Identification of key cyberbullies: A text mining and social network analysis approach. (January 2021)

• Record Type: Journal Article
• Authors: Choi, Yoon-Jin; Jeon, Byeong-Jin; Kim, Hee-Woong
• Is Part Of: Telematics and informatics. Volume 56(2021)
• Publication Date: 2021-01
• Subjects: Cyberbullying -- Cyberbully -- Losada ratio -- Cyberbullying index -- Text mining -- Social network analysis -- Centrality; Telecommunication -- Periodicals; Computer networks -- Periodicals; Télécommunications -- Périodiques; Réseaux d'ordinateurs -- Périodiques; 384
• DOI: 10.1016/j.tele.2020.101504
• Languages: English
• ISSNs: 0736-5853

Abstract

Highlights: Cyberbullying as a major problem in society. Blocking malicious comments via identifying key offenders. The application of methods of text mining and social network analysis. Proposing a cyberbullying index and calculating the Losada ration. Validating the proposed method of identifying key cyberbullies. Abstract: Cyberbullying is a major problem in society, and the damage it causes is becoming increasingly significant. Previous studies on cyberbullying focused on detecting and classifying malicious comments. However, our study focuses on a substantive alternative to block malicious comments via identifying key offenders through the application of methods of text mining and social network analysis (SNA). Thus, we propose a practical method of identifying social network users who make high rates of insulting comments and analyzing their resultant influence on the community. We select the Korean online community of Daum Agora to validate our proposed method. We collect over 650, 000 posts and comments via web crawling. By applying a text mining method, we calculate the Losada ratio, a ratio of positive-to-negative comments. We then propose a cyberbullying index and calculate it based on text mining. By applying the SNA method, we analyze relationships among users so as to ascertain the influence that the core users have on the community. We validate the proposed method of identifying key cyberbullies through a real-world application and evaluations. The proposed method has implications for managing online communities and reducing cyberbullying.