全球智库信息集成服务系统(G2TT): Risk-driven migration and the collective-risk social dilemma.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1103/PhysRevE.86.036101
	Risk-driven migration and the collective-risk social dilemma.
	Chen X; Szolnoki A; Perc M
发表日期	2012
出处	Physical Review E 86 (3)
出版年	2012
语种	英语
摘要	A collective-risk social dilemma implies that personal endowments will be lost if contributions to the common pool within a group are too small. Failure to reach the collective target thus has dire consequences for all group members, independently of their strategies. Wanting to move away from unfavorable locations is therefore anything but surprising. Inspired by these observations, we here propose and study a collective-risk social dilemma where players are allowed to move if the collective failure becomes too probable. More precisely, this so-called risk-driven migration is launched depending on the difference between the actual contributions and the declared target. Mobility therefore becomes an inherent property that is utilized in an entirely self-organizing manner. We show that under these assumptions cooperation is promoted much more effectively than under the action of manually determined migration rates. For the latter, we in fact identify parameter regions where the evolution of cooperation is greatly inhibited. Moreover, we find unexpected spatial patterns where cooperators that do not form compact clusters outperform those that do, and where defectors are able to utilize strikingly different ways of invasion. The presented results support the recently revealed importance of percolation for the successful evolution of public cooperation, while at the same time revealing surprisingly simple methods of self-organization towards socially desirable states.
主题	Evolution and Ecology (EEP) ; Postdoctoral Scholars (PDS)
关键词	Evolution of cooperation Group members Migration rates Parameter regions Self organizing SIMPLE method Social dilemmas Spatial patterns
URL	http://pure.iiasa.ac.at/id/eprint/9869/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/129477
推荐引用方式 GB/T 7714	Chen X,Szolnoki A,Perc M. Risk-driven migration and the collective-risk social dilemma.. 2012.