Learning to cooperate: Emergent communication in multi-agent navigation

42nd Annual Meeting of the Cognitive Science Society, 2020

Ivana Kajić, Eser Aygün, Doina Precup


Emergent communication in artificial agents has been studied to understand language evolution, as well as to develop artificial systems that learn to communicate with humans. We show that agents performing a cooperative navigation task in various gridworld environments learn an interpretable communication protocol that enables them to efficiently, and in many cases, optimally, solve the task. An analysis of the agents' policies reveals that emergent signals spatially cluster the state space, with signals referring to specific locations and spatial directions such as left, up, or upper left room. Using populations of agents, we show that the emergent protocol has basic compositional structure, thus exhibiting a core property of natural language.

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Conference Proceedings

42nd Annual Meeting of the Cognitive Science Society
Cognitive Science Society
Toronto, ON


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