Measuring semantic similarity within reference ontologies to improve ontology alignment
Valerie V. Cross, Pramit Silwal · 2012
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 MST = {(s, t, mapSimSR * mapSimTR) | s�OS, bS, bT �OR, t�OT: �(s,bS,mapSimSR,)�MSR ���(t,bT,mapSimTR,)�MTR ��bS=bT} MSR contains mapping from the source OS to the reference OR using BSM lex matcher and similarly for MTR with OT. US contains source concepts s from MSR, which are not selected by the original MM and similarly UT for the target concepts t. US = {s | s�OS: �(s, bS, mapSimSI)�MSI ��� ∄ t�OT: (s, t, simST)�MST} For each (s, t) in US x UT, semantic similarity between all their bS and bT are calculated, and the maximum is used in determining the enhanced mapping set as