Emo-tica at SemEval-2026 Task 2: Trait–State Affect Forecaster for Longitudinal Valence and Arousal

Sadia Noor, Mehwish Fatima


Abstract
Modeling longitudinal affect requires capturing both stable user tendencies and transient textual signals. For SemEval-2026 Task 2, we propose the Trait-State Affect Forecaster (TSAF), which decomposes affect into persistent user traits and text-conditioned states integrated through adaptive gating. On per-text prediction (Subtask 1), TSAF achieves composite Pearson correlations of 0.645 for valence and 0.409 for arousal, outperforming the Linear(BERT) baseline. In forecasting tasks, results reveal strong short-term affective inertia, where prior affect dominates next-step prediction, while long-term drift remains challenging under sparse supervision; TSAF shows comparatively stronger gains for arousal in this setting. Analyses across user splits and modalities highlight the strengths and trade-offs of explicit trait-state modeling, particularly under cold-start and short-text conditions.
Anthology ID:
2026.semeval-1.31
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:
213–220
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.31/
DOI:
Bibkey:
Cite (ACL):
Sadia Noor and Mehwish Fatima. 2026. Emo-tica at SemEval-2026 Task 2: Trait–State Affect Forecaster for Longitudinal Valence and Arousal. In Proceedings of the 20th International Workshop on Semantic Evaluation (2026), pages 213–220, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
Emo-tica at SemEval-2026 Task 2: Trait–State Affect Forecaster for Longitudinal Valence and Arousal (Noor & Fatima, SemEval 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.31.pdf
Supplementarymaterial:
 2026.semeval-1.31.SupplementaryMaterial.zip