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A 7B AI agent reportedly learns to infer a partner’s beliefs and goals during training

A post describing a UC San Diego paper says a separate model scores candidate replies during reinforcement learning.

1 Source, 1d ago, first seen 1d ago

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A post describing the UC San Diego paper “Mental-Models for Multi-Agent Systems” says researchers use a model of a partner’s beliefs, intentions and thoughts to score a 7B agent’s candidate replies during reinforcement learning. The post says the trained agent runs without that extra model at deployment.

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Rohan Paul@rohanpaul_aiA new UC San Diego paper builds theory of mind into a 7B agent through its training reward, so the agent learns to read a partner’s beliefs and goals and then runs on its own with no extra model at deployment. LLM agents that negotiate, cooperate or role-play usually guess the other side's goals from prompt text or memory summaries. They keep no explicit estimate of the partner's knowledge or plans, so they can misread intent. They train a model that infers the partner's beliefs, intents and thoughts, including what the partner thinks of the agent. That model scores candidate replies during RL, and the final agent runs alone without it. For agents that negotiate or collaborate, train with a reward that judges replies against an inferred model of the partner's goals and beliefs. – arxiv. org/abs/2610.12453 Title: "Mental-Models for Multi-Agent Systems"1d
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    Rohan Paul@rohanpaul_aiA new UC San Diego paper builds theory of mind into a 7B agent through its training reward, so the agent learns to read a partner’s beliefs and goals and then runs on its own with no extra model at deployment. LLM agents that negotiate, cooperate or role-play usually guess the other side's goals from prompt text or memory summaries. They keep no explicit estimate of the partner's knowledge or plans, so they can misread intent. They train a model that infers the partner's beliefs, intents and thoughts, including what the partner thinks of the agent. That model scores candidate replies during RL, and the final agent runs alone without it. For agents that negotiate or collaborate, train with a reward that judges replies against an inferred model of the partner's goals and beliefs. – arxiv. org/abs/2610.12453 Title: "Mental-Models for Multi-Agent Systems"1d
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