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Contributions
This is a relatively recent project which is under a year old. However, we have
already made several contributions.
- We developed a formal definition of an ontology that is rich enough to capture most existing ontology definitions.
- We developed the concept of an ontology extended relation. Intuitively, OERs extending the relational model of data by associating an ontology with a relation.
- We developed an extension of the relational algebra to handle ontology extended relations. Using this algebra, users can pose queries to OERs and have a reasonable assurance that semantically correct answers will be returned.
- We have developed algorithms to automatically build ontologies (or infer ontologies) from legacy relational and XML data sources.
- We are developing an extension of the OER algebra to apply to XML data sources and to video data sources.
- We are building a system called HOME that implements these concepts.
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