.TH
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函数时间序列长期协方差核估计的渐近正态性

On the asymptotic normality of kernel estimators of the long run covariance of functional time series

István Berkes, Lajos Horváth, Gregory Rice

摘要:

考虑平稳泛函时间序列长期协方差核估计的$L^2$中的渐近正态性。我们的结果是建立在弱相关的伯努利位移结构的基础上的观察,其中包含大多数平稳功能时间序列模型,在温和的条件下。作为推论,我们得到了联合渐近的功能主成分计算的经验长期协方差算子,表明他们有良好的性能是渐近独立的。

英文摘要:

We consider the asymptotic normality in $L^2$ of kernel estimators of the long run covariance kernel of stationary functional time series. Our results are established assuming a weakly dependent Bernoulli shift structure for the underlying observations, which contains most stationary functional time series models, under mild conditions. As a corollary, we obtain joint asymptotics for functional principal components computed from empirical long run covariance operators, showing that they have the favorable property of being asymptotically independent.

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