Proceedings of the 2010 International Conference on Semantic Web & Web Services, Las Vegas, NV (2010)
Defining semantic classes in terms of the properties of their members is a useful technique in semantic search because such classes are self-maintaining—if new items with the required properties appear, they automatically become members of the class. These self-maintaining classes can be organized independently of the primary subsumption hierarchies to match queries that may not line up well with the ontology, producing a technique loosely analogous to database “views.” An Air Force-motivated case study is presented where queries for threats to air operations are matched even though the weapons taxonomy does not contain classes that distinguish threats from non-threats. Class expressions are defined that match weapon properties such as “fires air-to-air missiles,” or “fires surface-to-air missiles.” The resulting threat classes are self-maintaining since new weapons—or old weapons with new properties—are added to the classes automatically.
For More Information
(Please include your name, address, organization, and the paper reference. Requests without this information will not be honored.)