From Semantic Web Technologies
Knowledge Representation and Reasoning for the Semantic Web – OWL 2 Rules
a tutorial at KI 2009, Paderborn, Germany, September 15 2009, 9:00–12:30 a.m.
Speakers: Pascal Hitzler, Markus Krötzsch, Sebastian Rudolph
Abstract
The revision 2 of the Web Ontology Language OWL is much richer than its predecessor OWL 1.0 with respect to modelling with rules. In particular, a significant amount of rules – meaning first-order rules in the sense of the Semantic web Rule Language SWRL – can be expressed directly in OWL 2 DL. Further rules lying outside OWL 2 DL, in particular a generalization of DL-safe datalog rules, can be added while still retaining decidability and/or tractability.
This tutorial introduces the upcoming OWL 2 knowledge representation language (expected to become a W3C standard by end 2009), and relevant rules fragments and extensions in detail. It is aimed for the theoretician as well as the ontology engineer who would like to learn about the intimate relationship between OWL 2 and rules.
Slides
In this course, we focus on logical aspects of OWL and rules, using description logic syntax for introducing OWL 2. Readers who prefer a more RDF-centric view can find materials with alternative introductions to OWL 2 on our slides page.
- Part 1: Introduction to OWL 2 (PDF)
- Part 2: Rules for OWL (PDF)
References
- Pascal Hitzler, Markus Krötzsch, Bijan Parsia, Peter Patel-Schneider, Sebastian Rudolph, OWL 2 Web Ontology Language: Primer. W3C Working Draft 11 June 2009. Latest version.
- Pascal Hitzler, Markus Krötzsch, Sebastian Rudolph, Foundations of Semantic Web Technologies. Chapman & Hall / CRC Textbooks in Computing, 2009.
- Pascal Hitzler, Markus Krötzsch, Sebastian Rudolph, Description Logic Rules. In Malik Ghallab, Constantine D. Spyropoulos, Nikos Fakotakis, Nikos Avouris, eds.: Proceedings of the 18th European Conference on Artificial Intelligence (ECAI-08), pp. 80–84. IOS Press 2008.
- Pascal Hitzler, Markus Krötzsch, Sebastian Rudolph, ELP: Tractable Rules for OWL 2. In Amit Sheth, Steffen Staab, Mike Dean, Massimo Paolucci, Diana Maynard, Timothy Finin, Krishnaprasad Thirunarayan, eds.: Proceedings of the 7th International Semantic Web Conference (ISWC-08), pp. 649–664. Springer 2008.
- Pascal Hitzler, Markus Krötzsch, Sebastian Rudolph, York Sure, Semantic Web – Grundlagen. Springer, 2008.
- Boris Motik, Bernardo Cuenca Grau,Ian Horrocks, Zhe Wu, Achille Fokoue, Carsten Lutz, OWL 2 Web Ontology Language: Profiles. W3C Candidate Recommendation 11 June 2009. Latest version.
- W3C OWL Working Group, OWL 2 Web Ontology Language: Document Overview. W3C Working Draft 11 June 2009. Latest version.
Speaker Biographies
PD Dr. Pascal Hitzler is assistant professor at the Kno.e.sis Center, College of Engineering and Computer Science at Wright State University, Dayton, Ohio, USA. His research interests comprise Semantic Web, neural-symbolic integration, knowledge representation and reasoning, and mathematical foundations of artificial intelligence. For further information please see http://www.pascal-hitzler.de.
M.Sc. Markus Krötzsch is a researcher at the University of Karlsruhe (TH), Germany, where he is currently working on his PhD thesis. His research interests involve knowledge representation on the Semantic Web, the logical foundations thereof, and the efficient processing of such knowledge. He is also the lead developer of Semantic MediaWiki and maintainer of the semanticweb.org community platform. Fur further information, please see http://korrekt.org.
Dr. Sebastian Rudolph is assistant professor at the University of Karlsruhe (TH), Germany. His research interests include knowledge specification and reasoning, logic, algebra, complexity theory as well as semantic search and NLP aspects of knowledge acquisition. He is program chair of the International Conference on Conceptual Structures 2009 and of the International Conference on Formal Concept Analysis 2009. For further information, please see http://www.sebastian-rudolph.de.
