Boosting Social Spam Detection via Attention Mechanisms on Twitter

被引:3
|
作者
Shen, Hua [1 ,2 ,3 ]
Liu, Xinyue [2 ]
Zhang, Xianchao [2 ]
机构
[1] Dalian Univ Technol, Fac Elect Informat & Elect Engn, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Sch Software, Dalian 116620, Peoples R China
[3] Anshan Normal Univ, Coll Math & Informat Sci, Anshan 114007, Peoples R China
基金
中国国家自然科学基金;
关键词
attention mechanism; graph attention network; BERTweet pretrained model; social spam detection; GRAPH NEURAL-NETWORK;
D O I
10.3390/electronics11071129
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Twitter is one of the largest social networking platforms, which allows users to make friends, read the latest news, share personal ideas, and discuss social issues. The huge popularity of Twitter mean it attracts a lot of online spammers. Traditional spam detection approaches have shown the effectiveness for identifying Twitter spammers by extracting handcrafted features and training machine learning models. However, such models need knowledge from domain experts. Moreover, the behaviors of spammers can change according to the defense strategies of Twitter. These result in the ineffectiveness of the traditional feature-based approaches. Although deep-learning-based approaches have been proposed for detecting Twitter spammers, they all treat each tweet equally, and ignore the differences among them. To solve these issues, in this paper, we propose a new attention-based deep learning model to detect social spammers in Twitter. In particular, we first introduce the state-of-the-art pretraining model BERTweet for learning the representation of each tweet, and then use the proposed novel attention-based mechanism to learn the user representations by distinguishing the differences among tweets posted by each user. Moreover, we take social interactions into consideration and propose that a graph attention network is used to update the learned user representations, to further improve the accuracy of identifying spammers. Experiments on a publicly available, real-world Twitter dataset show the effectiveness of the proposed model, which is able to significantly enhance the performance.
引用
收藏
页数:15
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