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arXiv 2303.16639math.STstat.TH
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含系统噪声的高斯混合效应模型的局部似然渐近性研究

On local likelihood asymptotics for Gaussian mixed-effects model with system noise

Takumi Imamura, Hiroki Masuda, Hayato Tajima

AI总结:

针对由平稳积分OU过程驱动、含系统噪声的高斯混合效应模型,本文证明其对数似然的局部渐近性,确立MLE的渐近最优性,并通过平衡与非平衡数据模拟验证渐近正态性。

摘要:

由平稳积分Ornstein-Uhlenbeck过程驱动的高斯混合效应模型,已被用于分析纵向数据,该模型在每个个体内具有明确且简单的序列相关结构。然而,其渐近推断的理论方面仍有待阐明。我们证明了相关对数似然函数的局部渐近性,这尤其保证了适当选取的最大似然估计量的渐近最优性。我们通过针对平衡和非平衡数据集的若干模拟,说明了所得渐近正态性结果。

英文摘要:

The Gaussian mixed-effects model driven by a stationary integrated Ornstein-Uhlenbeck process has been used for analyzing longitudinal data having an explicit and simple serial-correlation structure in each individual. However, the theoretical aspect of its asymptotic inference is yet to be elucidated. We prove the local asymptotics for the associated log-likelihood function, which in particular guarantees the asymptotic optimality of the suitably chosen maximum-likelihood estimator. We illustrate the obtained asymptotic normality result through some simulations for both balanced and unbalanced datasets.

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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