Loss aversion fosters coordination among independent reinforcement learners

• URL: http://arxiv.org/abs/1912.12633v1
• Date: Sun, 29 Dec 2019 11:22:30 GMT
• Title: Loss aversion fosters coordination among independent reinforcement learners
• Authors: Marco Jerome Gasparrini, Mart\'i S\'anchez-Fibla
• Abstract summary: We study what are the factors that can accelerate the emergence of collaborative behaviours among independent selfish learning agents. We model two versions of the game with independent reinforcement learning agents. We prove experimentally the introduction of loss aversion fosters cooperation by accelerating its appearance.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We study what are the factors that can accelerate the emergence of collaborative behaviours among independent selfish learning agents. We depart from the "Battle of the Exes" (BoE), a spatial repeated game from which human behavioral data has been obtained (by Hawkings and Goldstone, 2016) that we find interesting because it considers two cases: a classic game theory version, called ballistic, in which agents can only make one action/decision (equivalent to the Battle of the Sexes) and a spatial version, called dynamic, in which agents can change decision (a spatial continuous version). We model both versions of the game with independent reinforcement learning agents and we manipulate the reward function transforming it into an utility introducing "loss aversion": the reward that an agent obtains can be perceived as less valuable when compared to what the other got. We prove experimentally the introduction of loss aversion fosters cooperation by accelerating its appearance, and by making it possible in some cases like in the dynamic condition. We suggest that this may be an important factor explaining the rapid converge of human behaviour towards collaboration reported in the experiment of Hawkings and Goldstone.

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