Journal of the Korean Statistical Society

The Korean Statistical Society (한국통계학회)
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A Bayesian Test for Simple Tree Ordered Alternative using Intrinsic Priors

  • Kim, Seong W. (Department of Statistics, University of Missouri-Columbia)
  • Published : 1999.03.01
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Abstract

In Bayesian model selection or testing problems, one cannot utilize standard or default noninformative priors, since these priors are typically improper and are defined only up to arbitrary constants. The resulting Bayes factors are not well defined. A recently proposed model selection criterion, the intrinsic Bayes factor overcomes such problems by using a part of the sample as a training sample to get a proper posterior and then use the posterior as the prior for the remaining observations to compute the Bayes factor. Surprisingly, such Bayes factor can also be computed directly from the full sample by some proper priors, namely intrinsic priors. The present paper explains how to derive intrinsic priors for simple tree ordered exponential means. Some numerical results are also provided to support theoretical results and compare with classical methods.

Keywords

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