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arXiv 1603.02802stat.ME
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时间序列数据的半参数广义线性模型

Semiparametric generalized linear models for time-series data

Thomas Fung, Alan Huang

摘要:

人口健康和流行病学中的时间序列数据常常涉及非高斯响应。在本说明中,我们提出了一个半参数广义线性模型框架的时间序列数据,不需要规范的工作条件响应分布的数据。相反,基本的响应分布被视为一个无限维的参数,同时估计与通常的有限维参数通过最大经验似然方法。给出了所得估计量的一般相合性结果。仿真结果表明,估计和推断,使用所提出的方法可以执行以及正确指定的参数模型,即使是中等的样本量,但可以更强大的模型误指定下的参数方法。该方法用于分析Zeger(1988)的脊髓灰质炎数据集和Menendez等人(2015)最近的Kings Cross攻击数据集。

英文摘要:

Time-series data in population health and epidemiology often involve non-Gaussian responses. In this note, we propose a semiparametric generalized linear models framework for time-series data that does not require specification of a working conditional response distribution for the data. Instead, the underlying response distribution is treated as an infinite-dimensional parameter which is estimated simultaneously with the usual finite-dimensional parameters via a maximum empirical likelihood approach. A general consistency result for the resulting estimators is given. Simulations suggest that both estimation and inferences using the proposed method can perform as well as correctly-specified parametric models even for moderate sample sizes, but can be more robust than parametric methods under model misspecification. The method is used to analyse the Polio dataset from Zeger (1988) and a recent Kings Cross assault dataset from Menendez et al. (2015).

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