A Bayesian Nonparametric Multiple Testing Procedure For Comparing Several Treatments Against A Control
BAYESIAN ANALYSIS(2019)
Abstract
We propose a Bayesian nonparametric strategy to test for differences between a control group and several treatment regimes. Most of the existing tests for this type of comparison are based on the differences between location parameters. In contrast, our approach identifies differences across the entire distribution, avoids strong modeling assumptions over the distributions for each treatment, and accounts for multiple testing through the prior distribution on the space of hypotheses. The proposal is compared to other commonly used hypothesis testing procedures under simulated scenarios. Two real applications are also analyzed with the proposed methodology.
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Key words
Bayes factor, Dependent Dirichlet process, spike and slab priors, shift function
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