Introducing Wikidata to the Linked Data Web Fredo Erxleben , Michael - - PowerPoint PPT Presentation

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Introducing Wikidata to the Linked Data Web Fredo Erxleben , Michael - - PowerPoint PPT Presentation

Jan 09, 2024 24 likes •226 views

www.tu-dresden.de Introducing Wikidata to the Linked Data Web Fredo Erxleben , Michael Gnther , Markus Krtzsch , Julian Mendez and Denny Vrandei ISWC, 21th October 2014 About Wikidata Launched on 30th October 2012 15,817,444

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SLIDE 1

Fredo Erxleben , Michael Günther , Markus Krötzsch , Julian Mendez and Denny Vrandečić

www.tu-dresden.de

ISWC, 21th October 2014

Introducing Wikidata to the Linked Data Web

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SLIDE 2
  • 21. October 2014

Michael Günther 2

About Wikidata

  • Launched on 30th October 2012
  • 15,817,444 item pages
  • 12,674 active users

(state of 1st October 2014)

http://www.wikidata.org

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SLIDE 3
  • 21. October 2014

Michael Günther 3

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SLIDE 4
  • 21. October 2014

Michael Günther 4

Property Value Qualifjers Statement

About Wikidata

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SLIDE 5
  • 21. October 2014

Michael Günther 5

Property Value Qualifjers Statement

About Wikidata

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SLIDE 6
  • 21. October 2014

Michael Günther 6

Property Value Qualifjers Statement

About Wikidata

References

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SLIDE 7
  • 21. October 2014

Michael Günther 7

  • Entities (items and properties) are represented with uniform URIs

http://www.wikidata.org/entity/<id>

Wikidata RDF

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SLIDE 8
  • 21. October 2014

Michael Günther 8

  • Entities (items and properties) are represented with uniform URIs

http://www.wikidata.org/entity/<id>

Wikidata RDF

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SLIDE 9
  • 21. October 2014

Michael Günther 9

  • Entities (items and properties) are represented with uniform URIs

http://www.wikidata.org/entity/<id>

Wikidata RDF

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SLIDE 10
  • 21. October 2014

Michael Günther 10

  • Entities (items and properties) are represented with uniform URIs

http://www.wikidata.org/entity/<id>

Wikidata RDF

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SLIDE 11
  • 21. October 2014

Michael Günther 11

Wikidata RDF

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SLIDE 12
  • 21. October 2014

Michael Günther 12

Wikidata RDF

  • Additional simple-statements dump
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SLIDE 13
  • 21. October 2014

Michael Günther 13

Wikidata RDF

  • Additional simple-statements dump
  • Individual dumps for statements, terms

and sitelinks

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SLIDE 14
  • 21. October 2014

Michael Günther 14

Wikidata RDF

  • Additional simple-statements dump
  • Individual dumps for statements, terms

and sitelinks

  • Dumps about schema information
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SLIDE 15
  • 21. October 2014

Michael Günther 15

Wikidata RDF

  • Additional simple-statements dump
  • Individual dumps for statements, terms and

sitelinks

  • Dumps about schema information
  • IRIs

Entities http://www.wikidata.org/entity/<entityID> Statements http://www.wikidata.org/entity/<entityID><UUID> Values http://www.wikidata.org/entity/V<hash> References http://www.wikidata.org/entity/R<hash>

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SLIDE 16
  • 21. October 2014

Michael Günther 16

Wikidata RDF

  • Additional simple-statements dump
  • Individual dumps for statements, terms and

sitelinks

  • Dumps about schema information
  • IRIs

Entities http://www.wikidata.org/entity/<entityID> Statements http://www.wikidata.org/entity/<entityID><UUID> Values http://www.wikidata.org/entity/V<hash> References http://www.wikidata.org/entity/R<hash>

  • OWL compatible
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SLIDE 17
  • 21. October 2014

Michael Günther 17

Wikidata RDF

  • Additional simple-statements dump
  • Individual dumps for statements, terms and sitelinks
  • Dumps about schema information
  • IRIs

Entities http://www.wikidata.org/entity/<entityID> Statements http://www.wikidata.org/entity/<entityID><UUID> Values http://www.wikidata.org/entity/V<hash> References http://www.wikidata.org/entity/R<hash>

  • OWL compatible
  • Reuse of third-party vocabulary
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SLIDE 18
  • 21. October 2014

Michael Günther 18

Wikidata RDF

  • Additional simple-statements dump
  • Individual dumps for statements, terms and sitelinks
  • Dumps about schema information
  • IRIs

Entities http://www.wikidata.org/entity/<entityID> Statements http://www.wikidata.org/entity/<entityID><UUID> Values http://www.wikidata.org/entity/V<hash> References http://www.wikidata.org/entity/R<hash>

  • OWL compatible
  • Reuse of third-party vocabulary
  • Links to 17 other RDF datasets
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SLIDE 19
  • 21. October 2014

Michael Günther 19

Wikidata RDF

File Topic File size Triples Content instances 49M 11,659,628 rdf:type relations taxonomy 1.1M 221,300 rdfs:subclassOf relations simple-statement 478M 66,748,306 simplifjed statements statements 2.5G 191,467,639 statements terms 1.1G 119,831,832 labels, aliases, descriptions properties 1.2M 65,280 properties sitelinks 1.1G 137,858,016 sitelinks

Generated with Wikidata Toolkit https://www.mediawiki.org/wiki/Wikidata_Toolkit

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SLIDE 20
  • 21. October 2014

Michael Günther 20

Summary and Conclusion

  • Over 500 million triples
  • Generated every month
  • Next steps:

– Integrating more datasets – Completing Wikidata RDF service – SPARQL endpoint

http://tools.wmfmabs.org/wikidata-exports/rdf