Title :
Bayesian methods for process identification with outliers
Author :
Khatibisepehr, S. ; Biao Huang
Author_Institution :
Dept. of Chem. & Mater. Eng., Univ. of Alberta, Edmonton, AB, Canada
Abstract :
The problem of model identification in the presence of outliers has received great attention and a wide variety of outlier identification approaches have been proposed. Yet, there is a great need to seek for more general solutions and a unified framework to solving various practical problems. We propose to formulate the model identification problem under a robust unified framework consisting of consecutive levels of Bayesian inference. The proposed Bayesian inference scheme not only yields maximum a posteriori (MAP) estimates of model parameters, but also provides an automated mechanism for determining hyperparameters of the model parameters´ prior distributions and for investigating the quality of each data point. The effectiveness of the developed robust framework will be demonstrated on the simulated data-sets.
Keywords :
Bayes methods; identification; maximum likelihood estimation; process control; Bayesian inference scheme; Bayesian methods; MAP; data point quality; maximum a posteriori estimation; model identification; model parameter prior distributions; outlier identification approach; process identification; Bayesian methods; Data models; Estimation; Noise; Optimization; Robustness; Standards;
Conference_Titel :
American Control Conference (ACC), 2012
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4577-1095-7
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2012.6314754