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Bayesian Analysis for the Zero-inflated Regression Models
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 Title & Authors
Bayesian Analysis for the Zero-inflated Regression Models
Jang, Hak-Jin; Kang, Yun-Hee; Lee, S.; Kim, Seong-W.;
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We often encounter the situation that discrete count data have a large portion of zeros. In this case, it is not appropriate to analyze the data based on standard regression models such as the poisson or negative binomial regression models. In this article, we consider Bayesian analysis for two commonly used models. They are zero-inflated poisson and negative binomial regression models. We use the Bayes factor as a model selection tool and computation is proceeded via Markov chain Monte Carlo methods. Crash count data are analyzed to support theoretical results.
Zero-inflated model;Bayesian model selection;Bayes factor;Markov chain Monte Carlo;
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