Verbalized Bayesian Persuasion

Fuente: arXiv
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Hauptverfasser: Li, Wenhao, Lin, Yue, Wang, Xiangfeng, Jin, Bo, Zha, Hongyuan, Wang, Baoxiang
Format: Preprint
Veröffentlicht: 2025
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author Li, Wenhao
Lin, Yue
Wang, Xiangfeng
Jin, Bo
Zha, Hongyuan
Wang, Baoxiang
author_facet Li, Wenhao
Lin, Yue
Wang, Xiangfeng
Jin, Bo
Zha, Hongyuan
Wang, Baoxiang
contents Information design (ID) explores how a sender influence the optimal behavior of receivers to achieve specific objectives. While ID originates from everyday human communication, existing game-theoretic and machine learning methods often model information structures as numbers, which limits many applications to toy games. This work leverages LLMs and proposes a verbalized framework in Bayesian persuasion (BP), which extends classic BP to real-world games involving human dialogues for the first time. Specifically, we map the BP to a verbalized mediator-augmented extensive-form game, where LLMs instantiate the sender and receiver. To efficiently solve the verbalized game, we propose a generalized equilibrium-finding algorithm combining LLM and game solver. The algorithm is reinforced with techniques including verbalized commitment assumptions, verbalized obedience constraints, and information obfuscation. Numerical experiments in dialogue scenarios, such as recommendation letters, courtroom interactions, and law enforcement, validate that our framework can both reproduce theoretical results in classic BP and discover effective persuasion strategies in more complex natural language and multi-stage scenarios.
format Preprint
id arxiv_https___arxiv_org_abs_2502_01587
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Verbalized Bayesian Persuasion
Li, Wenhao
Lin, Yue
Wang, Xiangfeng
Jin, Bo
Zha, Hongyuan
Wang, Baoxiang
Computer Science and Game Theory
Artificial Intelligence
Machine Learning
Information design (ID) explores how a sender influence the optimal behavior of receivers to achieve specific objectives. While ID originates from everyday human communication, existing game-theoretic and machine learning methods often model information structures as numbers, which limits many applications to toy games. This work leverages LLMs and proposes a verbalized framework in Bayesian persuasion (BP), which extends classic BP to real-world games involving human dialogues for the first time. Specifically, we map the BP to a verbalized mediator-augmented extensive-form game, where LLMs instantiate the sender and receiver. To efficiently solve the verbalized game, we propose a generalized equilibrium-finding algorithm combining LLM and game solver. The algorithm is reinforced with techniques including verbalized commitment assumptions, verbalized obedience constraints, and information obfuscation. Numerical experiments in dialogue scenarios, such as recommendation letters, courtroom interactions, and law enforcement, validate that our framework can both reproduce theoretical results in classic BP and discover effective persuasion strategies in more complex natural language and multi-stage scenarios.
title Verbalized Bayesian Persuasion
topic Computer Science and Game Theory
Artificial Intelligence
Machine Learning
url https://arxiv.org/abs/2502.01587