Schema-Agnostic Query Rewriting in SPARQL 1.1

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Schema-Agnostic Query Rewriting in SPARQL 1.1

Stefan BischofStefan Bischof,  Markus KrötzschMarkus Krötzsch,  Axel PolleresAxel Polleres,  Sebastian RudolphSebastian Rudolph
Schema-Agnostic Query Rewriting in SPARQL 1.1

Slides: Schema-Agnostic Query Rewriting in SPARQL 1.1

Stefan Bischof, Markus Krötzsch, Axel Polleres, Sebastian Rudolph
Schema-Agnostic Query Rewriting in SPARQL 1.1
In Peter Mika, Tania Tudorache, Abraham Bernstein, Chris Welty, Craig A. Knoblock, Denny Vrandečić, Paul T. Groth, Natasha F. Noy, Krzysztof Janowicz, Carole A. Goble, eds., Proc. 13th International Semantic Web Conference (ISWC'14), volume 8796 of LNCS, 584-600, October 2014. Springer
  • KurzfassungAbstract
    SPARQL 1.1 supports the use of ontologies to enrich query results with logical entailments, and OWL 2 provides a dedicated fragment OWL QL for this purpose. Typical implementations use the OWL QL schema to rewrite a conjunctive query into an equivalent set of queries, to be answered against the non-schema part of the data. With the adoption of the recent SPARQL 1.1 standard, however, RDF databases are capable of answering much more expressive queries directly, and we ask how this can be exploited in query rewriting. We find that SPARQL 1.1 is powerful enough to "implement" a full-fledged OWL QL reasoner in a single query. Using additional SPARQL 1.1 features, we develop a new method of schema-agnostic query rewriting, where arbitrary conjunctive queries over OWL QL are rewritten into equivalent SPARQL 1.1 queries in a way that is fully independent of the actual schema. This allows us to query RDF data under OWL QL entailment without extracting or preprocessing OWL axioms.
  • Weitere Informationen unter:Further Information: Link
  • Projekt:Project: DIAMOND
  • Forschungsgruppe:Research Group: Computational LogicComputational LogicWissensbasierte SystemeKnowledge-Based Systems
The final publication is available at Springer via
  author    = {Stefan Bischof and Markus Kr{\"{o}}tzsch and Axel Polleres and
               Sebastian Rudolph},
  title     = {Schema-Agnostic Query Rewriting in {SPARQL} 1.1},
  editor    = {Peter Mika and Tania Tudorache and Abraham Bernstein and Chris
               Welty and Craig A. Knoblock and Denny Vrande{\v{c}}i{\'{c}} and
               Paul T. Groth and Natasha F. Noy and Krzysztof Janowicz and
               Carole A. Goble},
  booktitle = {Proc. 13th International Semantic Web Conference (ISWC'14)},
  series    = {LNCS},
  volume    = {8796},
  publisher = {Springer},
  year      = {2014},
  month     = {October},
  pages     = {584-600},
  doi       = {10.1007/978-3-319-11964-9_37}