IIITH Boys at SemEval-2026 Task 4: StoryNet - Understanding Narrative Story Similarity through Symbolic Representations

Amol Vijayachandran, Ananth Rajesh, Siddharth Mago, Maitreya Chitale, Aparajitha Allamraju


Abstract
Narrative similarity extends beyond standard semantic tasks, requiring alignment of temporal, causal, and emotional structures. We present StoryNet, a framework that represents stories as heterogeneous graphs with character, event, and theme nodes. Stories are decomposed into structured narrative facets using large language models, and similarity is evaluated through both weighted semantic facet comparison and a graph neural network trained with contrastive learning. We analyze how integrating symbolic structure with learned graph representations compares to purely embedding-based baselines.
Anthology ID:
2026.semeval-1.420
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:
3382–3393
Language:
URL:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.420/
DOI:
Bibkey:
Cite (ACL):
Amol Vijayachandran, Ananth Rajesh, Siddharth Mago, Maitreya Chitale, and Aparajitha Allamraju. 2026. IIITH Boys at SemEval-2026 Task 4: StoryNet - Understanding Narrative Story Similarity through Symbolic Representations. In Proceedings of the 20th International Workshop on Semantic Evaluation (2026), pages 3382–3393, San Diego, California, USA. Association for Computational Linguistics.
Cite (Informal):
IIITH Boys at SemEval-2026 Task 4: StoryNet - Understanding Narrative Story Similarity through Symbolic Representations (Vijayachandran et al., SemEval 2026)
Copy Citation:
PDF:
https://preview.aclanthology.org/ingest-acl-workshops/2026.semeval-1.420.pdf
Supplementarymaterial:
 2026.semeval-1.420.SupplementaryMaterial.zip