Evolutionary Properties of Collective Decisions

In this research, we investigate the collective decision and analyze its emergent properties. We especially provide the evolutionary explanations of the collective decision motivated by the works of the theory of complex systems. A complex system, as a collective designation for large-scale and complex nonlinear systems, is defined as the group of a large number of self-interested agents. The collective behavior that emerged from the local and purposive interactions with self-interested agents is investigated as complex systems. We model the decision-making problems of agents with selfish-motivations. We classify rational decisions of agents into several categories according to their personal attributes. We also provide models for describing and analyzing collective behavior in the long run, and show the complex and interesting collective behavior which emerges through the interactions with agents with heterogeneous micromotives