Abstract
Bala and Goyal (2000) showed that a center-sponsored star network is the strict Nash equilibrium in two-flow model, a mathematical model of network formation. However, the result of the laboratory experiments conducted by Falk and Kosfeld (2003) was different from analytical prediction. In the experiments, some Nash equilibrium networks were formed but any strict Nash equilibrium network was not formed. Additionally, Nash equilibrium networks were not stable. This study makes a hypothesis such that the decision making of a human subject is not always rational, but he/she makes a decision based on several information about the situation through trial and error. Based on the hypothesis, we conduct a simulation system using ZCS (Zeroth-level Classifier System), extract some behavioral rules, and analyze the behavior of the subjects.
