Conceptual and computational models of information retrieval with the UMLS knowledge sources Online publication date: Mon, 10-May-2004
by Michel Joubert, Jean-Jacques Robert, Francois Miton, Laurent Nal, Marius Fieschi
International Journal of Healthcare Technology and Management (IJHTM), Vol. 1, No. 3/4, 1999
Abstract: The Unified Medical Language System (UMLS) of the US National Library of Medicine is a complex collection of terms, concepts and relationships derived from standard classifications. Potential applications would benefit from a high level representation of its components. This work proposes a conceptual representation of both the Metathesaurus and the Semantic Network of the UMLS based on conceptual graphs. It shows that the addition of a dictionary of concepts to the UMLS knowledge allows the capability to exploit it pertinently. This dictionary defines more precisely the core concepts and adds constraints on their use. Constraints are dedicated to guide an ''intelligent'' browsing of the UMLS knowledge sources and to build queries to information databases. A computational model of information retrieval based on the UMLS knowledge sources is then proposed.
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