Research on co-evolution solving principle of complex problems

In view of the characteristics of complex systems and the complexity classification of problem objects, this paper first depicts the general solving process of complex problems and makes a formal description. Then it elaborates the basic principle of co-evolution solving between problem space, operator space and solution space, and simplifies the corresponding process into “problem space - solution space co-evolution”, “operator space - solution space co-evolution” and “problem space - operator space co-evolution”, according to the characteristics of specific problem. Finally, it discusses the concrete realization of the above three forms based on practical research cases. This paper aims to provide a new evolutionary solving method for complex problems, which provides guidance in methodological sense.