Rotation designs: orthogonal first‐order designs with higher order projectivity

Dizza Bursztyn and David M. Steinberg

Applied Stochastic Models in Business and Industry, 2002, vol. 18, issue 3, 197-206

Abstract: In many factorial experiments, just a few of the experimental factors account for most of the variation in the response, a situation known as factor sparsity. Accurate modelling of the factor–response relationship may require use of higher‐order terms in the active factors. In such settings, it may be desirable to use a design that is able, simultaneously, to screen out the important factors and to fit higher‐order models in those factors. We derive a useful class of designs by rotating standard two‐level fractional factorials. A special class of rotations is developed that has some appealing symmetry properties and can accommodate more factors than the rotation designs in Bursztyn and Steinberg (J. Stat. Plann. Inference 2001;97:399). A comparison of designs based on their projection properties and alias matrices shows that the new designs are better than many other alternatives. Copyright © 2002 John Wiley & Sons, Ltd.

Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:wly:apsmbi:v:18:y:2002:i:3:p:197-206

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