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The FAQs are provided by the Vocabulary Knowledge Center.
What is the difference between the
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NCI Metathesaurus and the
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NCI Thesaurus?
The vocabularies are different in a number of areas including origins, format, license, and coverage. To see all the differences look at this comparison.
What are the changes in terms of licensing when downloading the NCI
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Metathesaurus?
The NCI EVS project makes the NCI Metathesaurus available for download in RRF format, along with the supporting files needed to load this in UMLS's MetamorphoSys, through the download center. Some of the vocabularies within the NCI Metathesaurus are subject to license restrictions, so all users who wish to download these files must have a license from the UMLS and provide their credentials before downloading. For those users who download the NCI Metathesaurus from the NCI EVS download site, the procedure for submitting license information has changed.
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NCI EVS has no control of the actual username or password and does not have the ability to create UMLS accounts. The account and license is free and available from NLM.
Other questions
If your question was not answered on this page, please start a new thread in the Vocabulary Knowledge Center forum for this terminologycontact NCIMetathesaurus@mail.nih.gov.
