Uniformity pattern and related criteria for mixed-level designs
ABSTRACT The objective of this article is to study the issue of projection uniformity along the line of Fang and Qin (2005) and Qin, Wang and Chatterjee (2012) based on discrete discrepancy for mixed-level designs . This has wide application to the field of fractional factorials. We also identify connections between minimum projection uniformity criterion and other optimality criteria such as orthogonality and generalized minimum abberation. Additionally, a strict lower bound to projection discrepancy for mixed-level designs is presented.