Journal of Qujing Normal University ›› 2023, Vol. 42 ›› Issue (3): 1-8.

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Bayesian Inference of Hidden Nonhomogeneous Markov Model

SHEN Xiujuan, GENG Mi   

  1. School of Mathematics and Statistics,Qujing Normal University,Qujing Yunnan 655011,China
  • Received:2023-03-02 Online:2023-05-26 Published:2023-06-30

Abstract: At present, heterogeneous longitudinal data are often encountered in many fields such as pedagogy, psychology, economics, and sociology. Hidden Markov model has attracted extensive attention because of its good modeling and analysis effect on heterogeneous longitudinal data. This paper introduces the non-homogeneous Markov state transition mode and combines it with multivariate normal distribution to propose a hidden nonhomogeneous Markov multivariate normal distribution model. Firstly, the mathematical definition of hidden nonhomogeneous Markov multivariate normal distribution model is introduced. Then, the derivation process of the posterior distribution of model parameters and the design of MCMC algorithm are introduced in detail, and four simulation experiments are set for comparative analysis. The results show that the Bayesian inference method is reliable. In addition, the main contribution of this paper is to show that hidden nonhomogeneous Markov model can cover homogeneous hidden Markov model, which is more widely used.

Key words: hidden nonhomogeneous Markov model, multivariate normal distribution, Bayesian inference, MCMC algorithm

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