Method for automatic management of the semantic network ambiguity in the UMLS possible application.doc

Method for Automatic Management of the work Ambiguity in the UMLS : Possible Application for Information Retrieval on the Web
Vincent Mary, Franck Le Duff, Fleur Mougin and Pierre Le Beux
Medical Informatics Laboratory, 2, rue du Pr. Léon Bernard 35000 RENNES, FRANCE
Abstract
The Unified Medical Language System (UMLS) is an extensive collection of terms and concepts. The UMLS includes biomedical terms from standard classifications. The work (SN) links the concepts, sometimes ambiguously. In this paper we try, on one hand to describe the relationship between concepts more efficiently and on the other hand to find new relationships. Assuming that re-usability and automatic extraction of knowledge from existing thesaurus enables an improvement of the metathesaurus, we cross the SN with linked concepts from the ADM (Assisted Medical Diagnosis)M. Results are presented and our discussion concerns firstly the use of the SN only; secondly the improvement that allows pre-selection of linked concepts, and thirdly the possibility to coincide with other developments that improve the metathesaurus.
Keywords:
work, UMLS, ADM, Metathesaurus Improvement.
1. Introduction
McCray [1] reminds us thatT the work of the Unified Medical Language System (UMLS)[12] plexity by grouping concepts according to the semantic types (ST) that have been assigned to them. More than plexity, the SN ca