Volume 92, Number 4, November 2010
|Number of page(s)
|06 December 2010
Enhance cooperation by catastrophic collapses of rich cooperators in coevolutionary networks
Department of Physics, Beijing Normal University, Beijing 100875, China
2 College of Safety and Environment Engineering, Capital University of Economics and Business Beijing 100070, China
Accepted: 3 November 2010
In social systems there is an interesting phenomenon that the social efficiency can often increase after successive collapses. Few papers have addressed this strange feature based on social networks. We use the coevolutionary small-world network under the prisoner's dilemma game as a simple social model, and produce social-structure collapses with avalanches by attacking the best cooperator hubs. We find an unexpected outcome that the mutation of the richest cooperators can actually promote cooperation on the large scale. We attribute this interesting phenomenon to the ability of the individuals to adjust their social relations. The mechanism is that the attacks drive the groups of defectors, motivated by their selfishness, to generate strong enough interconnectedness with groups of cooperators and to enhance the cooperation through group selection.
PACS: 02.50.Le – Decision theory and game theory / 87.23.Cc – Population dynamics and ecological pattern formation / 89.65.-s – Social and economic systems
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.