arXiv:2602.03158cs.IR2026-02被引 4

用多智能体协作识别虚假信息,通过视角聚合避免被真实内容淹没。

PAMAS: Self-Adaptive Multi-Agent System with Perspective Aggregation for Misinformation Detection

  • 分角色设计审计、协调与决策者,聚焦异常线索
  • 在多个数据集上准确率超越现有方法,兼具高效与可扩展性
  • 适合关注社交媒体虚假信息检测的AI研究者

社交媒体上的虚假信息对信息可信度构成严重威胁,其多样性和上下文依赖性使检测难度加大。基于大语言模型的多智能体系统(MAS)通过协同推理和集体智慧提供了有前景的解决方案。然而,传统MAS存在信息淹没问题:大量真实内容掩盖了稀疏且微弱的欺骗性信号。由于所有智能体拥有完整输入,容易聚焦主导模式,而智能体间通信进一步放大这一偏差。为此,我们提出PAMAS,一种具有视角聚合能力的自适应多智能体系统,采用分层视角感知聚合机制,突出异常线索,缓解信息淹没。PAMAS将智能体分为三类角色:审计者从特定特征子集捕捉异常线索;协调者聚合各方视角以增强覆盖范围并保持多样性;决策者则具备动态记忆和全上下文访问能力,综合下属见解生成最终判断。此外,为提升协作效率,PAMAS引入自适应机制实现拓扑动态优化与基于路由的推理,显著提升效率与可扩展性。在多个基准数据集上的广泛实验表明,PAMAS在准确率与效率方面均表现卓越,提供了一种可扩展且可信的虚假信息检测方案。

原文摘要 · Abstract (English)

Misinformation on social media poses a critical threat to information credibility, as its diverse and context-dependent nature complicates detection. Large language model-empowered multi-agent systems (MAS) present a promising paradigm that enables cooperative reasoning and collective intelligence to combat this threat. However, conventional MAS suffer from an information-drowning problem, where abundant truthful content overwhelms sparse and weak deceptive cues. With full input access, agents tend to focus on dominant patterns, and inter-agent communication further amplifies this bias. To tackle this issue, we propose PAMAS, a multi-agent framework with perspective aggregation, which employs hierarchical, perspective-aware aggregation to highlight anomaly cues and alleviate information drowning. PAMAS organizes agents into three roles: Auditors, Coordinators, and a Decision-Maker. Auditors capture anomaly cues from specialized feature subsets; Coordinators aggregate their perspectives to enhance coverage while maintaining diversity; and the Decision-Maker, equipped with evolving memory and full contextual access, synthesizes all subordinate insights to produce the final judgment. Furthermore, to improve efficiency in multi-agent collaboration, PAMAS incorporates self-adaptive mechanisms for dynamic topology optimization and routing-based inference, enhancing both efficiency and scalability. Extensive experiments on multiple benchmark datasets demonstrate that PAMAS achieves superior accuracy and efficiency, offering a scalable and trustworthy way for misinformation detection.

虚假信息检测多智能体系统大模型应用

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