Probabilistic Modeling of Intentions in Socially Intelligent LLM Agents
Abstract
We present a probabilistic intent modeling framework for large language model (LLM) agents in multi-turn social dialogue. The framework maintains a belief distribution over a partner's latent intentions, initialized from contextual priors and dynamically updated through likelihood estimation after each utterance. The evolving distribution provides additional contextual grounding for the policy, enabling adaptive dialogue strategies under uncertainty. Preliminary experiments in the SOTOPIA environment show consistent improvements: the proposed framework increases the Overall score by 9.0% on SOTOPIA-All and 4.1% on SOTOPIA-Hard compared with the Qwen2.5-7B baseline, and slightly surpasses an oracle agent that directly observes partner intentions. These early results suggest that probabilistic intent modeling can contribute to the development of socially intelligent LLM agents.
Keywords
Cite
@article{arxiv.2510.18476,
title = {Probabilistic Modeling of Intentions in Socially Intelligent LLM Agents},
author = {Feifan Xia and Yuyang Fang and Defang Li and Yantong Xie and Weikang Li and Yang Li and Deguo Xia and Jizhou Huang},
journal= {arXiv preprint arXiv:2510.18476},
year = {2025}
}