BioELX: Cross-lingual Biomedical Entity Linking via Alias-based Retrieval and LLM Ranking
Researchers introduce BioELX, a two-stage cross-lingual biomedical entity linking system that maps medical mentions across languages to knowledge base identifiers without requiring task-specific training data. The framework combines multilingual alias-enriched retrieval with LLM-based ranking, achieving state-of-the-art results across five benchmarks with substantial improvements for low-resource languages.