One-Sided Synthetic-RZ control charts: a new method for anomaly detection

Nguyễn, Thị Hiền; Nguyen, Huu Du; Tran, Kim Duc; Hương, Trương Thu; Phung, Kieu-Ha; Nguyen, Luong Ha; Le, Tung; Tran, Kim Phuc

doi:10.1109/nics48868.2019.9023851

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2019 6th NAFOSTED Conference on Information and Computer Science (NICS) 2019

DOI: 10.1109/nics48868.2019.9023851

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One-Sided Synthetic-RZ control charts: a new method for anomaly detection

Thị Hiền Nguyễn

Huu Du Nguyen²,

Kim Duc Tran³

et al.

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2020

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Effect of the measurement errors on two one‐sided Shewhart control charts for monitoring the ratio of two normal variables

Nguyen

Tran

2020

Quality & Reliability Eng

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Monitoring the ratio between two random normal variables plays an important role in many industrial manufacturing processes. In this paper, we suggest designing two one‐sided Shewhart control charts monitoring this ratio. The numerical results show that the one‐sided charts have more advantages compared with the two‐sided Shewhart chart proposed previously in the literature. Moreover, we investigate the effect of measurement error on the performance of these control charts where the measurement error is supposed to follow a linear covariate error model. The change of model parameters from an in‐control condition to an out‐of‐control is presented without using a strict assumption about the independence of the shift size from measurement errors. A valuable finding from this study is that taking multiple measurements per item is not an effective way to reduce the negative effect of measurement error on the Shewhart charts' performance.

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Effect of the measurement errors on two one‐sided Shewhart control charts for monitoring the ratio of two normal variables

Nguyen

Tran

2020

Quality & Reliability Eng

View full text Add to dashboard Cite

show abstract

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One-Sided Synthetic-RZ control charts: a new method for anomaly detection

Cited by 1 publication

References 15 publications

Effect of the measurement errors on two one‐sided Shewhart control charts for monitoring the ratio of two normal variables

Effect of the measurement errors on two one‐sided Shewhart control charts for monitoring the ratio of two normal variables

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