A CUSUM chart for detecting the intensity ratio of negative events

Liang Qu, Shuguang He, Michael B. C. Khoo and Philippe Castagliola

International Journal of Production Research, 2018, vol. 56, issue 19, 6553-6567

Abstract: This paper developed a single cumulative sum (CUSUM) scheme, called the UCUSUM chart, for simultaneously detecting the size N and time interval T of an event. The new chart used the information of size and frequency of the event and the UCUSUM chart is carried out using the only one statistic U, which contains both T and N; on the other hand, the UCUSUM chart could allocate the detection power to the T shifts and the N shifts. The results present that the UCUSUM chart is significantly powerful compared to other charts which are in the current research with either the time interval T or with the size N. The UCUSUM chart could be applied in many areas including industries and non-industries and the performance of the new chart shows it is much effective in example.

Date: 2018
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DOI: 10.1080/00207543.2017.1398423

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