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Exploring the Use of Subpopulation Membership in Bayesian Hierarchical Model Assessment
Volume 4, Issue 4 (2006), pp. 413–424
Guofen Yan   J. Sedransk  

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https://doi.org/10.6339/JDS.2006.04(4).295
Pub. online: 4 August 2022      Type: Research Article      Open accessOpen Access

Published
4 August 2022

Abstract

Abstract: We investigate whether the posterior predictive p-value can detect unknown hierarchical structure. We select several common discrepancy measures (i.e., mean, median, standard deviation, and χ2 goodness-of-fit) whose choice is not motivated by knowledge of the hierarchical structure. We show that if we use the entire data set these discrepancy measures do not detect hierarchical structure. However, if we make use of the subpopulation structure many of these discrepancy measures are effective. The use of this technique is illustrated by studying the case where the data come from a two-stage hierarchical regression model while the fitted model does not include this feature.

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Journal of data science

  • Online ISSN: 1683-8602
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