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 language | English (US) |
|---|---|
| Pages (from-to) | 383-388 |
| Number of pages | 6 |
| Journal | Statistics and Probability Letters |
| Volume | 50 |
| Issue number | 4 |
| State | Published - 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