SAMGAT:用于自动传闻检测的结构感知多层图表注意力网络
Yafang Li1, Zhihua Chu1, Caiyan Jia2
1Faculty of lnformation Technology, Beijing University of Technology, Beijing, China.
PeerJ. Computer science
|August 15, 2024
概括
这项研究引入了一种新的方法,结构意识多层次图表注意网络 (SAMGAT),用于检测社交媒体上的假新闻. SAMGAT有效地分析信息传播模式,提高谣言分类准确度.
科学领域:
- 计算机科学 计算机科学
- 社交计算社会计算
- 人工智能的人工智能
背景情况:
- 社交媒体上未经验证的信息的快速传播带来了重大的社会风险.
- 现有的谣言检测方法难以捕捉传播结构并过不相关的评论.
研究的目的:
- 引入一种新的方法,即结构意识多层次图表注意网络 (SAMGAT),用于有效的谣言分类.
- 提高虚假新闻识别系统的准确性和早期检测能力.
主要方法:
- 开发了SAMGAT,一个图表注意力网络,结合了动态注意力 (GATv2和dot-product) 来建模上下文关系.
- 实施了一个结构意识的注意力机制,通过学习边缘指示注意力权重来反映谣言传播结构.
- 利用top-k注意力过和声明导向的注意力聚合,专注于关键的结构特征和信息性帖子.
主要成果:
- 相比于最先进的方法,SAMGAT在谣言检测的基准数据集上表现优越.
- 拟议的模型显著提高了早期谣言检测的有效性.
结论:
- SAMGAT为分析社交媒体上复杂信息传播模式提供了一个强大的框架.
- 这种方法提高了识别和减轻错误信息传播的能力.
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