LA²I²F at SemEval-2025 Task 5: Reasoning in Embedding Space – Fusing Analogical and Ontology-based Reasoning for Document Subject Tagging

Andrea Salfinger, Luca Zaccagna, Francesca Incitti, Gianluca De Nardi, Lorenzo Dal Fabbro, Lauro Snidaro


Abstract
The LLMs4Subjects shared task invited system contributions that leverage a technical library’s tagged document corpus to learn document subject tagging, i.e., proposing adequate subjects given a document’s title and abstract. To address the imbalance of this training corpus, team LA²I²F devised a semantic retrieval-based system fusing the results of ontological and analogical reasoning in embedding vector space. Our results outperformed a naive baseline of prompting a llama 3.1-based model, whilst being computationally more efficient and competitive with the state of the art.
Anthology ID:
2025.semeval-1.314
Volume:
Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025)
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Sara Rosenthal, Aiala Rosá, Debanjan Ghosh, Marcos Zampieri
Venues:
SemEval | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
2413–2423
Language:
URL:
https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.314/
DOI:
Bibkey:
Cite (ACL):
Andrea Salfinger, Luca Zaccagna, Francesca Incitti, Gianluca De Nardi, Lorenzo Dal Fabbro, and Lauro Snidaro. 2025. LA²I²F at SemEval-2025 Task 5: Reasoning in Embedding Space – Fusing Analogical and Ontology-based Reasoning for Document Subject Tagging. In Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025), pages 2413–2423, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
LA²I²F at SemEval-2025 Task 5: Reasoning in Embedding Space – Fusing Analogical and Ontology-based Reasoning for Document Subject Tagging (Salfinger et al., SemEval 2025)
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PDF:
https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.314.pdf