Journal Article

Automatic detection of cyberbullying in social media text

Van Hee, Cynthia, Desmet, Bart, Lefever, Els, Verhoeven, Ben, Daelemans, Walter, De Pauw, Guy, Hoste, Véronique, Jacobs, Gilles, Emmery, Chris

2018

Overview

While social media offer great communication opportunities, they also increase the vulnerability of young people to threatening situations online. Recent studies report that cyberbullying constitutes a growing problem among youngsters. Successful prevention depends on the adequate detection of potentially harmful messages and the information overload on the Web requires intelligent systems to identify potential risks automatically. The focus of this paper is on automatic cyberbullying detection in social media text by modelling posts written by bullies, victims, and bystanders of online bullying. We describe the collection and fine-grained annotation of a cyberbullying corpus for English and Dutch and perform a series of binary classification experiments to determine the feasibility of automatic cyberbullying detection. We make use of linear support vector machines exploiting a rich feature set and investigate which information sources contribute the most for the task. Experiments on a hold-out test set reveal promising results for the detection of cyberbullying-related posts. After optimisation of the hyperparameters, the classifier yields an F1 score of 64% and 61% for English and Dutch respectively, and considerably outperforms baseline systems.

• Publisher: Public Library of Science,Public Library of Science (PLoS)
• Subject: Annotations / Artificial intelligence / Bullying / Communication / Computer and Information Sciences / Content analysis / Cyberbullying / Digital media / Feasibility studies / Information sources / International conferences / Internet / Language / Linguistics / Natural language processing / Philosophy / Semantics / Sentiment analysis / Social aspects / Social media / Social networks / Social research / Social Sciences / Suicides & suicide attempts / Support vector machines / User generated content / Web 2.0 / Young adults