Benledghem, Rafika2015-10-132015-10-132015-10-13https://dspace.univ-tlemcen.dz/handle/112/8121Due to the increasing number of information sources available and distributed and heterogeneous character of these sources, Ontology has become an important action in several areas, and a very important and unavoidable problem for interoperability semantic between elements of ontologies. The mapping aims to provide solutions to this problem by the introduction of systems, taking into two heterogeneous ontologies, automatically discovering the semantic links between elements of these ontologiesfrOntologie, Alignement d’ontologies, mesures de similaritéThesis