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        <title>Team MonoLink at the ALTA Shared Task 2025: Synonym-Aware Retrieval with Guideline-Aware Re-Ranking for MedDRA Normalization</title>
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            <namePart type="given">Jonathan</namePart>
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    <abstract>We describe Team MonoLink’s system for the ALTA 2025 Shared Task on normalizing patient-authored adverse drug event (ADE) mentions to MedDRA Lowest Level Terms (LLTs). Our pipeline combines recall-oriented, synonym-augmented candidate retrieval with cross-encoder re-ranking and a guideline-aware LLM discriminator. On the official hidden test set, our submission tied for first place, achieving an Accuracy@1 of 39.8%, Accuracy@5 of 78.3%, and Accuracy@10 of 85.5%.</abstract>
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%0 Conference Proceedings
%T Team MonoLink at the ALTA Shared Task 2025: Synonym-Aware Retrieval with Guideline-Aware Re-Ranking for MedDRA Normalization
%A Douglas, James C.
%Y Kummerfeld, Jonathan K.
%Y Joshi, Aditya
%Y Dras, Mark
%S Proceedings of the 23rd Annual Workshop of the Australasian Language Technology Association
%D 2025
%8 November
%I Association for Computational Linguistics
%C Sydney, Australia
%@ 1834-7037
%F douglas-2025-team
%X We describe Team MonoLink’s system for the ALTA 2025 Shared Task on normalizing patient-authored adverse drug event (ADE) mentions to MedDRA Lowest Level Terms (LLTs). Our pipeline combines recall-oriented, synonym-augmented candidate retrieval with cross-encoder re-ranking and a guideline-aware LLM discriminator. On the official hidden test set, our submission tied for first place, achieving an Accuracy@1 of 39.8%, Accuracy@5 of 78.3%, and Accuracy@10 of 85.5%.
%U https://aclanthology.org/2025.alta-main.15/
%P 208-215

Markdown (Informal)

[Team MonoLink at the ALTA Shared Task 2025: Synonym-Aware Retrieval with Guideline-Aware Re-Ranking for MedDRA Normalization](https://aclanthology.org/2025.alta-main.15/) (Douglas, ALTA 2025)

• Team MonoLink at the ALTA Shared Task 2025: Synonym-Aware Retrieval with Guideline-Aware Re-Ranking for MedDRA Normalization (Douglas, ALTA 2025)

ACL

• James C. Douglas. 2025. Team MonoLink at the ALTA Shared Task 2025: Synonym-Aware Retrieval with Guideline-Aware Re-Ranking for MedDRA Normalization. In Proceedings of the 23rd Annual Workshop of the Australasian Language Technology Association, pages 208–215, Sydney, Australia. Association for Computational Linguistics.