arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1312.2240math.STstat.TH
收藏

自回归过程中任意阶残差相关的检验

Testing for residual correlation of any order in the autoregressive process

Frédéric Proïa

摘要:

我们感兴趣的是在一个稳定的自回归过程中的线性自相关驱动噪声的影响,通常的最小二乘估计的渐近行为。我们表明,最小二乘估计是不一致的,我们建议一个尖锐的分析,其几乎必然的极限值以及它的渐近正态性。我们还建立了驱动噪声序列相关参数估计的几乎必然收敛性和渐近正态性。然后,我们推导出一个统计过程,使任何顺序的自回归模型的残差的相关性测试,给出明显优于常用的组合测试的Ljung-Box和Box-Pierce的结果,并出现优于小样本的Breusch-Godfrey程序。

英文摘要:

We are interested in the implications of a linearly autocorrelated driven noise on the asymptotic behavior of the usual least squares estimator in a stable autoregressive process. We show that the least squares estimator is not consistent and we suggest a sharp analysis of its almost sure limiting value as well as its asymptotic normality. We also establish the almost sure convergence and the asymptotic normality of the estimated serial correlation parameter of the driven noise. Then, we derive a statistical procedure enabling to test for correlation of any order in the residuals of an autoregressive modelling, giving clearly better results than the commonly used portmanteau tests of Ljung-Box and Box-Pierce, and appearing to outperform the Breusch-Godfrey procedure on small-sized samples.

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。

↑