jakob voss : knowledge organization with wikipedia. 5 th nkos workshop, sep 21,2006 knowledge...
TRANSCRIPT
Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006
Knowledge Organizationwith Wikipedia –
Joining the Free Encyclopaedia and Digital Libraries
Jakob VossWikimedia Deutschland e.V. /
Common Library Network (GBV)
5th NKOS Workshop, AlicanteSeptember 21, 2006
CC-SA-2.5
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
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
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
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
Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006
[[Wikipedia categories]]
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)
Distribution of descriptor levels
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
35.0%
1 2 3 4 5 6 7 8 9 10 11 12
level
de
sc
rip
tors
DDC (ext.)
Wikipedia (en)
Voss (2006): Collaborative thesaurus tagging the Wikipedia wayhttp://arxiv.org/abs/cs.IR/0604036
Distribution of descriptors per record
0%
1%
10%
100%
1 2 3 4 5 6 7 8 9
descriptors (categories or tags)
reco
rds
(pag
es o
r p
ost
s)
Wikipedia
del.icio.us
exponential (λ=0.6)
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
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 BB bibliometric methodshttp://de.wikipedia.org/wiki/Kategorie:Informetrie
* Not very visible
* Difficult to judge
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
PND
Library
Museum
...
Wikipedia
article
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
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
Jakob Voss : Knowledge Organization with Wikipedia. 5th NKOS Workshop, Sep 21,2006
[[Join Wikipedia and KOS]]
KOSKOSWikipedi
aContent
Wikipedia
KOS Wikipedia
Portal, Meta-KOS…
Enrichment
Wikipedia=
KOS
Linking and Mapping
CombinationIntegration
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