arXiv:2506.11078cs.CL2025-06被引 2

用历史案例训练AI识别假新闻,避免幻觉和偏见。

RoE-FND: A Case-Based Reasoning Approach with Dual Verification for Fake News Detection via LLMs

  • 基于过往错误构建知识库,让AI从经验中学习推理。
  • 部署时动态调用历史案例生成推理依据,提升准确性。
  • 无需重新训练,可适应新情况,适合需要可靠判断的场景。

网络虚假内容泛滥亟需可靠的假新闻检测(FND)系统。现有基于证据的方法存在证据噪声、泛化能力差和决策过程不透明等问题。利用大语言模型(LLMs)虽带来新可能,却面临幻觉性推理和结论偏见等挑战。为此,我们提出RoE-FND(基于经验的假新闻检测),将证据驱动的检测重构为逻辑推理任务,融合大模型与经验学习。该框架包含两个阶段:(1) 自省式知识构建,在探索阶段分析过往推理错误以建立知识库;(2) 动态准则检索,在部署时从历史案例中提取任务特定推理规则作为经验。同时通过双通道机制对推理过程进行内部经验交叉验证。主要贡献包括:一个解决多重问题的案例推理框架、无需训练即可适应变化环境的方法,以及在三个数据集上实证优于当前最优方法的泛化性与有效性。

原文摘要 · Abstract (English)

The proliferation of deceptive content online necessitates robust Fake News Detection (FND) systems. While evidence-based approaches leverage external knowledge to verify claims, existing methods face critical limitations: noisy evidence selection, generalization bottlenecks, and unclear decision-making processes. Recent efforts to harness Large Language Models (LLMs) for FND introduce new challenges, including hallucinated rationales and conclusion bias. To address these issues, we propose \textbf{RoE-FND} (\textbf{\underline{R}}eason \textbf{\underline{o}}n \textbf{\underline{E}}xperiences FND), a framework that reframes evidence-based FND as a logical deduction task by synergizing LLMs with experiential learning. RoE-FND encompasses two stages: (1) \textit{self-reflective knowledge building}, where a knowledge base is curated by analyzing past reasoning errors, namely the exploration stage, and (2) \textit{dynamic criterion retrieval}, which synthesizes task-specific reasoning guidelines from historical cases as experiences during deployment. It further cross-checks rationales against internal experience through a devised dual-channel procedure. Key contributions include: a case-based reasoning framework for FND that addresses multiple existing challenges, a training-free approach enabling adaptation to evolving situations, and empirical validation of the framework's superior generalization and effectiveness over state-of-the-art methods across three datasets.

假新闻检测大模型推理增强案例学习

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