Randomness Effect on Cooperation in Memory-Based Snowdrift Game |
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Authors: | ZHANG Ming-Feng WANG Bing-Hong WANG Wen-Xu TANG Chuan-Long YANG Rui |
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Institution: | Department of Modern Physics, University of Science and Technology of China, Hefei 230026Department of Electronic Engineering, City University of Hong Kong, Hong Kong |
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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-neighbourregular 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 arefound in the parameter planes. The strategy-related average degrees of individuals are helpful to understand the obtained results. |
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Keywords: | 87 23 Kg 02 50 Le 87 23 Ge 89 65 -s 89 75 Fb |
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