01751nas a2200205   4500008004100000245009600041210006900137260000900206300001400215490000600229520107200235653001101307653001301318653002301331653001401354100001801368700001801386700002401404856011701428       2006                        eng d00aGraphOnto: OWL-based ontology management and multimedia annotation in the DS-MIRF framework0 aGraphOnto OWLbased ontology management and multimedia annotation  c2006  a214 - 2190 v43 aWe present here GraphOnto, a software component and an API that allow the definition and editing of both standard-based and domain OWL ontologies and their use in multimedia information system components. In our working environment an OWL Upper Ontology that captures the MPEG-7 MDS is utilized and OWL domain ontologies extend the upper ontology with domain knowledge. The ontologies imported in GraphOnto are parsed so that graphical ontology browsing and editing interfaces are automatically generated. The ontologies are used to guide the semantic multimedia annotation in a standardized manner. OWL Ontology mappings, expressed using OWL constructs, are supported and allow the definition of personalized ontologies. Personalization of the GraphOnto user interface on the application, task and user levels is provided. In addition, GraphOnto interoperates with an MPEG-7 Repository both for semantic entity reuse during multimedia content annotation and for semantic description storage. GraphOnto has been evaluated against Protégé and clearly outperforms it.10aMPEG 710aOntology10aOntology standards10aSemantics1 aPolydoros, P.1 aTsinaraki, C.1 aChristodoulakis, S.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33845937025&partnerID=40&md5=b72758db21f6febb306c3712ffb375fb