Description Logic Rules

TitleDescription Logic Rules
Publication TypeConference Paper
Year of Publication2008
AuthorsSebastian Rudolph, Markus Krotzsch, Pascal Hitzler
Conference Name18th European Conference on Artificial Intelligence, ECAI
Date Published07/2008
Conference LocationPatras, Greece

We introduce description logic (DL) rules as a new rule-based formalism for knowledge representation in DLs. As a fragment of the Semantic Web Rule Language SWRL, DL rules allow for a tight integration with DL knowledge bases. In contrast to SWRL, however, the combination of DL rules with expressive description logics remains decidable, and we show that the DL SROIQ - the basis for the ongoing standardisation of OWL 2 - can completely internalise DL rules. On the other hand, DL rules capture many expressive features of SROIQ that are not available in simpler DLs yet. While reasoning in SROIQ is highly intractable, it turns out that DL rules can be introduced to various lightweight DLs without increasing their worst-case complexity. In particular, DL rules enable us to significantly extend the tractable DLs EL++ and DLP.

Full Text

Markus Krotzsch, Sebastian Rudolph, Pascal Hitzler,'Description Logic Rules,' Proceedings of the 18th European Conference on Artificial Intelligence, ECAI, Patras, Greece, July 2008, pp. 80-84.