Towards the Paradigm of an Ontology--Based
User Interface: from Simple Knowledge Maps to Graphical Query Language
Dr.
Computer Science Dept. and
Gund Institute for
Ecological Economics,
Date:
Time:
Location: 367 Votey
Abstract
Ontologies and conceptual models are useful for
semantic annotation of data and for providing an integrated view of
heterogeneous data sources. The increasing usage of ontologies in semantically
driven data integration makes the idea of an ontology-based user interface
desirable. Recognizing the necessity of providing intuitive graphical metaphors
to simplify the interaction between the user and the ontology formalism, we
have developed GrOWL, a graphic framework for visualization, browsing and
editing of OWL ontologies. This presentation describes GrOWL-Query -the visual query
language based on GrOWL. The discussion will be focused on formal
semantics and analysis of expressive power of GrOWL-Query.