Users are responsible for compliance with the
UMLS copyright restrictions.
Announcement: Wednesday, September 24, 2008
We are happy to announce the release of the MetaMap
program to the public. Technology has finally allowed us to
release the same binary for MetaMap that we use internally.
For more information, please visit our new MetaMap
Wednesday, September 12, 2007: Availability of our new Java-based
API to the SKR Scheduler facility. The SKR API was created to
provide users with the ability to programmatically submit jobs
to the Scheduler Batch and Interactive facilities instead of
using our web-based interfaces. We have tried to reproduce
full functionality for all of the programs under the Scheduler
umbrella. For more information, please visit our
To use this application, you must have signed the
agreement. The UMLS agreement requires those who use the
to file a brief report once a year to summarize their use of the UMLS.
It also requires the acknowledgment that the UMLS contains copyrighted
material and that those
restrictions be respected. The UMLS
agreement requires users to agree to obtain agreements for EACH
copyrighted source prior to it's use within a commercial or production
[ Use of all the sources is permitted if the application
is used for research purposes only. ]
To access either the
Interactive Mode or
Batch Mode facilities, you
must have access to a UMLSKS account. For more information
about how we use UMLSKS authentication data, or for information
on how to set up a UMLSKS account, please select the Info
icon to the right:
We only update our authentication list once a day at
0200 Eastern Standard Time. If you have only recently received an
UMLSKS account it may not yet be included here.
The Semantic Knowledge Representation (SKR) Project was recently initiated at NLM in order to develop programs to provide usable semantic representation of biomedical free text by building on resources currently available at the library.
Access to biomedical information depends on reliable representation of the knowledge contained in text. For significant advances to be achieved a richer representation will be required than is currently available. As an example of the type of enhanced representation we are proposing, (2) contains the semantic propositions which represent some of
the information contained in the text in (1).
We used hemofiltration to treat a patient with digoxin overdose
that was complicated by refractory hyperkalemia.
Digoxin overdose (disorder)-OCCURS_IN-Patients
Hyperkalemia-COMPLICATES-Digoxin overdose (disorder)
Hemofiltration-TREATS(INFER)-Digoxin overdose (disorder)
Generated via "-S" option (SemRep Output) with
the MetaMap program using the 2004 Knowledge Source.
Each of the propositions in (2) is a predication whose predicate (in uppercase) is a relation from the UMLS Semantic Network. Each of the arguments is a concept from the UMLS Metathesaurus. The set of propositions in (2) considered as the semantic representation of (1) is not complete; however, it represents the major relationships and concepts contained in the text.
In-House Technologies Used:
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