Modeling and Simulation of Complex Systems

Modelling and simulation play a fundamental role in the design and representation phase of systems, particularly complex systems. These approaches make it possible to generate a formal or material prototype that is faithful to the specifications of the real system or some of its components. This prototype, subjected to a set of inputs, produces observable outputs, the analysis of which allows conclusions to be drawn that can be transposed to the real system. The modelling of complex systems is mainly based on a strategy of breaking them down into subsystems that are easier to analyse. This breakdown requires a rigorous method of identifying and defining the structures, actions and interactions governing each subsystem. The overall behaviour of the system generally emerges from the dynamic combination of the behaviours of its modelled sub-parts.Numerous studies and implementations have been carried out on this subject, reflecting the growing interest in the simulation of complex systems and their progressive formalisation through diverse and increasingly powerful methods.