淡江大學機構典藏:Item 987654321/97941
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/97941


    Title: Monitoring general linear profiles using simultaneous confidence sets schemes
    Authors: Huwang, Longcheen;Wang, Yi-Hua Tina;Xue, Shuhan;Zou, Changliang
    Contributors: 淡江大學統計學系
    Keywords: Profile monitoring;Simultaneous confidence sets;EWMA;Average run length;Change point estimation;Phase II study
    Date: 2014
    Issue Date: 2014-05-07 15:04:54 (UTC+8)
    Publisher: Pergamon Press
    Abstract: In this article we consider the quality of a process which can be characterized by a general linear profile. For monitoring the general linear profile, we mimic the charting scheme for the distribution of a univariate quality characteristic by using two individual charts for the mean and variance of the profile, respectively. For monitoring the mean of the profile, based on the concept of simultaneous confidence set we propose a novel exponentially weighted moving average (EWMA) chart, which takes the features of the entire profile into account. Then this chart is used together with an EWMA chart for the variance of the profile to monitor the whole profile. Simulation studies show the effectiveness and efficiency of the proposed monitoring scheme. Furthermore, a systematic diagnostic method in the literature is utilized to find the change point location and to identify the parameters of change in the process. Finally, we use an example from semiconductor manufacturing industry to demonstrate the implementation of the proposed monitoring scheme and diagnostic method.
    Relation: Computers & Industrial Engineering 68, pp.1-12
    DOI: 10.1016/j.cie.2013.11.014
    Appears in Collections:[Graduate Institute & Department of Statistics] Journal Article

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