Theory of Mind Using Active Inference: A Framework for Multi-Agent Cooperation

• URL: http://arxiv.org/abs/2508.00401v1
• Date: Fri, 01 Aug 2025 08:02:35 GMT
• Title: Theory of Mind Using Active Inference: A Framework for Multi-Agent Cooperation
• Authors: Riddhi J. Pitliya, Ozan Catal, Toon Van de Maele, Corrado Pezzato, Tim Verbelen,
• Abstract summary: We present a novel approach to multi-agent cooperation by implementing theory of mind (ToM) within active inference.<n>ToM enables agents to reason about others' beliefs while planning their own actions.<n>We extend the sophisticated inference tree-based planning algorithm to systematically explore joint policy spaces.
• Score: 4.06613683722116
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a novel approach to multi-agent cooperation by implementing theory of mind (ToM) within active inference. ToM - the ability to understand that others can have differing knowledge and goals - enables agents to reason about others' beliefs while planning their own actions. Unlike previous active inference approaches to multi-agent cooperation, our method neither relies on task-specific shared generative models nor requires explicit communication, while being generalisable. In our framework, the ToM-equipped agent maintains distinct representations of its own and others' beliefs and goals. We extend the sophisticated inference tree-based planning algorithm to systematically explore joint policy spaces through recursive reasoning. Our approach is evaluated through collision avoidance and foraging task simulations. Results demonstrate that ToM-equipped agents cooperate better compared to non-ToM counterparts by being able to avoid collisions and reduce redundant efforts. Crucially, ToM agents accomplish this by inferring others' beliefs solely from observable behaviour. This work advances practical applications in artificial intelligence while providing computational insights into ToM.

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