基于多角度分析的大语言模型虚假信息检测OA
Large Language Models for Misinformation Detection Based on Multi-angle Analysis
虚假信息在社交媒体上的传播频繁,而现有基于深度学习和图神经网络的方法在适应复杂环境和提供可解释性方面仍存在局限.此外,大语言模型(Large Language Models,LLMs)虽具有强大语言理解能力,但在处理复杂文本线索和传播模式时,其潜力尚未被充分发挥.本文提出了一种基于大语言模型的多角度特征提取框架,旨在充分发挥LLMs的深层语义挖掘能力和可解释性优势.具体而言,本框架通过设计一套多维度提示指令,引导LLMs从写作风格、事实一致性、网友情绪等十个角度对社交媒体内容进行分析,并输出详细的解释性答复.接着,利用大语言模型的特征提取能力获取数据的会话链语义表示和解释性文本语义表示,并利用多层感知机进行分类训练,从而实现虚假信息的低成本高效检测.实验结果表明,本文方法的F1分数、准确率等关键指标显著超越了图神经网络与LLMs两类基线方法,在Weibo、Twitter15和Twitter16三个公开数据集上其F1分数与最优基线方法相比分别提高了1.4%、3.8%和3.5%.此外,该方法在保持高性能的同时,大幅降低了训练成本,提升了模型决策的透明度和可解释性.
The spread of misinformation on social media is continual,however,existing methods based on deep learning and graph neural networks still face limitations in adapting to complex environments and providing interpretability.In addition,although large language models(LLMs)possess powerful language understanding capabilities,their potential in handling complex textual cues and propagation patterns has not been fully explored.This paper proposes a multi-angle feature extraction framework based on large lan-guage models,aiming to fully leverage the deep semantic mining and interpretability advantages of LLMs.Specifically,this frame-work guides LLMs to analyze social media content from ten perspectives,such as writing style,factual consistency,and netizen's sentiment,and outputs detailed explanatory responses by designing a set of multi-angle prompting instructions.The model then out-puts detailed responses along with explanatory rationales for each question.Subsequently,the framework utilizes the feature extrac-tion function of LLM to obtain the semantic representation of the session chain and the semantic representation of the interpreted text of the raw data,and further processes them with classification training using a multilayer perceptron,thus realizing low-cost and high-efficiency misinformation detection.Experimental results demonstrate that the proposed method in this paper significantly sur-passes two categories of baseline methods,Graph Neural Networks(GNNs)and Large Language Models(LLMs),in key metrics such as F1-score and accuracy.On the three public datasets of Weibo,Twitter15,and Twitter16,the proposed method in this paper improves the F1-score by 1.4%,3.8%and 3.5%,respectively,compared to the strongest baseline.Furthermore,the method not only maintains high performance but also substantially reduces training costs while enhancing the transparency and interpretability of model decision-making.
贾彩燕;杨子琦;赵一;白祥意
北京交通大学 计算机科学与技术学院,北京 100080北京交通大学 计算机科学与技术学院,北京 100080北京交通大学 计算机科学与技术学院,北京 100080北京交通大学 詹天佑学院,北京 100080
信息技术与安全科学
社交媒体分析谣言检测人工智能提示工程可解释性
social media analysisrumor detectionartificial intelligenceprompt engineeringinterpretability
《山西大学学报(自然科学版)》 2026 (2)
189-198,10
国家自然科学基金(62576026)中央高校基础科研业务项目(2024XKRC024)
评论