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

Dean Decock, John Stufken

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

We describe a method for finding 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 find 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 finding arrays with one or two factors at more than two levels.

Original languageEnglish (US)
Pages (from-to)383-388
Number of pages6
JournalStatistics and Probability Letters
Volume50
Issue number4
StatePublished - Dec 1 2000

Keywords

  • Asymmetrical orthogonal array
  • Hadamard design
  • Hadamard matrix
  • Plackett-Burman design
  • Search algorithm

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty

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