Unified Medical Language System

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A Unified Medical Language System is a lexical database set and a NLP toolkit for the medical domain.



  • http://www.nlm.nih.gov/research/umls/quickstart.html#What_is_the_UMLS
    • The UMLS, or Unified Medical Language System, is a set of files and software that brings together many health and biomedical vocabularies and standards to enable interoperability between computer systems.

      You can use the UMLS to enhance or develop applications, such as electronic health records, classification tools, dictionaries and language translators.

  • http://www.nlm.nih.gov/research/umls/quickstart.html#The_Three_UMLS_Tools
    • The UMLS has three tools, which we call the Knowledge Sources:
    • We use the Semantic Network and Lexical Tools to produce the Metathesaurus. Metathesaurus production involves:
      • Processing the terms and codes using the Lexical Tools
      • Grouping synonymous terms into concepts
      • Categorizing concepts by semantic types from the Semantic Network
      • Incorporating relationships and attributes provided by vocabularies
      • Releasing the data in a common format
    • Although we integrate these tools for Metathesaurus production, you can access them separately or in any combination according to your needs.