| Original Articles |
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Randomness Effect on Cooperation in Memory-Based Snowdrift Game |
| ZHANG Ming-Feng1;WANG Bing-Hong1;WANG Wen-Xu2;TANG Chuan-Long1;YANG Rui1 |
| 1Department of Modern Physics, University of Science and Technology of China, Hefei 2300262Department of Electronic Engineering, City University of Hong Kong, Hong Kong |
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ZHANG Ming-Feng, WANG Bing-Hong, WANG Wen-Xu et al 2008 Chin. Phys. Lett. 25 1494-1497 |
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Abstract A memory-based snowdrift game (MBSG) on spatial small-world networks is investigated. It is found that cooperation rate versus temptation shows some step structures on small-world networks, similar to the case on regular lattices. With the increment of rewiring probability based on four-neighbour
regular lattices, more steps are observable. Interestingly, it is observed that cooperation rate peaks at a specific value of temptation, which indicates that properly encouraging selfish actions may lead to better cooperative behaviours in the MBSG on small-world networks. Memory effects are also discussed for different rewiring probabilities. Furthermore, optimal regions are
found in the parameter planes. The strategy-related average degrees of individuals are helpful to understand the obtained results.
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87.23.Kg
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Received: 13 December 2007
Published: 31 March 2008
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| PACS: |
87.23.Kg
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(Dynamics of evolution)
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02.50.Le
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(Decision theory and game theory)
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87.23.Ge
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(Dynamics of social systems)
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89.65.-s
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(Social and economic systems)
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89.75.Fb
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(Structures and organization in complex systems)
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