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Ontologies
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Abstract
At the US National Library of Medicine we have developed the Unified Medical Language System (UMLS), whose goal it is to provide integrated access to a large number of biomedical resources by unifying the vocabularies that are used to access those resources. The UMLS currently inter-relates some 60 controlled vocabularies in the biomedical domain. The UMLS coverage is quite extensive, including not only many concepts in clinical medicine, but also a large number of concepts applicable to the broad domain of the life sciences. In order to provide an overarching conceptual framework for all UMLS concepts, we developed an upper-level ontology, called the UMLS semantic network. The semantic network, through its 134 semantic types, provides a consistent categorization of all concepts represented in the UMLS. The 54 links between the semantic types provide the structure for the network and represent important relationships in the biomedical domain. Because of the growing number of information resources that contain genetic information, the UMLS coverage in this area is being expanded. We recently integrated the taxonomy of organisms developed by the NLM's National Center for Biotechnology Information, and we are currently working together with the developers of the Gene Ontology to integrate this resource, as well. As additional, standard, ontologies become publicly available, we expect to integrate these into the UMLS construct.
Description
The Semantic Network consists of (1) a set of broad subject categories, or Semantic Types, that provide a consistent categorization of all concepts represented in the UMLS Metathesaurus, and (2) a set of useful and important relationships, or Semantic Relations, that exist between Semantic Types. This section of the documentation provides an overview of the Semantic Network, and describes the files of the Semantic Network. Sample records illustrate structure and content of these files.
Initial created on
January 18, 2025.
For additional information, contact
Olivier Bodenreider (olivier@nlm.nih.gov) and Agroportal (agroportal-support@lirmm.fr).
Languages
Keywords and classes
Metrics
FAIR score
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Ontology relations network
Submissions
Version
|
Modified | Submitted |
Actions
|
|---|---|---|---|
12 (2022AA) |
November 1, 2021 | January 18, 2025 | |
12 (2022AA) |
November 1, 2021 | August 30, 2024 | |
12 (2022AA) |
November 1, 2021 | July 5, 2022 | |
12 (2021AB) |
November 1, 2021 | January 26, 2022 | |
12 (2015AA) |
June 18, 2015 |
Identifiers
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AgroPortal URI
Dates
Creation date
January 18, 2025
Submission date
January 18, 2025
Modification date
November 1, 2021
Persons and organizations
Contact
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Source
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Methodology and provenance
The fields Knowledge representation paradigm, Engineering methodology, Created with, Accrual method, Accrual periodicity... are empty
Community
Notes
No change inn v12, since 2015AA.Content