Exploiting the UMLS Metathesaurus in the Ontology Alignment Evaluation Initiative

Abstract. In this paper we describe how the UMLS Metathesaurus—the most comprehensive effort for integrating medical thesauri and ontologies—is being used within the context of the Ontology Alignment Evaluation Initiative (OAEI). We also present the obtained results in the Large BioMed track of the OAEI 2011.5 campaign where the reference alignments are based on UMLS. Finally, we propose a new reference alignment based on the harmonisation of the outputs of the systems participating in the OAEI Large BioMed track.