GraphOnto: OWL-Based Ontology Management and Multimedia Annotation in the DS-MIRF Framework
Panagiotis Polydoros, Chrisa Tsinaraki, Stavros Christodoulakis · 2006
Abstract. We 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 sys-tem 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 ontolo-gies 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 stan-dardized 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 applica-tion, 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 stor-age. GraphOnto has been evaluated against Protégé and clearly outperforms it. 1.