GLiNER-BioMed: A Suite of Efficient Models for Open Biomedical Named Entity Recognition

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ID: 314824
2026
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Abstract
MOTIVATION: Biomedical named entity recognition (NER) presents unique challenges due to specialized vocabularies, the sheer volume of entities, and the continuous emergence of novel entities. Traditional NER models, constrained by fixed taxonomies and human annotations, struggle to generalize beyond predefined entity types. RESULTS: To address these issues, we introduce GLiNER-BioMed, a domain-adapted suite of GLiNER models for biomedicine. Our approach first distills the annotation capabilities of large language models (LLMs) into a smaller, more efficient model, enabling the generation of high-coverage biomedical NER data. We subsequently train two GLiNER architectures, uni- and bi-encoder, at multiple scales to balance computational efficiency and performance. Experiments on eight biomedical datasets demonstrate that GLiNER-BioMed achieved state-of-the-art zero-shot performance (micro-F1 59.77%), exceeding the strongest baseline by 5.96 points (p < 0.001). In few-shot learning, the bi-encoder variant reached 70.39% (10-shot), consistently outperforming the strongest baseline across all settings (p < 0.05). Our findings show that the uni-encoder GLiNER-BioMed achieves the strongest zero-shot performance, while the bi-encoder offers superior few-shot gains and substantially higher inference throughput (+39-568%), making it well-suited to annotation-limited, latency-sensitive, or large-label-space settings. Ablation studies further indicate that combining synthetic biomedical pre-training with general-domain post-training is essential for capturing domain-specific knowledge while maintaining precision-recall balance. AVAILABILITY AND IMPLEMENTATION: The source code, datasets, and models are publicly available at https://github.com/ds4dh/GLiNER-biomed. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.
Reference Key
openalex_W4415320068 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Anthony Yazdani, Ihor Stepanov, Douglas Teodoro
Journal BMC Bioinformatics
Year 2026
DOI
10.1093/bioinformatics/btag322
URL
https://doi.org/10.1093/bioinformatics/btag322
Keywords Keywords not found

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