**Date & Time:** Tuesday, October 22, 2013, 15:00-16:00.

**Venue:** Ramanujan Hall

**Title:** Optimal fractional factorial designs and their construction

**Speaker:** Chung-yi Suen, Cleveland State University

**Abstract:** Optimal symmetrical fractional factorial designs with n runs and m
factors of s levels each are constructed. We consider only designs such that no
two factors are aliases. The minimum moment aberration criterion proposed by Xu
(2003) is used to judge the optimality of the designs. The minimum moment
aberration criterion is equivalent to the popular generalized minimum aberration
criterion proposed by Xu and Wu (2001), but the minimum moment criterion is
simpler to formulate and employ computationally. Some optimal designs are
constructed by using generalized Hadamard matrices.