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Wikidata

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Open Data lecture on Wikidata at HTW Berlin
2015-01-12

Based on slides by Lydia.

Published in: Internet

Wikidata

  1. 1. WikidataThe free knowledge base that anyone can edit Anja Jentzsch - @anjeve Hasso Plattner Institute, Potsdam, Germany ! ! ! Open Data Lecture, HTW Berlin 2015/01/12
  2. 2. Imagine a world in which every single human being can freely share in the sum of all knowledge.
  3. 3. 33 500 000 articles 1 900 000 000 edits 287 languages
  4. 4. But...
  5. 5. 1. low-tech (but powerful)
  6. 6. What are the 10 biggest cities that have a female mayor?
  7. 7. What are the 10 biggest cities that have a female mayor?
  8. 8. 2. editor retention and recruiting
  9. 9. ha.wikipedia.org
  10. 10. 3. coverage and reach
  11. 11. English
  12. 12. French
  13. 13. Italian
  14. 14. Greek
  15. 15. Turkish
  16. 16. 1 000 000+ articles: 12 Wikipedias 100 000+ articles: 39 Wikipedias total: 287 Wikipedias
  17. 17. Wikidata to the rescue!
  18. 18. A free knowledge base that anyone can edit
  19. 19. Structured Data is stored in a structured form allowing easy access and reuse Collaborative Data is maintained by Wikidata editors (volunteers) Free Data stored in Wikidata is published under a free license Open The software is also open and free What is Wikidata actually?
  20. 20. Multilingual Editing, consuming, browsing and reusing the data is fully multilingual Referenced Wikidata can handle sources for individual statements Integrated Client sites such as Wikipedia are hooked up for direct data access What is Wikidata actually?
  21. 21. • REST API for read/write • Full dumps of everything • Many formats: JSON, XML, RDF, … • CC0 license • Stable IDs / URIs • Linked Open Data standards All Data is Available
  22. 22. https://www.wikidata.org/wiki/Q875138
  23. 23. The world according to Wikidata
  24. 24. • allows a lot of easy micro-contributions • supports small languages • allows easy data entry and editing • automates some stuff currently done by hand How does Wikidata help?
  25. 25. can handle qualifiers and sources
  26. 26. can handle differing opinions cc-by-sa 3.0 by BambooBeast
  27. 27. Time for some stats
  28. 28. 30 600 000+ language links removed
  29. 29. 27 000 000+ statements created
  30. 30. 14 000+ active editors (ranks 5th among all Wikimedia projects)
  31. 31. 6600+ new Wikimedians
  32. 32. Visualizations
  33. 33. GeneaWiki toolserver.org/~magnus/ts2/geneawiki
  34. 34. Wikidata tempo-spatial display tools.wmflabs.org/wikidata-todo/tempo_spatial_display.html?q=Q12551
  35. 35. Wikidata Map Interface tools.wmflabs.org/wikidata-analysis/map/map.html
  36. 36. Wikidata Map Interface tools.wmflabs.org/wikidata-analysis/map/map.html
  37. 37. • large multilingual knowledge base with references • huge amount of data under an open license • for free! • various data access points:API, Linked Data interface • edited and maintained by a large community • an example of introducing a major change to a huge collaborative project • run your own instance What does Wikidata mean for the world outside Wikimedia?
  38. 38. ! Open Data Publisher Award (2014) Received at the Open Data Institute by Nigel Shadbolt andTim Berners-Lee
  39. 39. " We’ve decided to help transfer the data in Freebase to Wikidata, and in mid-2015 we’ll wind down the Freebase service as a standalone project. moves to Wikidata Google, 2014-12-16 https://plus.google.com/u/0/109936836907132434202/posts/bu3z2wVqcQc
  40. 40. • Improved user experience • Queries • More tools • Growing the ecosystem ! wikidata.org/wiki/Wikidata:Development_plan What 2015 will bring
  41. 41. What areYOU going to do with Wikidata?
  42. 42. wikidata.org @wikidata #wikimedia-wikidata wikidata-l@lists.wikimedia.org

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