CuriosAI at SemEval-2026 Task 2: Predicting Emotion using RoBERTa-large model

Fumika Beppu, Hiroki Takushima, Aiswariya Manoj, Daichi Yamaga, Yuki Shibata, Takayuki Hori


Abstract
This paper proposes a method for predicting continuous emotion dimensions, namely Valence and Arousal, from text by combining affective intermediate training with multi-task learning. The proposed approach consists of two training phases: an intermediate pre-training phase using external emotion datasets, followed by a multi-task learning phase using task-specific data. RoBERTa-large is employed as the backbone model, and independent regression heads are introduced for each subtask. Experimental results show that the proposed method achieves Pearson correlation coefficients of 0.68 for Valence and 0.45 for Arousal on Subtask 1, demonstrating stable performance, particularly in capturing inter-user differences in emotional expression.
Anthology ID:
2026.semeval-1.18
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:
121–126
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.18/
DOI:
Bibkey:
Cite (ACL):
Fumika Beppu, Hiroki Takushima, Aiswariya Manoj, Daichi Yamaga, Yuki Shibata, and Takayuki Hori. 2026. CuriosAI at SemEval-2026 Task 2: Predicting Emotion using RoBERTa-large model. In Proceedings of the 20th International Workshop on Semantic Evaluation (2026), pages 121–126, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
CuriosAI at SemEval-2026 Task 2: Predicting Emotion using RoBERTa-large model (Beppu et al., SemEval 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.18.pdf
Supplementarymaterial:
 2026.semeval-1.18.SupplementaryMaterial.zip