Topics on Dynamic Panel Data Models with Random Effects Using Semi-Parametric Bayesian Approach

Iraj Kazemi and Reyhaneh Rikhtehgaran

Communications in Statistics - Theory and Methods, 2014, vol. 43, issue 8, 1630-1648

Abstract: A common assumption in fitting panel data models is normality of stochastic subject effects. This can be extremely restrictive, making vague most potential features of true distributions. The objective of this article is to propose a modeling strategy, from a semi-parametric Bayesian perspective, to specify a flexible distribution for the random effects in dynamic panel data models. This is addressed here by assuming the Dirichlet process mixture model to introduce Dirichlet process prior for the random-effects distribution. We address the role of initial conditions in dynamic processes, emphasizing on joint modeling of start-up and subsequent responses. We adopt Gibbs sampling techniques to approximate posterior estimates. These important topics are illustrated by a simulation study and also by testing hypothetical models in two empirical contexts drawn from economic studies. We use modified versions of information criteria to compare the fitted models.

Date: 2014
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DOI: 10.1080/03610926.2012.673672

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