Diagrammatic representations of the conceptual simulation model for discrete event systems

Diagrammatic modelling representation methods in discrete event simulation are varied and can be classified as follows: simulation strategy neutral, simulation strategy oriented, simulation language oriented, and methods borrowed from other computer modelling areas. The main diagrammatic methods are described in some detail (augmented Petri nets, activity cycle diagrams, event graphs and GPSS block diagrams) and demonstrated by an example. The advantages and disadvantages of these representation methods are briefly discussed.