Wikipedia as source of collaboratively created Knowledge Organization Systems

Digitale Bibliothek Jakob Voß Wikipedia as source of collaboratively created Knowledge Organization Systems Fachhochschule Hannover 25. Juni 2009

Wikipedia ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Structure of Wikipedia ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Articles ,[object Object],[object Object]

Links ,[object Object],[object Object],[object Object]

External links ,[object Object],[object Object],[object Object],[object Object],[object Object]

Redirects and disambiguations ,[object Object]

Lists and Portals ,[object Object],[object Object],[object Object],[object Object],[object Object]

Navigation templates ,[object Object]

Categories Nordrhein-Westfalen nach Ort Ort als Thema Rheinland Köln Kultur (Köln) Kölner Dom Geschichte Kölns Messe Köln Multihierarchie of categories Tagged article (social tagging, set model) Kategorien : Katholische Bischhofskirche (Deutschland) | Kölner Dom | Weltkulturerbe in Deutschland | Geschütztes Kulturgut | Architekturikone | Gotisches Bauwerk | Historisches Bauwerk | Stadtbezirk Köln-Innenstadt | Kultbau

Infoboxes and Geodata ,[object Object],[object Object],[object Object],[object Object]

References ,[object Object],[object Object],[object Object]

Revisions and other metadata ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Summary

WikiWord ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WikiWord Thesaurus ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],"Object" @lang "Object" ^^type-URI Resource Description Framework predicate

RDF example (this: SKOS) "Ananas"@de ,[object Object],@prefix skos: <http://www.w3.org/2004/02/skos/core#> . @prefix agro: <http://www.fao.org/aos/agrovoc> .

RDF formats dc:title foaf:firstName foaf:secondName N3 graph ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],dc:creator ,[object Object],Zettelwirtschaft Krajewski Markus ,[object Object]

RDF/XML format <?xml version="1.0" encoding="UTF-8" ?> <rdf:RDF xmlns: rdf =" http://www.w3.org/1999/02/22-rdf-syntax-ns# " xmlns: foaf="http://xmlns.com/foaf/0.1/" xmlns: dc="http://purl.org/dc/elements/1.1/" > <rdf:Description about=" http://d-nb.info/96327841X "> < dc:title >Zettelwirtschaft</dc:title> < dc:creator rdf:Resource=" http://d-nb.info/gnd/13150794X " /> </rdf:Description> <rdf:Description about=" http://d-nb.info/gnd/13150794X "> < foaf:firstName >Markus</foaf:firstName> < foaf:secondName >Krajewski</foaf:secondName> </rdf:Description> </rdf:RDF>

[object Object],[object Object],[object Object]

DBPedia Extraction framework ,[object Object],Wikipedia Extraction Triple Store

DBPedia Extraction framework ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],RDF Triples

Crowd Sourced Extraction Wikipedia Extraction Triple Store

Linked Data ,[object Object],[object Object],[object Object],[object Object],Tim Berners Lee (2006): Linked Data Design Issues http://www.w3.org/DesignIssues/LinkedData.html

Mai 2007 März 2009 September 2008

More complex queries ,[object Object],[object Object],[object Object],[object Object],[object Object]

Beispielanfrage 1965 1965 ,[object Object],Problem: Die Prädikate „music“ (hat-darin-Musik- gemacht) und „born“ (ist-geboren-im-Jahr) müssen bekannt und einheitlich verwendet werden! „ Dancer in the Dark“ „ Björk“ ? ?

Vernüpfungen von Quellen 1965 OPAC DBpedia dbpedia:birthYear Dancer in the Dark Björk Buch über Björk PND:119525054

Inference rules ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Semantic Tagging ,[object Object],[object Object],[object Object],[object Object]

Open Issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

References ,[object Object],[object Object],[object Object],[object Object]

Wikipedia as source of collaboratively created Knowledge Organization Systems

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Wikipedia as source of collaboratively created Knowledge Organization Systems