# Seminar at SMU Delhi

September 14, 2011 (Wednesday) , 3:30 PM at Webinar
Speaker: Basudev Kole, Indian Agricultural Statistics Research Institute, New Delhi
Title: Addition of runs to a supersaturated design
Abstract of Talk
The purpose of this presentation is to introduce a new class of extended $E(s^2)$-optimal two-level supersaturated designs obtained by adding runs to an existing $E(s^2)$-optimal two level supersaturated design. The extended design is a union of two optimal SSDs belonging to different classes. New lower bound to $E(s^2)$ has been obtained for the extended supersaturated designs. This idea has been further extended to obtain multi-level supersaturated designs. Extended $E(\chi^2)$-optimal multi-level supersaturated design has been obtained by adding runs to an existing $E(\chi^2)$-optimal multi-level supersaturated design. The extended design is again a union of two $E(\chi^2)$-optimal multi-level supersaturated designs belonging to different classes. A lower bound to $E(\chi^2)$ has been obtained for the extended supersaturated designs. Some examples and a small catalogue of both $E(s^2)$-optimal and $E(\chi^2)$-optimal extended supersaturated designs has been prepared. These designs are available at www.iasri.res.in/design/.