Spike-and-Slab Dirichlet Process Mixture Models

DOI: 10.4236/ojs.2012.25066   PDF   HTML     5,602 Downloads   7,884 Views   Citations


In this paper, Spike-and-Slab Dirichlet Process (SS-DP) priors are introduced and discussed for non-parametric Bayesian modeling and inference, especially in the mixture models context. Specifying a spike-and-slab base measure for DP priors combines the merits of Dirichlet process and spike-and-slab priors and serves as a flexible approach in Bayesian model selection and averaging. Computationally, Bayesian Expectation-Maximization (BEM) is utilized to obtain MAP estimates. Two simulated examples in mixture modeling and time series analysis contexts demonstrate the models and computational methodology.

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K. Cui and W. Cui, "Spike-and-Slab Dirichlet Process Mixture Models," Open Journal of Statistics, Vol. 2 No. 5, 2012, pp. 512-518. doi: 10.4236/ojs.2012.25066.

Conflicts of Interest

The authors declare no conflicts of interest.


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