Source Code of Itao, K., Kaneko, K.
We build a simple model of social networks which grow by the gift interactions of nodes. With evolutionary simulation, various social organizations, including bands, tribes, and chiefdoms, emerge depending on the frequency of gift.
See gift.py for details.
We also conducted empirical data analysis using the ethnographic database, Standard Cross-Cultural Sample. See gift_SCCS_stat.py for details.