A0419
Title: Constructing $E(s^2)$-optimal two-level supersaturated designs via orthogonal arrays
Authors: Emmanouil Androulakis - University of Piraeus (Greece) [presenting]
Haralambos Evangelaras - University of Piraeus / University of Piraeus Research Center (Greece)
Kashinath Chatterjee - Augusta University (United States)
Abstract: The purpose is to investigate $E(s^2)$-optimality of two-level supersaturated designs, which are constructed by augmenting an orthogonal array with two-column interaction terms. By revisiting Wu's construction method, it is shown that $E(s^2)$-optimal supersaturated designs can be obtained when the starting design is a two-level orthogonal array with n runs and n-1, n-2, or n-3 columns, as long as its two-column interactions are partially aliased. Results rely on the framework of the generalized wordlength pattern and its connection to the concept of J-characteristics, offering new insights into the structure and performance of supersaturated designs derived from orthogonal arrays.
