OLA in the OAEI 2007 Evaluation Contest

Abstract. Similarity has become a classical tool for ontology confrontation motivated by alignment, mapping or merging purposes. In the definition of an ontologybased measure one has the choice between covering a single facet (e.g., URIs, labels, instances of an entity, etc.), covering all of the facets or just a subset thereof. In our matching tool, OLA, we had opted for an integrated approach towards similarity, i.e., calculation of a unique score for all candidate pairs based on an aggregation of all facet-wise comparison results. Such a choice further requires effective means for the establishment of importance ratios for facets, or weights, as well as for extracting an alignment out of the ultimate similarity matrix. In previous editions of the competition OLA has relied on a graph representation of the ontologies to align, OL-graphs, that reflected faithfully the syntactic structure of the OWL descriptions. A pair of OL-graphs was exploited to form and solve a system of equatio...

• Type: Conference
• Year: 2007
• Where: SEMWEB
• Authors: Jean François Djoufak Kengue, Jérôme Euzenat, Petko Valtchev
• Keywords: Graph Representation, Homogeneous Graph Representation, SEMWEB 2007, Ultimate Similarity Matrix