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政大機構典藏 > 商學院 > 統計學系 > 期刊論文 > Item 140.119/75861

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题名:	Monitoring and diagnosing process loss using a weighted-loss control chart
作者:	Yang, Su-Fen;Lin, Liang Yu 楊素芬;林亮妤
贡献者:	統計系
关键词:	Control charts;Loss control;Loss functions;Variable sampling intervals;Markov processes
日期:	2014-11
上传时间:	2015-06-16 17:08:50 (UTC+8)
摘要:	Product and service quality and productivity loss are all crucial competitive factors of companies in numerous industries. The loss function is a popular method for measuring the loss caused by variations in product or service quality. This study proposes a weighted-loss (WL) control chart to monitor the loss variation among manufacturing or service processes. Because loss is caused by a quality variable deviating from its target value, we set up two corresponding control charts to diagnose the sources of out-of-control loss and implement processes to correct these losses. We further present a WL chart using optimal variable sampling intervals (VSIs) in order to detect out-of-control losses faster compared with a WL chart using a fixed sampling interval (FSI). An example then demonstrates and evaluates the ability of the proposed VSI WL control chart to monitor and diagnose out-of-control process loss. Numerical analyses indicate that the optimal VSI WL chart outperforms the FSI WL chart, the joint X¯ and S2 charts and the VSI Average Loss chart in detecting out-of-control process loss. Thus, the proposed VSI WL chart is recommended.
關聯:	Quality and Reliability Engineering International, 30(7), 951-959
数据类型:	article
DOI 連結:	http://dx.doi.org/10.1002/qre.1670
DOI:	10.1002/qre.1670
显示于类别:	[統計學系] 期刊論文

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