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A Bi-GRU with attention and CapsNet hybrid model for cyberbullying detection on social media

Abstract

As a constructive mode of information sharing, collaboration and communication, social media platforms offer users with limitless opportunities. The same hypermedia can be transposed into a synthetic and toxic milieu that provides an anonymous, destructive pedestal for online bullying and harassment. Automatic cyberbullying detection on social media using synthetic or real-world datasets is one of a proverbial natural language processing problem. Analyzing a given text requires capturing the existent semantics, syntactic and spatial relationships. Learning representative features automatically using deep learning models efficiently captures the contextual semantics and word order arrangement to build robust and superlative predictive models. This work puts forward a hybrid model, Bi-GRU-Attention-CapsNet (Bi-GAC), that benefits by learning sequential semantic representations and spatial location information using a Bi-GRU with self-attention followed by CapsNet for cyberbullying detection in the textual content of social media. The proposed Bi-GAC model is evaluated for performance using F1-score and ROC-AUC curve as metrics. The results show a superior performance to the existing techniques on the benchmark Formspring.me and MySpace datasets. In comparison to the conventional models, an improvement of nearly 9% and 3% in F-score is observed for MySpace and Formspring.me dataset respectively.

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Data availability

Benchmark publicly available datasets have been used.

Code availability

Can be made available on request.

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All the authors have contributed equally in the research and manuscript preparation.

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Correspondence to Akshi Kumar.

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This article belongs to the Topical Collection: Special Issue on Synthetic Media on the Web

Guest Editors: Huimin Lu, Xing Xu, Jože Guna, and Gautam Srivastava

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Kumar, A., Sachdeva, N. A Bi-GRU with attention and CapsNet hybrid model for cyberbullying detection on social media. World Wide Web (2021). https://doi.org/10.1007/s11280-021-00920-4

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Keywords

  • CapsNet
  • Bi-GRU
  • Cyberbullying
  • Deep learning
  • Social media