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Knowledge Organization with Wikipedia – Joining the Free Encyclopaedia and Digital Libraries Jakob Voss Wikimedia Deutschland e.V. / Common Library Network (GBV) 5 th NKOS Workshop, Alicante September 21, 2006. CC-SA-2.5. [[ Outline ]]. Wikipedia Wikipedia's Category system Mapping

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Knowledge organization with wikipedia joining the free encyclopaedia and digital libraries

Knowledge Organizationwith Wikipedia –Joining the Free Encyclopaedia and Digital Libraries

Jakob VossWikimedia Deutschland e.V. /Common Library Network (GBV)

5th NKOS Workshop, Alicante

September 21, 2006

CC-SA-2.5

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006


Outline

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Outline]]

  • Wikipedia

  • Wikipedia's Category system

  • Mapping

  • Indexing with Wikipedia articles

  • Summary

  • Learn from Wikipedia


W hat wikipedia is

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[What Wikipedia is]]

  • Collaborative edited

  • Free Content

  • Encyclopaedias

  • ~5 million articles, >50.000 editors

  • 230 languages (~50 with > 10.000)

  • Non-commercial, no ads

  • TOP 16 website by access


How wikipedia is created

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[How Wikipedia is created]]

1) Find something to improve

2) Do it right

3) Let other people improve it


Wikipedia categories

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Wikipedia categories]]

  • Tagging by linking[[Categorie:Information Science]][[Category:Belgion Inventor]]...

  • Open for all

  • Blind tagging

  • No aggregation (set-model)

  • Multi-hierarchical relations

  • High connectivity

    Example: http://en.wikipedia.org/wiki/Paul_Otlet


Wikipedia categories1

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Wikipedia categories]]


Category system as kos

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Category system as KOS]]

Collaboratively edited, general thesaurus

(en, Jan 2006: 91,502 categories, 923,196 articles)

Voss (2006): Collaborative thesaurus tagging the Wikipedia way

http://arxiv.org/abs/cs.IR/0604036


Mapping categories

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Mapping categories]]

  • Articles linked via interlanguage links[[en:Paul_Otlet]], [[en:Paul_Otlet]]…

  • Categories linked via interlanguage links

  • Inter-Wiki mapping with cooccurences http://tools.wikimedia.de/~voj/cgi-bin/cocat?wikilang=en&wikifam=.wikipedia.org&cat=Information_science


Mapping categories and kos

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Mapping categories and KOS]]

  • Manually add links to other KOS

  • [[Kategorie:Informetrie]] <->JITA class BBbibliometric methodshttp://de.wikipedia.org/wiki/Kategorie:Informetrie

  • Not very visible

  • Difficult to judge


Mapping articles and kos

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Mapping articles and KOS]]

  • Links to authority file PND(German National Library)

    {{PND|119510928}}

  • De, Aug 2006:>100.000 biographies~ 20% with PND

  • Plans with GKD(corporate bodies)

  • 1:1, 1:n, n:m

Wikipedia

article

PND

...

Library

Museum


Indexing and the semantic web

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Indexing and the Semantic Web]]

Redirects & Disambiguation=> Controlled vocabulary

Stable referable concepts for indexing (indentity and reference in SW)

Proposed by Bunescu & Pasça (2006), Fernandéz-García et al (2005), Hepp et al (2006), Krizhanovsky (2006),: Synonym search in Wikipedia: Synarcher, Lüer (2006), Voss (2006)…

Solution: Published Subject IdentifiersPepper (2006)

Changes and stable version URI/URL


Semantic wikipedia

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Semantic Wikipedia]]

Typed links: [[is capital of::England]]=> RDF triples

Völkel et al (2006): Semantic Wikipedia. WWW2006 conference


Join wikipedia and kos

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Join Wikipedia and KOS]]

KOS

WikipediaContent

Wikipedia

KOS

Linking and Mapping

Enrichment

Portal, Meta-KOS…

Wikipedia

=

KOS

KOS

Wikipedia

Combination

Integration


Learn from wikipedia

Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006

[[Learn from Wikipedia]]

Free you research(open access)

Free your data (verifyability)

Free your code(open source)

Free your KOS(interoperability)

Full references are listed at http://bibliography.wikimedia.de


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