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Home > Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence, 36 > No. 4: AAAI-22 Technical Tracks 4

Heterogeneity-Aware Twitter Bot Detection with Relational Graph Transformers

February 1, 2023

Authors

Shangbin Feng

School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, China


Zhaoxuan Tan

School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, China


Rui Li

School of Continuing Education, Xi'an Jiaotong University, Xi'an, China


Minnan Luo

School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, China


Proceedings:

No. 4: AAAI-22 Technical Tracks 4

Volume

Issue:

Proceedings of the AAAI Conference on Artificial Intelligence, 36

Track:

AAAI Technical Track on Data Mining and Knowledge Management

Downloads:

Download PDF

Abstract:

Twitter bot detection has become an important and challenging task to combat misinformation and protect the integrity of the online discourse. State-of-the-art approaches generally leverage the topological structure of the Twittersphere, while they neglect the heterogeneity of relations and influence among users. In this paper, we propose a novel bot detection framework to alleviate this problem, which leverages the topological structure of user-formed heterogeneous graphs and models varying influence intensity between users. Specifically, we construct a heterogeneous information network with users as nodes and diversified relations as edges. We then propose relational graph transformers to model heterogeneous influence between users and learn node representations. Finally, we use semantic attention networks to aggregate messages across users and relations and conduct heterogeneity-aware Twitter bot detection. Extensive experiments demonstrate that our proposal outperforms state-of-the-art methods on a comprehensive Twitter bot detection benchmark. Additional studies also bear out the effectiveness of our proposed relational graph transformers, semantic attention networks and the graph-based approach in general.

DOI:

10.1609/aaai.v36i4.20314


AAAI

Proceedings of the AAAI Conference on Artificial Intelligence, 36



Topics: AAAI

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