We conduct a market experiment with human agents in order to explore thestructure of transaction networks and to study the dynamics of wealthaccumulation. The experiment is carried out on our platform for 97 days with2,095 effective participants and 16,936 times of transactions. From these data,the hybrid distribution (log-normal bulk and power-law tail) in the wealth isobserved and we demonstrate that the transaction networks in our market arealways scale-free and disassortative even for those with the size of the orderof few hundred. We further discover that the individual wealth is correlatedwith its degree by a power-law function which allows us to relate the exponentof the transaction network degree distribution to the Pareto index in wealthdistribution.
展开▼
