摘要

General minimum lower order confounding (CMC) is a newly proposed design criterion that aims at keeping the lower order effects unaliased with one another to the extent possible. This paper shows that for 5N/16 < n <= N/2, 9N/32 < n <= 5N/16, and 17N/64 < 71 <= 9N/32, all GMC designs with N runs and n two-level factors are projections of maximal designs with N/2, 5N/16, and 9N/32 factors, respectively. Furthermore, it provides immediate approaches to constructing these CIVIC designs from the respective maximal designs; these approaches can produce many more GMC designs than the existing computer search method.