Evolution of Cooperation through Power Law Distributed Conflicts

At an individual level, cooperation can be seen as a behaviour that uses personal resource to support others or the groups which one belongs to. In a conflict between two individuals, a selfish person gains an advantage over a cooperative opponent, while in a group-group conflict the group with more...

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Main Author: Pilwon Kim
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Complexity
Online Access:http://dx.doi.org/10.1155/2017/9271651
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author Pilwon Kim
author_facet Pilwon Kim
author_sort Pilwon Kim
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description At an individual level, cooperation can be seen as a behaviour that uses personal resource to support others or the groups which one belongs to. In a conflict between two individuals, a selfish person gains an advantage over a cooperative opponent, while in a group-group conflict the group with more cooperators wins. In this work, we develop a population model with continual conflicts at various scales and show cooperation can be sustained even when interpersonal conflicts dominate, as long as the conflict size follows a power law. The power law assumption has been met in several observations from real-world conflicts. Specifically if the population is structured on a scale-free network, both the power law distribution of conflicts and the survival of cooperation can be naturally induced without assuming a homogeneous population or frequent relocation of members. On the scale-free network, even when most people become selfish from continual person-person conflicts, people on the hubs tend to remain unselfish and play a role as “repositories” of cooperation.
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spelling doaj-art-ced9e0adca76402199e815edec118a4a2025-08-20T03:23:43ZengWileyComplexity1076-27871099-05262017-01-01201710.1155/2017/92716519271651Evolution of Cooperation through Power Law Distributed ConflictsPilwon Kim0Ulsan National Institute of Science and Technology (UNIST), Department of Mathematical Sciences, Ulsan Metropolitan City 689-798, Republic of KoreaAt an individual level, cooperation can be seen as a behaviour that uses personal resource to support others or the groups which one belongs to. In a conflict between two individuals, a selfish person gains an advantage over a cooperative opponent, while in a group-group conflict the group with more cooperators wins. In this work, we develop a population model with continual conflicts at various scales and show cooperation can be sustained even when interpersonal conflicts dominate, as long as the conflict size follows a power law. The power law assumption has been met in several observations from real-world conflicts. Specifically if the population is structured on a scale-free network, both the power law distribution of conflicts and the survival of cooperation can be naturally induced without assuming a homogeneous population or frequent relocation of members. On the scale-free network, even when most people become selfish from continual person-person conflicts, people on the hubs tend to remain unselfish and play a role as “repositories” of cooperation.http://dx.doi.org/10.1155/2017/9271651
spellingShingle Pilwon Kim
Evolution of Cooperation through Power Law Distributed Conflicts
Complexity
title Evolution of Cooperation through Power Law Distributed Conflicts
title_full Evolution of Cooperation through Power Law Distributed Conflicts
title_fullStr Evolution of Cooperation through Power Law Distributed Conflicts
title_full_unstemmed Evolution of Cooperation through Power Law Distributed Conflicts
title_short Evolution of Cooperation through Power Law Distributed Conflicts
title_sort evolution of cooperation through power law distributed conflicts
url http://dx.doi.org/10.1155/2017/9271651
work_keys_str_mv AT pilwonkim evolutionofcooperationthroughpowerlawdistributedconflicts