Creating Knowledge out of Interlinked Data

LOD2 Presentation . 02.09.2010 . Page http://lod2.euAKSW, Universität Leipzig

Dimitris Kontokostas

DBpedia Mappings Crowd-sourcing

DBpedia is a community project, please see http://dbpedia.org for a List of contributors

07/04/2014 WWW 2014

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Structure in Wikipedia

Title Abstract Infoboxes Geo-coordinates Categories Images Links

other language versions other Wikipedia pages To the Web Redirects Disambiguations

Infobox Templates

{{Infobox Korean settlement| title = Busan Metropolitan City| img = Busan.jpg| imgcaption = A view of the [[Geumjeong]] district in Busan| hangul = 부산 광역시...| area_km2 = 763.46| pop = 3635389| popyear = 2006| mayor = Hur Nam-sik| divs = 15 wards (Gu), 1 county (Gun)| region = [[Yeongnam]]| dialect = [[Gyeongsang]]}}

dbp:Busan dbp:title ″Busan Metropolitan City″dbp:Busan dbp:hangul ″ 부산 광역시″ @Hangdbp:Busan dbp:area_km2 ″763.46“^xsd:floatdbp:Busan dbp:pop ″3635389“^xsd:intdbp:Busan dbp:region dbp:Yeongnamdbp:Busan dbp:dialect dbp:Gyeongsang...

Wikitext-Syntax

RDF representation

Creating Knowledge out of Interlinked Data

KAIST – LOD2 16.8..2011 . Page http://lod2.eu10

A closer look at infoboxes

Creating Knowledge out of Interlinked Data

KAIST – LOD2 16.8..2011 . Page http://lod2.eu11

A closer look at infoboxes

Creating Knowledge out of Interlinked Data

KAIST – LOD2 16.8..2011 . Page http://lod2.eu12

A closer look at infoboxes

Creating Knowledge out of Interlinked Data

KAIST – LOD2 16.8..2011 . Page http://lod2.eu13

Björk (Musician)Occupation = Musician, ActorBorn = 21.12.1965, Reykjavík

Brown (Prime Minister)office = Prime Minister of the UKbirth_date = 20.4.1951birth_place = Govan

Romero (Actor)occupation = Actor, Editorbirthdate = 4.2.1940birthplace = New York

Creating Knowledge out of Interlinked Data

KAIST – LOD2 16.8..2011 . Page http://lod2.eu14

Björk (Musician)Occupation = Musician, ActorBorn = 21.12.1965, Reykjavík

Brown (Prime Minister)office = Prime Minister of the UKbirth_date = 20.4.1951birth_place = Govan

Romero (Actor)occupation = Actor, Editorbirthdate = 4.2.1940birthplace = New York

Creating Knowledge out of Interlinked Data

KAIST – LOD2 16.8..2011 . Page http://lod2.eu15

Björk (Musician)Occupation = Musician, ActorBorn = 21.12.1965, Reykjavík

Brown (Prime Minister)office = Prime Minister of the UKbirth_date = 20.4.1951birth_place = Govan

Romero (Actor)occupation = Actor, Editorbirthdate = 4.2.1940birthplace = New York

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Creating Knowledge out of Interlinked Data

DBpedia Community Meeting / Amsterdam 30.01.2014 http://lod2.eu

DBpedia – Collaborative Ontology Engineering

• Mappings Wiki• Crowdsource the ontology source as well as infobox type &

properies• http://mappings.dbpedia.org/• Everybody can contribute new mappings or improve existing ones• ~170 editors

• Correct Semantics:• Combine what belongs together (birth_place, birthplace)• Separate what is different (bornIn, birthplace)• Big boost for Precision

• Recall is crowdsourced - Help us! :)

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Creating Knowledge out of Interlinked Data

DBpedia Community Meeting / Amsterdam 30.01.2014 http://lod2.eu

DBpedia – Collaborative Ontology Engineering

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Creating Knowledge out of Interlinked Data

DBpedia Community Meeting / Amsterdam 30.01.2014 http://lod2.eu

DBpedia I18n – Mapping Activity

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Creating Knowledge out of Interlinked Data

DBpedia Community Meeting / Amsterdam 30.01.2014 http://lod2.eu

DBpedia I18n – Mapping Statistics (2013.02)

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Creating Knowledge out of Interlinked Data

DBpedia Community Meeting / Amsterdam 30.01.2014 http://lod2.eu

DBpedia I18n – Mapping Statistics (2013.02)

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Creating Knowledge out of Interlinked Data

DBpedia Community Meeting / Amsterdam 30.01.2014 http://lod2.eu

DBpedia I18n – Mapping Statistics (v3.8)

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Creating Knowledge out of Interlinked Data

LOD2 Presentation . 02.09.2010 . Page http://lod2.eu

Thank you for your attention!

DBpedia is a community project, please see http://dbpedia.org for a list of contributors.