Detecting Hashtag Hijacking for Hashtag Activism

Pooneh Mousavi, Jessica Ouyang


Abstract
Social media has changed the way we engage in social activities. On Twitter, users can participate in social movements using hashtags such as #MeToo; this is known as hashtag activism. However, while these hashtags can help reshape social norms, they can also be used maliciously by spammers or troll communities for other purposes, such as signal boosting unrelated content, making a dent in a movement, or sharing hate speech. We present a Tweet-level hashtag hijacking detection framework focusing on hashtag activism. Our weakly-supervised framework uses bootstrapping to update itself as new Tweets are posted. Our experiments show that the system adapts to new topics in a social movement, as well as new hijacking strategies, maintaining strong performance over time.
Anthology ID:
2021.nlp4posimpact-1.9
Volume:
Proceedings of the 1st Workshop on NLP for Positive Impact
Month:
August
Year:
2021
Address:
Online
Editors:
Anjalie Field, Shrimai Prabhumoye, Maarten Sap, Zhijing Jin, Jieyu Zhao, Chris Brockett
Venue:
NLP4PI
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
82–92
Language:
URL:
https://aclanthology.org/2021.nlp4posimpact-1.9
DOI:
10.18653/v1/2021.nlp4posimpact-1.9
Bibkey:
Cite (ACL):
Pooneh Mousavi and Jessica Ouyang. 2021. Detecting Hashtag Hijacking for Hashtag Activism. In Proceedings of the 1st Workshop on NLP for Positive Impact, pages 82–92, Online. Association for Computational Linguistics.
Cite (Informal):
Detecting Hashtag Hijacking for Hashtag Activism (Mousavi & Ouyang, NLP4PI 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.nlp4posimpact-1.9.pdf