1.Fachbereich Statistik, Universit?t Dortmund, D44221 Dortmund, Germany,DE;2.Department of Probability and Statistics, University of Sheffield, Sheffield S3 7RH, UK (r.j.martin@sheffield.ac.uk),GB
Abstract:
We consider two related models for interference: one having different directional neighbour effects and one with the same neighbour effects. We show that optimal designs for one model can be obtained from optimal designs for the other model. Acknowledgement. We are grateful to H. Kushner for advance notice of his work. SP was supported by the Isfahan University of Technology, Iran.