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arXiv 2602.16540stat.MEmath.STstat.TH
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由潜在过程驱动的广义线性模型:渐近理论与应用

Generalised Linear Models Driven by Latent Processes: Asymptotic Theory and Applications

University College Dublin(都柏林大学学院);City University of Hong Kong(香港城市大学)

Wagner Barreto-Souza, Ngai Hang Chan

AI总结:

本文提出了一种由潜在过程驱动的广义线性模型,扩展了现有方法,允许响应分布属于双参数指数族,并提供了预测和推断的理论框架及实际应用案例。

摘要:

本文介绍了一类由潜在过程驱动的广义线性模型(GLMs),用于建模计数、实值、二元和正连续时间序列。在扩展先前基于泊松或单参数指数族假设的潜在过程回归框架基础上,我们允许响应的条件分布属于双参数指数族,其中潜在过程以乘法方式进入条件均值。这种形式显著扩展了潜在过程GLMs的范围,例如,它自然地容纳了伽马响应以正连续数据,使未知离散参数可通过矩方法进行估计,并避免了现有方法中因限制链接函数条件而产生的严格条件。我们建立了从忽略潜在过程的GLM似然获得的GLM估计量的渐近正态性,并推导了正确的信息矩阵以进行有效推断。此外,我们提供了一种在由潜在过程驱动的GLMs中的预测和预测的系统方法,这是文献中尚未解决的问题。我们展示了两个真实数据应用:北莱茵-威斯特法伦(德国)的麻疹感染和古气候冰川年轮,这些应用突显了所提出建模框架的实际优势和增强的灵活性。

英文摘要:

This paper introduces a class of generalised linear models (GLMs) driven by latent processes for modelling count, real-valued, binary, and positive continuous time series. Extending earlier latent-process regression frameworks based on Poisson or one-parameter exponential family assumptions, we allow the conditional distribution of the response to belong to a bi-parameter exponential family, with the latent process entering the conditional mean multiplicatively. This formulation substantially broadens the scope of latent-process GLMs, for instance, it naturally accommodates gamma responses for positive continuous data, enables estimation of an unknown dispersion parameter via method of moments, and avoids restrictive conditions on link functions that arise under existing formulations. We establish the asymptotic normality of the GLM estimators obtained from the GLM likelihood that ignores the latent process, and we derive the correct information matrix for valid inference. In addition, we provide a principled approach to prediction and forecasting in GLMs driven by latent processes, a topic not previously addressed in the literature. We present two real data applications on measles infections in North Rhine-Westphalia (Germany) and paleoclimatic glacial varves, which highlight the practical advantages and enhanced flexibility of the proposed modelling framework.

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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