主 题: An Introduction to Bayesian Hypothesis Testing for ANOVA Designs
内容简介: We explore Bayesian approaches for the hypothesis testing problem in multiway ANOVA models. We first specialize the result in a two-sample scenario as an intermediate step toward developing the Bayes factors for ANOVA designs. Given that the design matrix is not necessarily of full rank, we adopt the sum-to-zero constraint for uniqueness and employ the singular value decomposition (SVD) method to reparameterize the model to get rid of the additional constraint. We then derive the Bayes factors under a class of Zellner’s g-priors. We examine asymptotic properties of the proposed procedures with a diverging dimensionality. Our results indicate that commonly used hyper-priors yield inconsistent Bayes factors due to the presence of an inconsistency region around the null model. We propose a new class of hyper-priors to avoid this inconsistency problem. Simulation studies on two-way ANOVA models are conducted to compare the performance of the proposed priors with that of some existing ones in the literature.
报告人: 汪敏 副教授 博士
时 间: 2018-07-08 10:00
地 点: 竞慧东楼302
举办单位: 统计与数学学院
