Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Linked Open Data

  • Christian BizerEmail author
  • Maria-Esther Vidal
  • Hala Skaf-Molli
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80603


Linked data; LOD; Open linked data; Web of linked data


The term Linked Open Data refers to all data that is published on the Web according to a set of best practices, the Linked Data Principles [1]. The idea behind these principles is, on the one hand side, to use standards for the representation and the access to data on the Web. On the other hand, the principles propagate to set hyperlinks between data from different sources. These hyperlinks connect all Linked Data into a single global data graph, similar as the hyperlinks on the classic Web connecting all HTML documents into a single global information space.

Technically, Linked Data relies on Uniform Resource Identifiers (URIs) for the identification of entities, the Resource Description Framework (RDF) as unifying data model, and the Hypertext Transfer Protocol (HTTP) for accessing entity descriptions. An RDF link connects the descriptions of two entities published by different data sources. Linked Data...

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Recommended Reading

  1. 1.
    Berners-Lee T. Linked data; 2006. Available from: http://www.w3.org/DesignIssues/LinkedData.html
  2. 2.
    Jentzsch A, Cyganiak R, Bizer C. State of the LOD cloud; 2011. Available from: http://lod-cloud.net/state/. [Cited 5 Apr 2011].
  3. 3.
    Bizer C, Heath T, Berners-Lee T. Linked data-the story so far. Int J Seman Web Inf Syst. 2009;5(3):1–22.CrossRefGoogle Scholar
  4. 4.
    Schmachtenberg M, Bizer C, Paulheim H. Adoption of the linked data best practices in different topical domains. In: Proceedings of the 13th International Semantic Web Conference; 2014. p. 245–60.Google Scholar
  5. 5.
    Bizer C, Eckert K, Meusel R, Mühleisen H, Schuhmacher M, Völker J. Deployment of RDFa, microdata, and microformats on the web – a quantitative analysis. In: Proceedings of the 12th International Semantic Web Conference; 2013. p. 17–32.Google Scholar
  6. 6.
    Harth A, Hose K, Schenkel R. Linked data management. Boca Raton: CRC Press; 2014.CrossRefGoogle Scholar
  7. 7.
    Aranda CB, Hogan A, Umbrich J, Vandenbussche PY. SPARQL web-querying infrastructure: ready for action? In: Proceedings of the 12th International Semantic Web Conference; 2013. p. 277–93.Google Scholar
  8. 8.
    Isele R, Bizer C. Learning expressive linkage rules using genetic programming. Proc VLDB Endowment. 2012;5(11):1638–49.CrossRefGoogle Scholar
  9. 9.
    Hartig O. An overview on execution strategies for linked data queries. Datenbank-Spektrum. 2013;13(2):89–99.CrossRefGoogle Scholar
  10. 10.
    Montoya G, Ibáñez LD, Skaf-Molli H, Molli P, Vidal ME. SemLAV: local-as-view mediation for SPARQL queries. Trans Large-Scale Data-Knowl-Cent Syst. 2014;13(8420):33–58.CrossRefGoogle Scholar
  11. 11.
    Zaveri A, Rula A, Maurino A, Pietrobon R, Lehmann J, Auer S. Quality assessment for linked data: a survey; 2014. http://www.semantic-web-journal.net/system/files/swj773.pdf
  12. 12.
    Fanizzi N, d’Amato C, Esposito F. Mining linked open data through semi-supervised learning methods based on self-training. In: Proceedings of the 6th IEEE International Conference on Semantic Computing; 2012. p. 277–84.Google Scholar
  13. 13.
    Ibáñez LD, Skaf-Molli H, Molli P, Corby O. Col-graph: towards writable and scalable linked open data. In: Proceedings of the 13th International Semantic Web Conference; 2014. p. 325–40.Google Scholar
  14. 14.
    Heath T, Bizer C. Linked data: evolving the web into a global data space. San Rafael: Morgan & Claypool Publishers; 2011.Google Scholar
  15. 15.
    Fundulaki I, Auer S. Linked open data – introduction to the special theme. ERCIM News. 2014;2014(96):8–9.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Christian Bizer
    • 1
    Email author
  • Maria-Esther Vidal
    • 2
  • Hala Skaf-Molli
    • 3
  1. 1.Web-based Systems GroupUniversity of MannheimMannheimGermany
  2. 2.Computer ScienceUniversidad Simon BolivarCaracasVenezuela
  3. 3.Computer ScienceUniversity of NantesNantesFrance

Section editors and affiliations

  • Avigdor Gal
    • 1
  1. 1.Fac. of IE & Mgmt.Technion--Israel Inst. of TechnologyHaifaIsrael