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On finding mixed orthogonal arrays of strength 2 with many 2-level factors

✍ Scribed by Dean DeCock; John Stufken

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 69 KB
Volume: 50
Category: Article
ISSN: 0167-7152
DOI: 10.1016/s0167-7152(00)00125-5

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✦ Synopsis

We describe a method for ÿnding mixed orthogonal arrays of strength 2 with a large number of 2-level factors. The method starts with an orthogonal array of strength 2, possibly tight, that contains mostly 2-level factors. By a computer search of this starting array, we attempt to ÿnd as large a number of 2-level factors as possible that can be used in a new orthogonal array of strength 2 containing one additional factor at more than two levels. The method produces new orthogonal arrays for some parameters, and matches the best-known arrays for others. It is especially useful for ÿnding arrays with one or two factors at more than two levels.

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