PolarizedTeam at SemEval-2026 Task 9: Detecting Multilingual, Multicultural and Multievent Online Polarization
Maria Nestor, Maroan Al Shrafat, Ioana Pește, Daniela Gifu, Diana Trandabăț
Abstract
This paper presents the systems developed for SemEval-2026 Task 9, which targets the detection and categorization of multilingual, multicultural, and multi-event online polarization across 22 languages. To address the challenges posed by linguistic diversity and short, heterogeneous texts, we evaluate several Transformer-based architectures for multilingual polarization detection. Our approach models the task as a multi-label classification problem and incorporates mean pooling for sentence representation, focal loss to mitigate severe label imbalance, and label-wise attention mechanisms to capture polarization-specific linguistic cues. Experimental results show that combining robust multilingual encoders with label-aware modelling substantially improves the detection of polarized content across diverse communities and events- Anthology ID:
- 2026.semeval-1.180
- Volume:
- Proceedings of the 20th International Workshop on Semantic Evaluation (2026)
- Month:
- July
- Year:
- 2026
- Address:
- San Diego, California, USA
- Editors:
- Ekaterina Kochmar, Debanjan Ghosh, Kai North, Mamoru Komachi
- Venues:
- SemEval | WS
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 1391–1397
- Language:
- URL:
- https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.180/
- DOI:
- Cite (ACL):
- Maria Nestor, Maroan Al Shrafat, Ioana Pește, Daniela Gifu, and Diana Trandabăț. 2026. PolarizedTeam at SemEval-2026 Task 9: Detecting Multilingual, Multicultural and Multievent Online Polarization. In Proceedings of the 20th International Workshop on Semantic Evaluation (2026), pages 1391–1397, San Diego, California, USA. Association for Computational Linguistics.
- Cite (Informal):
- PolarizedTeam at SemEval-2026 Task 9: Detecting Multilingual, Multicultural and Multievent Online Polarization (Nestor et al., SemEval 2026)
- PDF:
- https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.180.pdf