BioND — Dynamics of Biological Networks

Patterns of cooperation: fairness and coordination in self-organized networks of interacting agents

Anne-Ly Do, Lars Rudolf, and Thilo Gross
New Journal of Physics 12, 063023-19, 2010.


Evolved network

We study the self-assembly of a complex network of collaborations among self-interested agents. The agents can maintain different levels of cooperation with different partners. Further, they continuously, selectively, and independently adapt the amount of resources allocated to each of their collaborations in order to maximize the obtained payoff. We show analytically that the system approaches a state in which the agents make identical investments, and links produce identical benefits. Despite this high degree of social coordination some agents manage to secure privileged topological positions in the network enabling them to extract high payoffs. Our analytical investigations provide a rationale for the emergence of unidirectional nonreciprocal collaborations and different responses to the withdrawal of a partner from an interaction that have been reported in the psychological literature.

Media Coverage

Sabiene Sütterlin, Science Blogs, 2010-08-26
Seit ich mit der Netzwerk-Gruppe zu tun habe, sehe ich überall Netzwerke. Die Leser dieses Blogs sind teilweise untereinander vernetzt, zum Beispiel. Und die Nervenzellen in unseren Gehirnen knüpfen stets neue Verbindungen

Jan Lublinski, German Public Radio (Deutschlandfunk), 2009-09-10
Netzwerke sind allgegenwärtig, sowohl in der Natur als auch in der menschlichen Gesellschaft. Aber es gibt nur sehr wenige mathematische Methoden, mit denen man Veränderungen in Netzwerken beschreiben kann. Eine Dresdner Wissenschaftlerin geht hier neue Wege
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