A note on the selection of optimal foldover plans for 16- and 32-run fractional factorial designs |
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Authors: | Bo Wang Robert G McLeod John F Brewster |
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Institution: | 1. NCI Insurance Company, Beijing 100073, China;2. Department of Mathematics and Statistics, University of Winnipeg, Winnipeg, MB, Canada R3B 2E9;3. University of Manitoba, Winnipeg, MB, Canada R3T 2N2 |
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Abstract: | The minimum aberration criterion has been advocated for ranking foldovers of 2k−p fractional factorial designs (Li and Lin, 2003); however, a minimum aberration design may not maximize the number of clear low-order effects. We propose using foldover plans that sequentially maximize the number of clear low-order effects in the combined (initial plus foldover) design and investigate the extent to which these foldover plans differ from those that are optimal under the minimum aberration criterion. A small catalog is provided to summarize the results. |
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Keywords: | Clear effects Combined design Minimum aberration |
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