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Loading from UMLS RRF (Rich Resource Format) Files
The National Library of Medicine (NLM) regularly releases the Unified Medical Language System (UMLS) regularly releases as a set of terminologies in a large set of files referred to as the UMLS Metathesaurus. LexEVS can load the entire set or individual files from this file set using the LexEVS UMLS Batch loader.
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We briefly mention the UMLS Metathesaurus tools on this page. Since all documentation for these are maintained at the website linked to below we will only provide brief pointers.Also, LexEVS has a special purpose RRF loader which loads an NCI version of an entire MetaThesaurus. This is dealt with in the documentation for the NCI loaders and we won't repeat it's use here. |
Step | Action | |||||
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1 | The UML Metathesaurus is controlled by a license from the NLM. You may obtain a free license of the UMLS Metathesaurus on the NLM license site. | |||||
2 | Download and install the UMLS Metathesaurus: | |||||
3 2 | Subset the desired terminology (recommended):
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4 3 | Set command line options in the loading script:
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5 4 | Find the SAB (RSAB) in the MRSAB.RRF file: | |||||
6 5 | Load the Terminology from the command line referencing the SAB.
Note: The file path is pointing to the directory directly above the .RRF files. | |||||
7 6 | Monitor output (optional):
Sample output of an early load step is as follows: |
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