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2013 | OriginalPaper | Chapter

23. Mean Shifts Identification in Multivariate Autocorrelated Processes Based on PSO-SVM Pattern Recognizer

Authors : Chi Zhang, Zhen He

Published in: Proceedings of 2012 3rd International Asia Conference on Industrial Engineering and Management Innovation (IEMI2012)

Publisher: Springer Berlin Heidelberg

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Abstract

In multivariate statistical process control, interpretation of a signal issued by multivariate control charts is very useful to find source(s) of variation that result in the out-of-control condition. This paper develops a support vector machine(SVM) based model for multivariate autocorrelated processes to diagnose abnormal patterns of process mean changes, and to help identify abnormal variable(s) when residual T2 control chart issue an alarm. Particle swarm optimization (PSO) method is adopted to determine the values of penalty parameter and kernel parameter of the model to improve the performance of the SVM pattern recognizer. The results demonstrate that the proposed method provides an excellent performance in terms of accuracy of classifying patterns of out-of-control signals.

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Metadata
Title
Mean Shifts Identification in Multivariate Autocorrelated Processes Based on PSO-SVM Pattern Recognizer
Authors
Chi Zhang
Zhen He
Copyright Year
2013
Publisher
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-33012-4_23