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    題名: Monitoring general linear profiles using simultaneous confidence sets schemes
    作者: Huwang, Longcheen;Wang, Yi-Hua Tina;Xue, Shuhan;Zou, Changliang
    貢獻者: 淡江大學統計學系
    關鍵詞: Profile monitoring;Simultaneous confidence sets;EWMA;Average run length;Change point estimation;Phase II study
    日期: 2014-02
    上傳時間: 2014-05-07 15:04:54 (UTC+8)
    出版者: Pergamon Press
    摘要: 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.
    關聯: Computers & Industrial Engineering 68, pp.1-12
    DOI: 10.1016/j.cie.2013.11.014
    顯示於類別:[統計學系暨研究所] 期刊論文

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