Objective Bayesian Model Discrimination in Follow-up Experimental Designs

An initial screening experiment may lead to ambiguous conclusions regarding the factors which are active in explaining the variation of an outcome variable: thus adding follow-up runs becomes necessary. We propose a fully Bayes objective approach to follow-up designs, using prior distributions suita...

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Published in:arXiv.org 2014-05
Main Authors: Consonni, Guido, Deldossi, Laura
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Bayesian analysis
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description An initial screening experiment may lead to ambiguous conclusions regarding the factors which are active in explaining the variation of an outcome variable: thus adding follow-up runs becomes necessary. We propose a fully Bayes objective approach to follow-up designs, using prior distributions suitably tailored to model selection. We adopt a model criterion based on a weighted average of Kullback-Leibler divergences between predictive distributions for all possible pairs of models. When applied to real data, our method produces results which compare favorably to previous analyses based on subjective weakly informative priors.
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title Objective Bayesian Model Discrimination in Follow-up Experimental Designs
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