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The effects of population size and information update rates on the emergent patterns of cooperative clusters in a large-scale social particle swarm model

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Abstract

We study the impact of network size in the context of interactions within social network services (SNS) on cooperation among its users, as well as that of the speed of information update about other neighbors during interaction, using an enhanced version of a swarm model that uses prisoner’s dilemma as social interaction strategy and that models users’ interactions through kinematics. We focus on the speed of information update about social environments and study the relationships between the resulting patterns of cooperation in different information update rates. We observed the large variations among emerging many cooperative clusters in size, speed, and cooperation rate in the large population. Moreover, cooperation was more promoted when the information update rate was high, in contrast to low update rate where the population converged to a few large clusters with many wandering defectors.

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Acknowledgements

This work was supported in part by JSPS/MEXT KAKENHI, JP17H06383 in #4903, JP17KT0001 and Topic-Setting Program to Advance Cutting-Edge Humanities and Social Sciences Research JP17J0011b.

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Authors and Affiliations

  1. Graduate School of Informatics, Nagoya University, Nagoya, Japan

    Zineb Elhamer, Reiji Suzuki & Takaya Arita

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  1. Zineb Elhamer
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  2. Reiji Suzuki
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  3. Takaya Arita
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Correspondence to Zineb Elhamer.

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Elhamer, Z., Suzuki, R. & Arita, T. The effects of population size and information update rates on the emergent patterns of cooperative clusters in a large-scale social particle swarm model. Artif Life Robotics 25, 149–158 (2020). https://doi.org/10.1007/s10015-019-00558-6

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