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Team Fusion@ SU@ BC8 SympTEMIST track: transformer-based approach for symptom recognition and linking

2026-04-07 20:00:59
Georgi Grazhdanski, Sylvia Vassileva, Ivan Koychev, Svetla Boytcheva
arXiv_AI
           
Abstract

This paper presents a transformer-based approach to solving the SympTEMIST named entity recognition (NER) and entity linking (EL) tasks. For NER, we fine-tune a RoBERTa-based (1) token-level classifier with BiLSTM and CRF layers on an augmented train set. Entity linking is performed by generating candidates using the cross-lingual SapBERT XLMR-Large (2), and calculating cosine similarity against a knowledge base. The choice of knowledge base proves to have the highest impact on model accuracy.

Abstract (translated)

URL

https://arxiv.org/abs/2604.06424

PDF

https://arxiv.org/pdf/2604.06424.pdf

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