Proceedings of the 1995 Winter Simulation Conference ed. C. Alexopoulos, K. Kang, W. R. Lilegdon, and D. Goldsman

Serial Algodthmx ~zir~iiei AI~~~~u~~. (Ch.Y) SimPack Tookit (Ch IO) SIMULATION MODEL DESIGN ABSTRACT In this state of the art talk, we will present a structure for defining and categorizing simulation model de- signs. In the past, simulation researchers have created categories for discrete event simulation: event, pro- cess and activity; however, there are problems with this breakdown. First, the major problem is that the taxonomy based on these three sub-types deals with only discrete event methods. Discrete time methods including a spatial decomposition of a physical system (cellular automata, L-Systems) or a continuous model are not included. Second, the terms "event," "pro- cess" and "activity" create a division among classes of simulation languages, rather than a division based on model design. The term "process," for example, is really a level of abstraction higher than "event" and is not orthogonal to "event." The structure that we present in this talk is more comprehensive and pro- vides simulationists with a unified framework that is independent of the terms discrete and continuous.