Abstract
In this paper, a variational Bayesian (VB)-based iterative algorithm for ARX models with random missing outputs is proposed. The distributions of missing outputs can be estimated in the VB-E step, and the distributions of unknown parameters can be estimated in the VB-M step by the estimated missing outputs and the available outputs. Compared with the expectation–maximization-based iterative algorithm, this algorithm computes the latent variable and the parameter distributions at each iteration. Therefore, it is more accurate. The simulation results demonstrate the advantages of the proposed algorithm.
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This work was supported by the National Natural Science Foundation of China (Nos. 61403165, 61374126), the Natural Science Foundation of Jiangsu Province (No. BK20131109) and the Natural Science Foundation for Colleges and Universities in Jiangsu Province (No. 16KJB120006).
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Chen, J., Liu, Y. Variational Bayesian-Based Iterative Algorithm for ARX Models with Random Missing Outputs. Circuits Syst Signal Process 37, 1594–1608 (2018). https://doi.org/10.1007/s00034-017-0612-8
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DOI: https://doi.org/10.1007/s00034-017-0612-8