CUET_SYNTHETICA@DravidianLangTech 2026: Multilingual Transformer Based Hope Speech Detection for Coarse and Fine-Grained Classification in Tulu

Sumaiya Zaman, Miftahul Jannat Rishta, Shiti Chowdhury, Hasan Murad


Abstract
Hope speech has played a vital role in online communities, yet most NLP work has focused on English and a few high-resource languages, leaving code-mixed varieties like Tulu largely unexplored. In the Shared Task on Hope Speech Detection in Code-Mixed Tulu at DravidianLangTech@ACL 2026, we have tackled two subtasks: (i) coarse-grained classification into Encouraging, Discouraging, Uninvolved and Blended categories (Task 1) and (ii) fine-grained classification into Optimistic, Realistic, Inspiring, Fading and Hopelessness (Task 2).We have fine-tuned three multilingual transformer encoders XLM-RoBERTa-base, MuRIL and mBERT on the official training splits. In Task 1, a three-way soft-voting ensemble of all three models has yielded the best performance with a macro F1 of 0.58, securing 1st place. In Task 2, XLM-RoBERTa-base alone has outperformed both MuRIL and mBERT, achieving a macro F1 of 0.42 and also securing 1st place.
Anthology ID:
2026.dravidianlangtech-1.30
Volume:
Proceedings of the Sixth Workshop on Speech, Vision, and Language Technologies for Dravidian Languages
Month:
July
Year:
2026
Address:
Underline (Virtual)
Editors:
Bharathi Raja Chakravarthi, Ruba Priyadharshini, Anand Kumar Madasamy, Sajeetha Thavareesan, Saranya Rajiakodi, Subalalitha Navaneethakrishnan, Dhivya Chinnappa, Balasubramanian Palani, Malliga Subramanian, Kogilavani Shanmugavadivel, Ratnavel Rajalakshmi
Venues:
DravidianLangTech | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
217–221
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.dravidianlangtech-1.30/
DOI:
Bibkey:
Cite (ACL):
Sumaiya Zaman, Miftahul Jannat Rishta, Shiti Chowdhury, and Hasan Murad. 2026. CUET_SYNTHETICA@DravidianLangTech 2026: Multilingual Transformer Based Hope Speech Detection for Coarse and Fine-Grained Classification in Tulu. In Proceedings of the Sixth Workshop on Speech, Vision, and Language Technologies for Dravidian Languages, pages 217–221, Underline (Virtual). Association for Computational Linguistics.
Cite (Informal):
CUET_SYNTHETICA@DravidianLangTech 2026: Multilingual Transformer Based Hope Speech Detection for Coarse and Fine-Grained Classification in Tulu (Zaman et al., DravidianLangTech 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.dravidianlangtech-1.30.pdf