SemDiff: An approach to detecting semantic changes to ontologies

Research output: Contribution to journalArticle

8 Scopus citations


Ontologies evolve over time at both structural and semantic levels. Detecting semantic changes to ontologies is essential to the functioning of data instances and dependent ontologies over the semantic Web. In this article, we propose a SemDiff approach to examining structural changes and deriving both explicit and implicit semantic changes between ontology versions. Our approach exploits the semantic dependency between properties and concepts: we introduce the notion of isosems, and conduct implication analysis to examine whether, when, and how semantic changes to an isosem imply semantic changes to other isosems. A prototype of our approach is implemented.

Original languageEnglish (US)
Pages (from-to)1-32
Number of pages32
JournalInternational Journal on Semantic Web and Information Systems
Issue number4
StatePublished - Jan 1 2006

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications


  • Implication
  • Ontologies
  • Semantic changes
  • Semantic web

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