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分层反应时间模型的贝叶斯估计和最大似然估计

Bayesian and maximum likelihood estimation of hierarchical response time models.

作者信息

Farrell Simon, Ludwig Casimir J H

机构信息

University of Bristol, Bristol, England.

出版信息

Psychon Bull Rev. 2008 Dec;15(6):1209-17. doi: 10.3758/PBR.15.6.1209.

Abstract

Hierarchical (or multilevel) statistical models have become increasingly popular in psychology in the last few years. In this article, we consider the application of multilevel modeling to the ex-Gaussian, a popular model of response times. We compare single-level and hierarchical methods for estimation of the parameters of ex-Gaussian distributions. In addition, for each approach, we compare maximum likelihood estimation with Bayesian estimation. A set of simulations and analyses of parameter recovery show that although all methods perform adequately well, hierarchical methods are better able to recover the parameters of the ex-Gaussian, by reducing variability in the recovered parameters. At each level, little overall difference was observed between the maximum likelihood and Bayesian methods.

摘要

在过去几年中,分层(或多级)统计模型在心理学领域越来越受欢迎。在本文中,我们考虑将多级建模应用于前高斯分布,这是一种常用的反应时间模型。我们比较了单级和分层方法来估计前高斯分布的参数。此外,对于每种方法,我们还比较了最大似然估计和贝叶斯估计。一组参数恢复的模拟和分析表明,尽管所有方法的表现都相当不错,但分层方法通过减少恢复参数的变异性,能更好地恢复前高斯分布的参数。在每个层面上,最大似然法和贝叶斯法之间总体差异不大。

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