A general datalog-based framework for tractable query answering over ontologies.
In this paper, we introduce a family of expressive extensions of Datalog, called Datalog±, as a new paradigm for query answering over ontologies. The Datalog± family admits existentially quantified variables in rule heads, and has suitable restrictions to ensure highly efficient ontology querying. W...
| Главные авторы: | , , |
|---|---|
| Другие авторы: | |
| Формат: | Journal article |
| Язык: | English |
| Опубликовано: |
ACM
2009
|