These tools will no longer be maintained as of December 31, 2024. Archived webpage can be found here. Indexing Initiative Github repository under development. Contact NLM Customer Service if you have questions.

Featured Tools

Medical Text Indexer (MTI)

The NLM Medical Text Indexer (MTI) combines human NLM Index Section expertise and Natural Language Processing technology to curate the biomedical literature more efficiently and consistently.

MetaMap

MetaMap is a highly configurable program developed to map biomedical text to the UMLS Metathesaurus or, equivalently, to discover Metathesaurus concepts referred to in text. MetaMap uses a knowledge-intensive approach based on symbolic, natural-language processing (NLP) and computational-linguistic techniques.