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ROAD algorithm for control charts / Gejza Dohnal

In statistical process control, procedures are applied that require relatively strict conditions for their use. If such assumptions are violated, these methods become inefficient, leading to increased incidence of false signals. Therefore, a robust version of control charts is sought to be less sens...

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Main Author: Dohnal, Gejza
Format: Conference or Workshop Item
Language:English
Published: 2015
Subjects:
T Technology (General)
Information technology. Information systems
Online Access:https://ir.uitm.edu.my/id/eprint/54091/1/54091.pdf
https://ir.uitm.edu.my/id/eprint/54091/
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spelling my.uitm.ir.540912023-02-22T07:29:23Z https://ir.uitm.edu.my/id/eprint/54091/ ROAD algorithm for control charts / Gejza Dohnal Dohnal, Gejza T Technology (General) Information technology. Information systems In statistical process control, procedures are applied that require relatively strict conditions for their use. If such assumptions are violated, these methods become inefficient, leading to increased incidence of false signals. Therefore, a robust version of control charts is sought to be less sensitive with respect to a breach of normality and independence in measurements. Robust control charts, however, usually increase the delay in the detection of assignable causes. This negative effect can, to some extent, be removed with the aid of an adaptive approach. We introduce a new adaptive version of the zone chart: The decision rule is based on exceeding the lower or upper control limits (LCL, UCL), the same as in the Shewhart-type chart. These limits will be changed adaptively in each inspection time in dependence on current state of monitored process. The algorithm can be applied to a variety of classical control charts. Using with robust control chart we obtain a robust adaptive control chart (ROAD). The comparison between different types of control charts using the RARLC index on the contaminated data clearly shows that, in the case of contaminated data, the improved ROAD is the best choice. 2015-11-04 Conference or Workshop Item PeerReviewed text en https://ir.uitm.edu.my/id/eprint/54091/1/54091.pdf ROAD algorithm for control charts / Gejza Dohnal. (2015) In: International Conference on Computing, Mathematics and Statistics (iCMS2015), 4-5 November 2015, Langkawi Lagoon Resort Langkawi Island, Kedah Malaysia. (Submitted)
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic T Technology (General)
Information technology. Information systems
spellingShingle T Technology (General)
Information technology. Information systems
Dohnal, Gejza
ROAD algorithm for control charts / Gejza Dohnal
description In statistical process control, procedures are applied that require relatively strict conditions for their use. If such assumptions are violated, these methods become inefficient, leading to increased incidence of false signals. Therefore, a robust version of control charts is sought to be less sensitive with respect to a breach of normality and independence in measurements. Robust control charts, however, usually increase the delay in the detection of assignable causes. This negative effect can, to some extent, be removed with the aid of an adaptive approach. We introduce a new adaptive version of the zone chart: The decision rule is based on exceeding the lower or upper control limits (LCL, UCL), the same as in the Shewhart-type chart. These limits will be changed adaptively in each inspection time in dependence on current state of monitored process. The algorithm can be applied to a variety of classical control charts. Using with robust control chart we obtain a robust adaptive control chart (ROAD). The comparison between different types of control charts using the RARLC index on the contaminated data clearly shows that, in the case of contaminated data, the improved ROAD is the best choice.
format Conference or Workshop Item
author Dohnal, Gejza
author_facet Dohnal, Gejza
author_sort Dohnal, Gejza
title ROAD algorithm for control charts / Gejza Dohnal
title_short ROAD algorithm for control charts / Gejza Dohnal
title_full ROAD algorithm for control charts / Gejza Dohnal
title_fullStr ROAD algorithm for control charts / Gejza Dohnal
title_full_unstemmed ROAD algorithm for control charts / Gejza Dohnal
title_sort road algorithm for control charts / gejza dohnal
publishDate 2015
url https://ir.uitm.edu.my/id/eprint/54091/1/54091.pdf
https://ir.uitm.edu.my/id/eprint/54091/
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score 13.211869

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