Proposition of a method for assessing similarity between two ontologies

This paper presents a new method for assessing similarity between two ontologies. There are many works on similiarity between concepts in an ontology, but not many works on similarity between ontologies. This method is based on set theory, edges and feature similarity. We first determine set of concepts that is shared by two ontologies and sets of concepts that are different from them. Then, we assess the average value of similarity for each set by using edges based semantic similarity. Finally, we compute similarity between ontologies by using averages values of each set and by using also feature-based similarity measure.