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Graphical methods for evaluating covering arrays
Author(s) -
Kim Youngil,
Jang DaeHeung,
AndersonCook Christine M.
Publication year - 2016
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.1857
Subject(s) - computer science , graphical model , data mining , degree (music) , statistical graphics , algorithm , artificial intelligence , graphics , computer graphics (images) , physics , acoustics
Covering arrays relax the condition of orthogonal arrays by only requiring that all combination of levels be covered but not requiring that the appearance of all combination of levels be balanced. This allows for a much larger number of factors to be simultaneously considered but at the cost of poorer estimation of the factor effects. To better understand patterns between sets of columns and evaluate the degree of coverage to compare and select between alternative arrays, we suggest several new graphical methods that show some of the patterns of coverage for different designs. These graphical methods for evaluating covering arrays are illustrated with some examples. Copyright © 2015 John Wiley & Sons, Ltd.