Journal of The Japanese Society for Quality Control
Online ISSN : 2432-1044
Print ISSN : 0386-8230
Contributed Peaper
Sampling Strategy for High-Dimensional Process Control in Consideration of Correlations between Control Characteristics
Takehiro KOMODA
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2021 Volume 51 Issue 2 Pages 153-161

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Abstract
 In modern quality control, high-dimensional process control has become increasingly important. In addition to multivariate control chart, sampling strategy in context of limited resources with only partial information available was developed recently. In this article, we propose the sampling strategy which incorporates two new methods. First, we improve statistics in order to choose observing control characteristics in consideration of the correlations. Second, we separate the statistics for selecting characteristics and statistics for determining whether they are in-control or out of control. The two simulations show that this new sampling method has higher detection ability when the mean shift occurs than the conventional method which does not consider the correlations especially in the case that the number of control characteristics is much bigger than that of characteristics which can observed .
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