arXiv:2412.01825cs.AIcs.CL2024-12被引 18

融合文本与传播网络信息,提升假新闻识别准确率

GETAE: Graph information Enhanced deep neural NeTwork ensemble ArchitecturE for fake news detection

  • 构建双分支模型:文本分支+传播路径分支协同学习
  • 在Twitter15和Twitter16数据集上超越现有最佳模型
  • 适合关注社交网络传播机制的虚假信息研究者

在数字时代,假新闻已引发社会动荡与政治危机,亟需新检测方法。本文提出GETAE——一种图信息增强的深度神经网络集成架构,通过结合新闻内容与传播行为信息提升检测效果。该模型包含两个分支:文本分支利用词嵌入与Transformer嵌入,结合前馈及双向RNN([Bi]RNN)学习上下文特征,生成文本内容嵌入;传播分支基于用户传播图网络,通过节点嵌入建模信息扩散路径,生成传播嵌入。最终,通过融合两者生成传播增强型内容嵌入,并用于分类。在公开数据集Twitter15与Twitter16上的实验表明,该方法显著优于现有主流模型。

原文摘要 · Abstract (English)

In today's digital age, fake news has become a major problem that has serious consequences, ranging from social unrest to political upheaval. To address this issue, new methods for detecting and mitigating fake news are required. In this work, we propose to incorporate contextual and network-aware features into the detection process. This involves analyzing not only the content of a news article but also the context in which it was shared and the network of users who shared it, i.e., the information diffusion. Thus, we propose GETAE, \underline{G}raph Information \underline{E}nhanced Deep Neural Ne\underline{t}work Ensemble \underline{A}rchitectur\underline{E} for Fake News Detection, a novel ensemble architecture that uses textual content together with the social interactions to improve fake news detection. GETAE contains two Branches: the Text Branch and the Propagation Branch. The Text Branch uses Word and Transformer Embeddings and a Deep Neural Network based on feed-forward and bidirectional Recurrent Neural Networks (\textsc{[Bi]RNN}) for learning novel contextual features and creating a novel Text Content Embedding. The Propagation Branch considers the information propagation within the graph network and proposes a Deep Learning architecture that employs Node Embeddings to create novel Propagation Embedding. GETAE Ensemble combines the two novel embeddings, i.e., Text Content Embedding and Propagation Embedding, to create a novel \textit{Propagation-Enhanced Content Embedding} which is afterward used for classification. The experimental results obtained on two real-world publicly available datasets, i.e., Twitter15 and Twitter16, prove that using this approach improves fake news detection and outperforms state-of-the-art models.

假新闻检测图神经网络传播分析

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