SMI: Ontology-Grounded Semantic IDs for Hierarchy-Aware Medical Concept Representation
Biomedical language models (LMs) provide strong representations for clinical tasks, but they often fail to capture the hierarchical structure among medical concepts. This limitation is especially pronounced for rare and fine-grained clinical codes in long-tailed vocabularies, where hierarchy-agnostic LM representations...
Zi-Yang Song, Li Shen, Yi-Xuan Li et al.
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