Learning of OWL Class Descriptions on Very Large Knowledge Bases

Sebastian Hellmann, Jens Lehmann and Sören Auer
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Sebastian Hellmann: Universität Leipzig, Germany
Jens Lehmann: Universität Leipzig, Germany
Sören Auer: Universität Leipzig, Germany

International Journal on Semantic Web and Information Systems (IJSWIS), 2009, vol. 5, issue 2, 25-48

Abstract: The vision of the Semantic Web is to make use of semantic representations on the largest possible scale - the Web. Large knowledge bases such as DBpedia, OpenCyc, GovTrack, and others are emerging and are freely available as Linked Data and SPARQL endpoints. Exploring and analysing such knowledge bases is a significant hurdle for Semantic Web research and practice. As one possible direction for tackling this problem, the authors present an approach for obtaining complex class descriptions from objects in knowledge bases by using Machine Learning techniques. They describe in detail how we leverage existing techniques to achieve scalability on large knowledge bases available as SPARQL endpoints or Linked Data. Their algorithms are made available in the open source DL-Learner project and we present several real-life scenarios in which they can be used by Semantic Web applications.

Date: 2009
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