Jahan, Md Saroar, Oussalah, Mourad and Mohamed, Muhidin (2022). Data Expansion Using WordNet-based Semantic Expansion and Word Disambiguation for Cyberbullying Detection. IN: Data Expansion Using WordNet-based Semantic Expansion and Word Disambiguation for Cyberbullying Detection. FRA: UNSPECIFIED.
Abstract
Automatic identification of cyberbullying from textual content is known to be a challenging task. The challenges arise from the inherent structure of cyberbullying and the lack of labeled large-scale corpus, enabling efficient machine-learning-based tools including neural networks. This paper advocates a data augmentation-based approach that could enhance the automatic detection of cyberbullying in social media texts. We use both word sense disambiguation and synonymy relation in WordNet lexical database to generate coherent equivalent utterances of cyberbullying input data. The disambiguation and semantic expansion are intended to overcome the inherent limitations of social media posts, such as an abundance of unstructured constructs and limited semantic content. Besides, to test the feasibility, a novel protocol has been employed to collect cyberbullying traces data from AskFm forum, where about a 10K-size dataset has been manually labeled. Next, the problem of cyberbullying identification is viewed as a binary classification problem using an elaborated data augmentation strategy and an appropriate classifier. For the latter, a Convolutional Neural Network (CNN) architecture with FastText and BERT was put forward, whose results were compared against commonly employed Na¨ıve Bayes (NB) and Logistic Regression (LR) classifiers with and without data augmentation. The research outcomes were promising and yielded almost 98.4% of classifier accuracy, an improvement of more than 4% over baseline results.
Divisions: | College of Business and Social Sciences > Aston Business School > Operations & Information Management |
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Additional Information: | © European Language Resources Association (ELRA), licensed under CC-BY-NC-4.0 |
Event Title: | 13th Conference on Language Resources and Evaluation (LREC 2022) |
Event Type: | Other |
Event Dates: | 2022-06-20 - 2022-06-25 |
Last Modified: | 05 Aug 2024 09:05 |
Date Deposited: | 24 Jun 2022 08:04 |
Full Text Link: |
http://www.lrec ... .lrec-1.187.pdf |
Related URLs: | PURE Output Type: | Conference contribution |
Published Date: | 2022-06-20 |
Authors: |
Jahan, Md Saroar
Oussalah, Mourad Mohamed, Muhidin |