Abstract
We describe an extension of an OWL knowledge base using PostgreSQL, Jena, and Pellet with active rules in form of triggers. The triggers react on atomic events on the OWL level. In contrast to ``simple'' RDF triggers that can directly be mapped on updates on RDF triples, the extension to RDFS and OWL requires to combine reactivity with OWL reasoning. For this, ``direct'', pre-reasoning triggers that react on update operations (often also providing support for the intended operation), and ``indirect'', post-reasoning triggers that react on actual changes have to be distinguished. The approach has been implemented in a prototype based on the Jena framework.

URL:
http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2006-056

BibTeX:

@inproceedings{REWERSE-RP-2006-056,
	author = {Wolfgang May and Franz Schenk and Elke von Lienen},
	title = {Extending an OWL Web Node with Reactive Behavior},
	booktitle = {Proceedings of 4th Workshop on Principles and Practice of Semantic Web Reasoning, Budva, Montenegro (10th--11th June 2006)},
	year = {2006},
	volume = {4187},
	organization = {REWERSE},
	series = {LNCS},
	pages = {134--148},
	url = {http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2006-056}
}