[IEEE Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) - Honolulu, HI, USA (1999.07.10-1999.07.15)] Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) - A new methodology of using design of experiments as a precursor to neural networks for material processing: extrusion die design