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title

Phase I monitoring of simple linear profiles in multistage processes in the presence of outliers

Credit to Download: 1 | Page Numbers 7 | Abstract Views: 151
Year: 2017
COI code: IIEC14_024
Paper Language: English

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Authors Phase I monitoring of simple linear profiles in multistage processes in the presence of outliers

  Majid Khedmati - Department of Industrial Engineering, Sharif University of Technology, Tehran, Iran
Mohammad J avad Azizi - University of Southern California, Los Angeles, USA
  Seyed Taghi Akhavan Niaki - Department of Industrial Engineering, Sharif University of Technology, Tehran, Iran

Abstract:

In this paper monitoring of simple linear profiles in multistage processes in the presence of outliers is studied in which a robust approach based on the Huber’s M-estimator is proposed to estimate the parameters of the profile in each stage of the process and consequently eliminate the effect of the outliers on the parameters’ estimates. The performance of the proposed method is evaluated under both weak and strong autocorrelations and the results are compared to the ones obtained from classical estimator of ordinary least square. The results show that the proposed method performs well in which it removes the effect of outliers provides better results than the classical estimator under both weak and strong autocorrelations.

Keywords:

M-estimator; multistage process; profiles

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COI code: IIEC14_024

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Khedmati, Majid; Mohammad J avad Azizi & Seyed Taghi Akhavan Niaki, 2017, Phase I monitoring of simple linear profiles in multistage processes in the presence of outliers, 14th International Industrial Engineering Conference, تهران, انجمن مهندسي صنايع ايران - دانشگاه علم و صنعت ايران, https://www.civilica.com/Paper-IIEC14-IIEC14_024.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Khedmati, Majid; Mohammad J avad Azizi & Seyed Taghi Akhavan Niaki, 2017)
Second and more: (Khedmati; Azizi & Akhavan Niaki, 2017)
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The University/Research Center Information:
Type: state university
Paper No.: 12896
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