2004 UC Proceedings Abstract
 GEON: Ontology-Enabled Map Integration Track: New Technology and System Integration Author(s): Kai Lin, Bertram Ludaescher In the GEON project we are developing an interoperability system on top of ArcIMS for registering spatial data sets to ontologies and subsequently querying registered data sets through the ontologies for map rendering. The system consists of an ontology repository, a data set registration procedure, and a query rewriting system. User-defined ontologies are imported as OWL files and saved in the ontology repository. Structural and semantic heterogeneities of data sources are resolved using information from the data set registration procedure and ontology information. Those are used when rewriting user queries (e.g., a geologic age or rock type will expand to its corresponding "sub-concepts" in the rewritten query). Multiple ontologies are supported in the system by allowing users to define a morphism between two ontologies which equates some concepts in the source ontology to some concepts in the target ontology. Users are able to switch between ontologies for which an ontology morphism exists. Kai Lin San Diego Supercomputer Center Data and Knowledge Systems 9500 Gilman Drive, MC 0505 La Jolla , CA 92093 US Phone: 858 822 3649 E-mail: klin@sdsc.edu Bertram Ludaescher San Diego Supercomputer Center Data and Knowledge Systems 9500 Gilman Drive, MC 0505 La Jolla , CA 92093 US Phone: 858 822 0864 E-mail: ludaesch@sdsc.edu |
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