Advertisement

Introducing Wikidata to the Linked Data Web

  • Fredo Erxleben
  • Michael Günther
  • Markus Krötzsch
  • Julian Mendez
  • Denny Vrandečić
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8796)

Abstract

Wikidata is the central data management platform of Wikipedia. By the efforts of thousands of volunteers, the project has produced a large, open knowledge base with many interesting applications. The data is highly interlinked and connected to many other datasets, but it is also very rich, complex, and not available in RDF. To address this issue, we introduce new RDF exports that connect Wikidata to the Linked Data Web. We explain the data model of Wikidata and discuss its encoding in RDF. Moreover, we introduce several partial exports that provide more selective or simplified views on the data. This includes a class hierarchy and several other types of ontological axioms that we extract from the site. All datasets we discuss here are freely available online and updated regularly.

Keywords

Link Data Class Hierarchy Query Answering External Dataset Site Link 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bizer, C., Heath, T., Berners-Lee, T.: Linked data: The story so far. Int. J. Semantic Web and Information Systems 5(3), 1–22 (2009)CrossRefGoogle Scholar
  2. 2.
    Bizer, C., Lehmann, J., Kobilarov, G., Auer, S., Becker, C., Cyganiak, R., Hellmann, S.: DBpedia – A crystallization point for the Web of Data. J. Web Semantics 7(3), 154–165 (2009)CrossRefGoogle Scholar
  3. 3.
    Bollacker, K., Evans, C., Paritosh, P., Sturge, T., Taylor, J.: Freebase: A collaboratively created graph database for structuring human knowledge. In: Proc. 2008 ACM SIGMOD Int. Conf. on Management of Data, pp. 1247–1250. ACM (2008)Google Scholar
  4. 4.
    Borgida, A., Serafini, L.: Distributed description logics: Assimilating information from peer sources. J. Data Semantics 1, 153–184 (2003)Google Scholar
  5. 5.
    Bouquet, P., Giunchiglia, F., van Harmelen, F., Serafini, L., Stuckenschmidt, H.: C-OWL: Contextualizing ontologies. In: Fensel, D., Sycara, K., Mylopoulos, J. (eds.) ISWC 2003. LNCS, vol. 2870, pp. 164–179. Springer, Heidelberg (2003)CrossRefGoogle Scholar
  6. 6.
    Brickley, D., Guha, R. (eds.): RDF Schema 1.1. W3C Recommendation (February 25, 2014), http://www.w3.org/TR/rdf-schema/
  7. 7.
    Carothers, G. (ed.): RDF 1.1 N-Quads: A line-based syntax for RDF datasets. W3C Recommendation (February 25, 2014), http://www.w3.org/TR/n-quads/
  8. 8.
    Carroll, J.J., Bizer, C., Hayes, P.J., Stickler, P.: Named graphs. J. Web Semantics 3(4), 247–267 (2005)CrossRefGoogle Scholar
  9. 9.
    Cyganiak, R., Harth, A., Hogan, A.: N-Quads: Extending N-Triples with Context. Public Draft (2012), http://sw.deri.org/2008/07/n-quads/
  10. 10.
    Guha, R.V., McCool, R., Fikes, R.: Contexts for the semantic web. In: McIlraith, S.A., Plexousakis, D., van Harmelen, F. (eds.) ISWC 2004. LNCS, vol. 3298, pp. 32–46. Springer, Heidelberg (2004)CrossRefGoogle Scholar
  11. 11.
    Hoffart, J., Suchanek, F.M., Berberich, K., Weikum, G.: YAGO2: A spatially and temporally enhanced knowledge base from Wikipedia. Artif. Intell., Special Issue on Artificial Intelligence, Wikipedia and Semi-Structured Resources 194, 28–61 (2013)MathSciNetMATHGoogle Scholar
  12. 12.
    Krötzsch, M., Vrandečić, D., Völkel, M., Haller, H., Studer, R.: Semantic Wikipedia. J. Web Semantics 5(4), 251–261 (2007)CrossRefGoogle Scholar
  13. 13.
    Lebo, T., Sahoo, S., McGuinness, D. (eds.): PROV-O: The PROV Ontology. W3C Recommendation (April 30, 2013), http://www.w3.org/TR/prov-o
  14. 14.
    Lenat, D., Guha, R.V.: Building Large Knowledge-Based Systems: Representation and Inference in the Cyc Project. Addison-Wesley (1990)Google Scholar
  15. 15.
    MacGregor, R.M.: Representing reified relations in Loom. J. Experimental and Theoretical Artificial Intelligence 5, 179–183 (1993)CrossRefGoogle Scholar
  16. 16.
    Nguyen, V., Bodenreider, O., Sheth, A.P.: Don’t like RDF reification?: making statements about statements using singleton property. In: WWW 2014, pp. 759–770 (2014)Google Scholar
  17. 17.
    Noy, N., Rector, A. (eds.): Defining N-ary Relations on the Semantic Web. W3C Working Group Note (April 12, 2006), http://www.w3.org/TR/swbp-n-aryRelations/
  18. 18.
    OWL Working Group, W.: OWL 2 Web Ontology Language: Document Overview. W3C Recommendation (October 27, 2009), http://www.w3.org/TR/owl2-overview/
  19. 19.
    Sintek, M., Decker, S.: TRIPLE – a query, inference, and transformation language for the Semantic Web. In: Horrocks, I., Hendler, J. (eds.) ISWC 2002. LNCS, vol. 2342, pp. 364–378. Springer, Heidelberg (2002)CrossRefGoogle Scholar
  20. 20.
    Voss, J.: Collaborative thesaurus tagging the Wikipedia way. CoRR abs/cs/0604036 (2006)Google Scholar
  21. 21.
    Vrandečić, D., Krötzsch, M.: Wikidata: A free collaborative knowledge base. Comm. ACM (to appear, 2014)Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Fredo Erxleben
    • 1
  • Michael Günther
    • 1
  • Markus Krötzsch
    • 1
  • Julian Mendez
    • 1
  • Denny Vrandečić
    • 2
  1. 1.Technische Universität DresdenGermany
  2. 2.GoogleSan FranciscoUSA

Personalised recommendations