On Building an Index Advisor for Semantic Web Queries

  • Authors:
  • Lubomir Stanchev;Grant Weddell

  • Affiliations:
  • Indiana University --Purdue University Fort Wayne, USA;University of Waterloo, Canada

  • Venue:
  • Proceedings of the 2010 conference on Formal Ontology in Information Systems: Proceedings of the Sixth International Conference (FOIS 2010)
  • Year:
  • 2010

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Abstract

Current optimization techniques for answering queries over Semantic Web data use realization to precalculate the individuals associated with every concept in the given ontology. However, this technique does not take into account the type of queries, written for example in nRQL or SPARQL-DL, that will arrive at the system. In this paper we propose how this additional knowledge can be used to create query-specific indices. We include experimental results that show how our approach can be used to improve the performance of the Pellet query engine for the popular LUBM benchmark.