@inproceedings{oai:barrel.repo.nii.ac.jp:00004804,
 author = {Namekata, Tsuneyuki and Namekata, Yoko},
 month = {Oct},
 note = {2014 IEEE International Conference on Systems, Man, and Cyberneticsで発表されたもののAccepted versionに修正を加えたもの, We consider the effect of tags and their reputation on the emergence of cooperation in demographic Donor- Recipient game. Players are initially randomly distributed in square lattice of cells. In each period, players move locally to random cell in neighbors or globally to random unoccupied cell in the whole lattice, and play multiple games against local neighbors or against randomly selected global players. We restrict patterns of move (play) to local or global; local (global) means with high probability the player moves (plays) locally (globally). If wealth (accumulated payoff) of player becomes negative or his age becomes greater than his lifetime, he dies. If his wealth becomes greater than some amount and there is unoccupied cell in neighbors, he has an offspring. In Donor- Recipient game, one player is selected at random as Donor and the other as Recipient. Donor has two moves Cooperate or Defect; Cooperate means Donor pays cost for Recipient to receive benefit. Defect means Donor does nothing. In this paper, we introduce tags and communication about tags. A player can be distinguished by his inheriting tag. Donor decides his move depending on Recipient's tag. Before Donor's move Recipient can communicate his experienced objective information such as this tag is cooperative and another tag is not cooperative to Donor. Donor holds this information from Recipients as hearsay reputation about tags and uses the reputation to adjust his strategy. We show, by Agent-Based Simulation, that introducing tags promotes the emergence of cooperation and reputation about tags also promotes the emergence of cooperation if the number of different tags is small., 2014 IEEE International Conference on Systems, Man, and Cybernetics, San Diego, October 5-8 ,2014},
 pages = {1--6},
 title = {Tags and Their Reputation in Demographic Donor-Recipient Game},
 year = {2014}
}