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SUMMARY:A Class of Three-Level Designs for Definitive Screening in the Pre
 sence of Second-Order Effects - Jones\, B (JMP)
DTSTART:20110902T133000Z
DTEND:20110902T140000Z
UID:TALK32628@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Screening designs are attractive for assessing the relative im
 pact of a large number of factors on a response of interest. Experimenters
  often prefer quantitative factors with three levels over two-level factor
 s because having three levels allows for some assessment of curvature in t
 he factor-response relationship. Yet\, the most familiar screening designs
  limit each factor to only two levels. We propose a new class of designs t
 hat have three levels\, provide estimates of main effects that are unbiase
 d by any second-order effect\, require only one more than twice as many ru
 ns as there are factors\, and avoid confounding of any pair of second-orde
 r effects. Moreover\, for designs having six factors or more\, our designs
  allow for the estimation of the full quadratic model in any three factors
 . In this respect\, our designs may render follow-up experiments unnecessa
 ry in many situations\, thereby increasing the efficiency of the entire ex
 perimentation process. \n\n
LOCATION:Seminar Room 1\, Newton Institute
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