Projective three-level main effects designs robust to model uncertainty

Pi Wen Tsai*, Steven G. Gilmour, Roger Mead

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


This paper is concerned with designing experiments under the assumption that an analysis strategy is used that considers interactions in addition to main effects. A criterion which averages an approximation to As-efficiency over lower-dimensional projections of the design is introduced to compare designs. A columnwise design procedure is used to construct three-level designs for six factors in 18 runs. The projection efficiencies of these designs are explored and compared with designs obtained from the L18 orthogonal array. Results are also given for designs with 14 and 17 runs.

Original languageEnglish
Pages (from-to)467-475
Number of pages9
Issue number2
Publication statusPublished - 2000
Externally publishedYes


  • Fractional factorial design
  • Response surface methodology
  • Screening experiment
  • Taguchi methods

ASJC Scopus subject areas

  • Statistics and Probability
  • General Mathematics
  • Agricultural and Biological Sciences (miscellaneous)
  • General Agricultural and Biological Sciences
  • Statistics, Probability and Uncertainty
  • Applied Mathematics


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