How We Classified 38.6M PubMed Records: Hybrid NLP Pipelines vs LLMs
A comparison of two approaches to large scale biomedical literature classification: LLM based classification and a hybrid architecture combining named entity recognition, ontology embeddings, and disease normalization. Using 38.6 million PubMed records, we evaluated throughput, cost, ontology alignment, and traceability, finding that hybrid pipelines remain the more practical choice for production scale, ontology driven systems.