UMLS Knowledge Sources: File Downloads

• Download and extract all UMLS data and zip files to the same directory.
• Read the README file before downloading, which includes information on installing the UMLS Knowledge Sources and highlights changes for this release.
• Additional documentation is available at http://www.nlm.nih.gov/research/umls.
• At 1M bits/second, it will take approximately 4 hours to download the complete UMLS release. Downloading is advised only if you have a very fast Internet connection.
• This release is also available on DVD. To order, send an email to custserv@nlm.nih.gov. Be sure to include your license number.
• Each UMLS release includes MetamorphoSys, required to install Knowledge Sources files, and to create, search and browse customized Metathesaurus subsets. MetamorphoSys requires a minimum of 20 GB of free hard disk and takes 2-10 hours to run on a range of platforms tested. The actual time will depend on your configuration, hardware and operating system platforms.

Last reviewed: 30 April 2009
Last updated: 30 April 2009
First published: 12 January 2009
Metadata| Permanence level: Permanence Not Guaranteed