From: Warren Kuhfeld Subject: 3 4 2^13 in 24 runs Date: Fri, 19 Apr 2002 10:00:42 -0400 Neil, Here is design 3 4 2^13 in 24 runs. It was a bit of a struggle to generate. My usual method of looking for 3 two-level factors to replace with a 4 (in 3 2^16) did not work since there is not a 2 that is the perfect interaction of two other 2's. While I still have a long ways to go, my new software can generate most of the designs in Table 12.7 of Hedayat, Sloane, and Stufken, and a lot of other designs too. Warren 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 1 0 1 0 1 1 0 2 0 1 0 1 0 0 1 1 1 0 1 0 0 0 2 0 0 1 0 1 0 0 1 1 1 1 1 1 1 1 0 1 1 1 0 0 0 0 1 1 0 0 1 1 2 0 1 0 1 1 1 0 0 0 1 0 1 0 1 3 0 1 1 0 1 0 1 0 0 0 1 0 0 1 3 0 0 1 1 0 1 0 1 0 0 1 1 1 2 0 0 0 1 1 1 1 1 0 1 0 0 0 1 2 1 0 0 0 1 1 0 1 1 0 1 0 1 0 2 1 0 1 0 0 1 1 0 1 1 0 1 0 1 2 3 0 0 0 0 0 1 1 0 1 1 1 1 0 0 3 1 1 1 1 1 1 1 1 1 1 0 0 0 0 3 1 0 0 1 1 0 0 0 1 0 0 1 1 0 1 1 0 1 0 1 1 0 0 0 1 1 0 0 0 1 1 1 0 1 0 1 1 0 0 0 1 1 1 1 2 1 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 1 0 0 0 1 1 1 0 0 1 0 1 0 1 0 0 1 0 1 0 1 1 1 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 1 1 1 2 3 1 1 0 0 0 0 0 1 0 1 0 0 1 2 2 1 1 1 0 0 1 0 0 1 0 0 1 0 2 2 1 0 1 1 0 0 1 0 0 1 1 0 1 2 0 1 1 1 1 1 0 0 1 0 0 1 1 0 Warren F. Kuhfeld SAS Institute Inc. (919) 677-8000 x17922 Multivariate Models R&D Cary, NC 27513-2414 (919) 677-4444 (Fax) R5116 SAS Campus Dr. www.sas.com SAS ... The Power to Know Opinions expressed here are mine and not necessarily those of SAS. Marketing Research, Discrete Choice, Conjoint, Experimental Design, and Graphics Reports TS-650A through TS-650I can be obtained from: http://www.sas.com/service/techsup/tnote/tnote_stat.html