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2. An adaptive EWMA median chart for monitoring the process mean

Author

Wu Shu, Xuelong Hu, Zhao Min, Huang Teng, and Anan Tang

Subjects
021103 operations research, Markov chain, Computer science, 0211 other engineering and technologies, Process (computing), Exponentially weighted moving average, 02 engineering and technology, Statistical process control, 01 natural sciences, 010104 statistics & probability, Chart, Control theory, EWMA chart, 0101 mathematics
Abstract

The Adaptive Exponentially Weighted Moving Average (AEWMA) chart is known to combine the Shewhart and the classical EWMA schemes in a smooth way. In this paper, we studied the run length properties of the AEWMA median chart using a Markov chain approach and the performance of the proposed chart is compared with the existing Shewhart and EWMA median charts. The comparative results show that the AEWMA median chart represents a good alternative to achieve a reasonable balance for various shift sizes.

Published
2019
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