题 目: E(s^2)-optimal supersaturated designs for 2-level factors 主讲人:Professor Kashinath Chatterjee Department of Statistics, Visva-Bharati University, India 时 间: 95年10月27日（星期五）10：40 - 11：30 （上午10：20-10：40茶会於统计所821室举行） 地 点: 清大综合三馆837室 Abstract Booth and Cox (1962) pioneered the notion of E(s^2) criterion for constructing two- level supersaturated designs. Nguyen (1996) and Tang and Wu (1997) independently obtained a lower bound for E(s^2). This lower bound can be achieved only when m is a multiple of (n – 1) where m is the number of factors and n is the number of runs. Bulutoglu and Cheng (2004) described a method that uses difference families to construct designs that satisfy this lower bound. They also derived better lower bounds for the case where the Nguyen, Tang-Wu bound is not achievable. Their bounds cover more cases than a bound obtained by Butler, Mead, Eskridge and Gilmour (2001). The purpose of the present talk is to give the notion of supersaturated design and also to give the flavor of E(s^2) optimality and the corresponding bounds for 2-level factors. --

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