Bayesian analysis of finite mixtures of multinomial and negative-multinomial distributions
Computational Statistics & Data Analysis
Inference on exponential families with mixture of prior distributions
Computational Statistics & Data Analysis
New approaches to compute Bayes factor in finite mixture models
Computational Statistics & Data Analysis
Hi-index | 0.00 |
This paper deals with the Bayesian analysis of finite mixture models with a fixed number of component distributions from natural exponential families with quadratic variance function (NEF-QVF). A unified Bayesian framework addressing the two main difficulties in this context is presented, i.e., the prior distribution choice and the parameter unidentifiability problem. In order to deal with the first issue, conjugate prior distributions are used. An algorithm to calculate the parameters in the prior distribution to obtain the least informative one into the class of conjugate distributions is developed. Regarding the second issue, a general algorithm to solve the label-switching problem is presented. These techniques are easily applied in practice as it is shown with an illustrative example.