Research on determination method of model granularity in complex system simulation

The determination method of model granularity is a main problem in complex system simulation .Firstly, a formalized describing method of simulation model is given on the base of analyzing the characteristic of complex system. Then the concepts of attainability, feasibility, logic accuracy, experimental framework of the model are introduced, and the formalization definition of model validity and simulation granularity are given. Finally, rules of determining the simulation granularity are proposed.