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 Ontologies as Conceptual Models for XML Documents
Paper presented at 12th Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW'99), Banff, Canada, October 1999. Access to XML-based documents currently relies on query languages that are closely tied to the document structures, i.e. when looking for information one has to be aware of this structure and cannot easily specify the information needs conceptually. Our approach uses ontologies to access sets of distributed XML documents on a conceptual level. We integrate conceptual modeling, inheritance, and inference mechanisms on the one hand with the popularity, simplicity, and flexibility of XML on the other hand. We present an approach that defines the relationship between a given ontology and a document type definition (DTD) for classes of XML documents. Thus, we are able to supplement syntactical access to XML documents by conceptual, i.e. real semantic access.  | This paper describes the use of ontologies to drive the production of DTDs to allow the XML document syntax to reflect an established complex knowledge structure, rather than trying to interpret a knowledge structure from an overly complex document structure. It does not address many issues of schema, e.g. representation of constraints, but it does address the issue of attaching semantics to a document type. |  |
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