DUTIR at SemEval-2026 Task 4: Narrative Story Similarity and Narrative Representation Learning

Tala Borjigin, Liang Yang


Abstract
This paper presents our approach for SemEval 2026 Task 4. Our method leverages a large language model fine-tuned via Low-Rank Adaptation, incorporates data cleaning, and employs a multi-prompt strategy, all trained on the official synthetic dataset. Evaluated on Track A, our system achieved an official score of 0.70, representing a reasonable performance under the given task constraints. In addition, we explore an alternative contrastive learning framework originally designed for Track B, where narrative-structure embeddings are learned and subsequently applied to Track A via similarity comparisons. Our analysis suggests that direct supervised adaptation may be more suitable for narrative reasoning tasks.
Anthology ID:
2026.semeval-1.378
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:
3010–3014
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.378/
DOI:
Bibkey:
Cite (ACL):
Tala Borjigin and Liang Yang. 2026. DUTIR at SemEval-2026 Task 4: Narrative Story Similarity and Narrative Representation Learning. In Proceedings of the 20th International Workshop on Semantic Evaluation (2026), pages 3010–3014, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
DUTIR at SemEval-2026 Task 4: Narrative Story Similarity and Narrative Representation Learning (Borjigin & Yang, SemEval 2026)
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PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.378.pdf