SPARQL Evaluations and Extensions (kurz: SEE): Subproject XSPARQL, SPARQL Update & Linked Data

  • Polleres, Axel (PI - Project head)
  • Bischof, Stefan (Researcher)
  • Steyskal, Simon (Researcher)

Project Details


One of the principal achievements of the Semantic Web is to make the information on the meaning of data on the web accessible to machines. This enables the development of tools that support users in finding the relevant data and joining the data from various sources in a meaningful way. To reap the fruits of the Semantic Web, an efficient query mechanism for Semantic Web data and an appropriate way of dealing with the heterogeneity of data on the web are required. The goal of this project is precisely to lay the foundation for an efficient evaluation of queries in the Semantic Web query language SPARQL. To take care of the heterogeneity of data on the web, we will extend our query evaluation techniques to a combined
query language that integrates also features of XQuery - the standard query language for XML data. In order to achieve these goals we will apply and significantly extend well established query optimization techniques from relational databases.

Financing body

Vienna Science and Technology Fund
Effective start/end date1/06/1431/08/15

Collaborative partners

  • Limits of Schema Mappings

    Kolaitis, P., Pichler, R., Sallinger, E. & Savenkov, V., 2018, In: Theory of Computing Systems. 62, 4, p. 899 - 940

    Publication: Scientific journalJournal articlepeer-review

    Open Access
    8 Downloads (Pure)
  • Handling Inconsistencies due to Class Disjointness in SPARQL Updates

    Ahmeti, A., Calvanese, D., Polleres, A. & Savenkov, V., 2016, LNCS: Proceedings of the 13th European Semantic Web Conference (ESWC2016). Harald Sack, Eva Blomqvist, Mathieu d'Aquin, Chiara Ghidini, Simone Paolo Ponzetto, Christoph Lange¿ (ed.). Heraklion, Greece: Springer, p. 387 - 404

    Publication: Chapter in book/Conference proceedingContribution to conference proceedings

  • Collecting, Integrating, Enriching and Republishing Open City Data as Linked Data

    Bischof, S., Martin, C., Polleres, A. & Schneider, P., 1 Oct 2015, Proceedings of the 14th International Semantic Web Conference. Marcelo Arenas, Oscar Corcho, Elena Simperl, Markus Strohmaier, Mathieu d'Aquin, Kavitha Srinivas, Paul T. Groth, Michel Dumontier, Jeff Heflin, Krishnaprasad Thirunarayan, Steffen Staab (ed.). Bethlehem, PA: Springer, Vol. 9367. p. 57 - 75

    Publication: Chapter in book/Conference proceedingContribution to conference proceedings