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arXiv · 0708.1908

Complete enumeration of two-Level orthogonal arrays of strength $d$ with $d+2$ constraints

John Stufken·Boxin Tang
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Abstract

Enumerating nonisomorphic orthogonal arrays is an important, yet very difficult, problem. Although orthogonal arrays with a specified set of parameters have been enumerated in a number of cases, general results are extremely rare. In this paper, we provide a complete solution to enumerating nonisomorphic two-level orthogonal arrays of strength $d$ with $d+2$ constraints for any $d$ and any run size $n=\lambda2^d$. Our results not only give the number of nonisomorphic orthogonal arrays for given $d$ and $n$, but also provide a systematic way of explicitly constructing these arrays. Our approach to the problem is to make use of the recently developed theory of $J$-characteristics for fractional factorial designs. Besides the general theoretical results, the paper presents some results from applications of the theory to orthogonal arrays of strength two, three and four.

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John Stufken, Boxin Tang. 2007-08-14. Complete enumeration of two-Level orthogonal arrays of strength $d$ with $d+2$ constraints. https://doi.org/10.1214/009053606000001325

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