Quantifying Interest Partitioning in a Distributed Model David R. Pratt Department of Computer Science Naval Postgraduate School Monterey, California, U. S. A. As the large scale modeling and simulation community transitions from monolithic models towards distributed models, there is an accompanying need for a shift in the processing model used by model developers and exercise designers. Interest management and data distribution management schemes have the potential to reduce computer processing and networking load enhancing the flexibility and scalability of models. This presentation discusses the tradeoffs involved in implementing these schemes and provides an empirical treatment of the computational aspects of interest partitioning, a precursor to effectively using interest management and data distribution management schemes among distributed systems. Dr. Pratt is an Associate Professor of Computer Science at the Naval Postgraduate School. He joined this department full time in 1993. His research interests encompass all areas need to support virtual worlds research, e.g. computer graphics, real-time programming, 3D simulation systems, virtual worlds systems, autonomous agent simulation and development, user interfaces, parallel processing operating systems, and terrain databases. Since 1996 he has been the Technical Director, Joint Simulation Systems (JSIMS) Joint Project Office (JPO), Orlando Florida.