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Evolution of cooperation on spatially embedded networks
Pierre Buesser1, Marco Tomassini
1Information Systems Institute, HEC, University of Lausanne, Switzerland. pierre.buesser@unil.ch
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 2, 2013
Summary
Hierarchical networks like Apollonian and grid-based structures significantly boost cooperation in evolutionary games. These network designs enhance cooperation more than random or scale-free networks in 2D spaces.
Area of Science:
- Evolutionary Game Theory
- Network Science
- Computational Social Science
Background:
- Evolutionary game theory models strategic interactions.
- Network structures influence cooperation dynamics.
- Spatial embedding affects agent interactions.
Purpose of the Study:
- Investigate cooperation evolution in 2D spatial networks.
- Analyze effects of diverse network topologies and degree distributions.
- Identify network structures conducive to cooperation.
Main Methods:
- Simulated classical two-person, two-strategy evolutionary games.
- Employed imitative microscopic dynamics.
- Examined regular, random, and scale-free network topologies.
Main Results:
- Hierarchical networks (Apollonian, grid-based) strongly promote cooperation.
- Spatial scale-free networks also enhance cooperation, but less so.
- Cooperation is higher on these networks compared to random geometric graphs and regular grids.
Conclusions:
- Network topology critically influences cooperation levels in spatial evolutionary games.
- Hierarchical and inhomogeneous networks are optimal for fostering cooperation.
- Findings inform the design of interaction structures for promoting cooperation in physical spaces.
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