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A Graph-Oriented Model for Articulation of Ontology Interdependencies

Mitra, P and Kersten, M. and Wiederhold, G. (2000) A Graph-Oriented Model for Articulation of Ontology Interdependencies. Technical Report. Stanford InfoLab. (Publication Note: 7th International Conference on Extending Database Technology (EDBT 2000), Konstanz, Germany, March 27-31, 2000)




Ontologies are knowledge structures to explicate the contents, essential properties, and relationships between terms in a knowledge source. Many sources are now accessible with associated ontologies. Most prior work on use of ontologies relies on the construction of a single global ontology covering all sources. Such an approach is not scalable and maintainable especially when the sources change frequently. We propose a scalable and easily maintainable approach based on the interoperation of on tologies. To handle user queries crossing the boundaries of the underlying information systems, the interoperation between the ontologies should be precisely defined. Our approach is to use rules that cross the semantic gap by creating an articulation or linkage between the systems. The rules are generated using a semi-automatic articulation tool with the help of a domain expert. To make the ontologies amenable for automatic composition based on the accumulated knowledge rules, we represent them using a graph-oriented model extended with a small algebraic operator set. ONION, a user-friendly toolkit, aids the experts in bridging the semantic gap in real-life settings. Our framework provides a sound foundation to simplify the work of domain experts, enables integration with public semantic dictionaries, like Wordnet, and will derive ODMG-compliant mediators automatically.

Item Type:Techreport (Technical Report)
Uncontrolled Keywords:Interoperability
Subjects:Computer Science > Data Integration and Mediation
Related URLs:Project Homepage
ID Code:442
Deposited By:Import Account
Deposited On:22 Mar 2000 16:00
Last Modified:27 Dec 2008 15:12

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