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A Universal Prior Distribution for Bayesian Consistency of Non parametric Procedures

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  • Yang Xing

Abstract

The introduction of the Hausdorff α-entropy in Xing (2008a), Xing (2008b), Xing (2010), Xing (2011), and Xing and Ranneby (2009) has lead a series of improvements of well-known results on posterior consistency. In this paper we discuss an application of the Hausdorff α-entropy. We construct a universal prior distribution such that the corresponding posterior distribution is almost surely consistent. The approach of the construction of this type of prior distribution is natural, but it works very well for all separable models. We illustrate such prior distributions by examples. In particular, we obtain that if the true density function is known to be some normal probability density function with unknown mean and unknown variance then without any additional assumption one can construct a prior distribution which leads to posterior consistency.

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  • Yang Xing, 2015. "A Universal Prior Distribution for Bayesian Consistency of Non parametric Procedures," Communications in Statistics - Theory and Methods, Taylor & Francis Journals, vol. 44(5), pages 972-982, March.
    • Handle: RePEc:taf:lstaxx:v:44:y:2015:i:5:p:972-982
    DOI: 10.1080/03610926.2012.750361
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