Measuring semantic similarity within reference ontologies to improve ontology alignment

Some ontology alignment (OA) systems find an identical bridge concept in a reference ontology to which both the source and target concept can be mapped. Then a mapping between the two is produced. Using semantic similarity within a reference ontology can find more mappings than with only identical bridge concepts. A wide variety of semantic similarity measures were implemented within AgreementMaker [1] to use semantic similarity to evaluate OA mappings [2]. Initial results of enhancing AgreementMaker with a new matcher, the mediating matcher with semantic similarity (MMSS) in place of its mediating matcher (MM) are in [3]. Briefly, the MMSS uses the MM to first produce a set of mappings MST between source and target concepts with an exact match on the bridge concepts, i.e., bS = bT as