OPTIMISM BRINGS ACCURATE PERCEPTION IN ITERATED PRISONER’S DILEMMA

Orhun Gorkem and Haluk O. Bingol ()
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Orhun Gorkem: Computer Engineering, Bogazici University, Istanbul 34470, Turkey
Haluk O. Bingol: Computer Engineering, Bogazici University, Istanbul 34470, Turkey

Advances in Complex Systems (ACS), 2022, vol. 25, issue 01, 1-17

Abstract: We analyze an extended model of the Iterated Prisoner’s Dilemma where agents decide to play based on the data from their limited memory or recommendations. The cooperators can decide whether to play with the matched opponent or not. The agents’ decisions are directly linked to their level of optimism since they decide to play if they believe the opponent has a high probability of cooperating. Optimism is precisely tuned by parameters optimism threshold and tolerance. Our experiment showed that being optimistic isbetter for cooperators as it leads to more accurate exploration in the multi-agent system, which tolerates the vulnerability against defectors.

Keywords: Complex networks; iterated prisoner’s dilemma; tolerance; optimism; multi-agent systems; misjudgment; exploration (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0219525921500156

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