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http://nl.dbpedia.org




      DataSalon Gent – 24/2/12
          Enno Meijers – Bibliotheek.nl
          enno.meijers@bibliotheek.nl
Wikipedia artikelen per land (mln)
       bron: http://stats.wikimedia.org/EN/Sitemap.htm#comparisons
3,89




                       1,36
                                             1,21
                                                                     1,02




en                      de                     fr                     nl



                                                            % templates gemapped in DBpedia
                                                                           http://mappings.dbpedia.org/sprint/
                                                          81,61



                                                                                 54,82

                                                                                                   38,73




                                                                                                                 1,5

                                                            en                     de                fr          nl
dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@en




        Tekst tot inhoudsopgave
         (max. 500 woorden)




                  dbpedia:Herman_Brusselmans dbpedia-owl:abstract "Herman Frans
                  Martha Brusselmans is a Flemish novelist... Koen Mortier."@en
Maar:
- versie 3.7; stand juli 2011!
- alleen Engelse versie wordt direct bijgewerkt (Live extraction)
- beperkt aantal talen (waaronder nl)




        dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@nl

        dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@fr

        dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@de



        dbpedia:Herman_Brusselmans dbpedia-owl:abstract “Herman Frans
        Martha Brusselmans is een Vlaams schrijver."@nl

        dbpedia:Herman_Brusselmans dbpedia-owl:abstract "Herman Frans
        Martha ... monde des lettres."@fr

        dbpedia:Herman_Brusselmans dbpedia-owl:abstract "Herman
        Brusselmans … lebt in Gent."@de
En verder nog meer algemene mapping’s:

•   Images. Links pointing at Wikimedia Commons images depicting a resource are extracted and represented
    by using the foaf:depiction property.

•   Redirects. In order to identify synonymous terms, Wikipedia articles can redirect to other articles. We
    extract these redirects and use them to resolve references between DBpedia resources.

•   External links. Articles contain references to external Web resources which we represent by using the
    DBpedia property dbpedia:reference.

•   Pagelinks. We extract all links between Wikipedia articles and represent them by using the
    dbpedia:wikilink property.

•   Homepages. This extractor obtains links to the homepages of entities such as companies and organisations
    by looking for the terms homepage or website within article links
•   Categories. Wikipedia articles are arranged in categories, which we represent by using the SKOS
    vocabulary4.

•   Geo-coordinates. The geo-extractor expresses coordinates by using the Basic Geo (WGS84 lat/long)
    Vocabulary5 and the GeoRSS Simple encoding of the W3C Geospatial Vocabulary6.

•   Metainformation. A new extractor which introduces organisational properties like direct edit links and oai
    identifiers for edit and delete operations.
foaf:name

                                         dbpprop:background
{{Infobox musical artist
| name           = Tom Waits                        foaf:givenName
| image          = Tom Waits 3.jpg
| caption        = Waits … in Buenos Aires, Argentina, April 2007
| background        = solo_singer              dbpedia-owl:birthDate
| birth_name        = Thomas Alan Waits
| birth_date           = {{Birth date and age|mf=yes|1949|12|7}}
| birth_place =[[Pomona, California]], United States
| instrument       = [[Singing|Vocals]], [[piano]], [[guitar]]
                                               dbpedia-owl:birthPlace
| genre         = [[Rock music|Rock]], [[experimental music]]
| occupation       = Singer-songwriter, musician, actor, composer
| years_active      = 1972–present              dbpprop:instrument
| label        = [[Asylum Records]], [[Island Records]], [[ANTI-]]
| website = {{URL|http://www.badasme.com/|Official website}}
}}
                                               dbpprop:genre

                                        dbpprop:occupation

                                dbpedia-owl:activeYearsStartYear

                         dbpedia-owl:recordLabel

               foaf:homepage
DBpedia Mappings Wiki
Een stukje van een Infobox mapping:
{{PropertyMapping | templateProperty = Name | ontologyProperty = foaf:name }}
{{PropertyMapping | templateProperty = name | ontologyProperty = foaf:name }}
{{PropertyMapping | templateProperty = Current_members | ontologyProperty = bandMember }}
{{PropertyMapping | templateProperty = current_members | ontologyProperty = bandMember }}
{{PropertyMapping | templateProperty = Members | ontologyProperty = bandMember }}
{{PropertyMapping | templateProperty = Past_members | ontologyProperty = formerBandMember }}
{{PropertyMapping | templateProperty = past_members | ontologyProperty = formerBandMember }}
{{PropertyMapping | templateProperty = Background | ontologyProperty = background }}
{{PropertyMapping | templateProperty = background | ontologyProperty = background }}
{{PropertyMapping | templateProperty = Birth_name | ontologyProperty = foaf:givenName }}
{{PropertyMapping | templateProperty = birth_name | ontologyProperty = foaf:givenName }}
                                      enz.



 Zie voor meer informatie http://mappings.dbpedia.org
• Invulling info boxen is beperkt




• Specifieke taal problemen zie aanpassing voor Griekse chapter
  (o.a. ook IRI’s)
meer informatie
• mappings.dbpedia.org

• artikel: “DBpedia Live Extraction”, Sebastian Hellman
  e.a., 2009

• artikel: “Internationalization of Linked Data: The case of
  the Greek DBpedia edition”, Dimitris Kontokostas, 2012

• DBpedia Mapping Language, Anja Jentzsch, 2010

• dbpedia-discussion@lists.sourceforge.net
Voorstel

1. nl.dbpedia.org en Extraction Framework inrichten
    door DBpedia team Leipzig ism Bibliotheek.nl

2. configuren/aanpassen software voor betere (taalgevoelige) harvesting
    door Bibliotheek.nl / DBpedia team / programmeurs ism UvA? Univ Gent???

3. invullen mappingsschema’s en uitbreiden ontologie en properties
     door IT/IP’ers via community ism Bibliotheek.nl / Bibnet (?)

4. beter invullen van de Infobox op de wikipedia pagina
    door community met ondersteuning van bibliotheekorganisaties en WikiMedia
discussie
• Goed idee?

• Gaat het werken via de community? Hoe moeten we dit opstarten?

• Welke organisaties kennen jullie die hier een rol bij zouden willen spelen?

• Meer richten op software voor vullen van Infobox (tekst analyse, zie
  bijvoorbeeld Ipopulator)

• Wat te doen met dialecten bijv. Fries?

• Zouden we ons niet moeten concentreren op specifieke informatie?

• WIE DOET MEE?

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Presentatie nl.dbpedia.org Datasalon 8 Gent 24 Februari 2012

  • 1. http://nl.dbpedia.org DataSalon Gent – 24/2/12 Enno Meijers – Bibliotheek.nl enno.meijers@bibliotheek.nl
  • 2. Wikipedia artikelen per land (mln) bron: http://stats.wikimedia.org/EN/Sitemap.htm#comparisons 3,89 1,36 1,21 1,02 en de fr nl % templates gemapped in DBpedia http://mappings.dbpedia.org/sprint/ 81,61 54,82 38,73 1,5 en de fr nl
  • 3.
  • 4. dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@en Tekst tot inhoudsopgave (max. 500 woorden) dbpedia:Herman_Brusselmans dbpedia-owl:abstract "Herman Frans Martha Brusselmans is a Flemish novelist... Koen Mortier."@en
  • 5. Maar: - versie 3.7; stand juli 2011! - alleen Engelse versie wordt direct bijgewerkt (Live extraction) - beperkt aantal talen (waaronder nl) dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@nl dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@fr dbpedia:Herman_Brusselmans rdfs:label "Herman Brusselmans"@de dbpedia:Herman_Brusselmans dbpedia-owl:abstract “Herman Frans Martha Brusselmans is een Vlaams schrijver."@nl dbpedia:Herman_Brusselmans dbpedia-owl:abstract "Herman Frans Martha ... monde des lettres."@fr dbpedia:Herman_Brusselmans dbpedia-owl:abstract "Herman Brusselmans … lebt in Gent."@de
  • 6. En verder nog meer algemene mapping’s: • Images. Links pointing at Wikimedia Commons images depicting a resource are extracted and represented by using the foaf:depiction property. • Redirects. In order to identify synonymous terms, Wikipedia articles can redirect to other articles. We extract these redirects and use them to resolve references between DBpedia resources. • External links. Articles contain references to external Web resources which we represent by using the DBpedia property dbpedia:reference. • Pagelinks. We extract all links between Wikipedia articles and represent them by using the dbpedia:wikilink property. • Homepages. This extractor obtains links to the homepages of entities such as companies and organisations by looking for the terms homepage or website within article links • Categories. Wikipedia articles are arranged in categories, which we represent by using the SKOS vocabulary4. • Geo-coordinates. The geo-extractor expresses coordinates by using the Basic Geo (WGS84 lat/long) Vocabulary5 and the GeoRSS Simple encoding of the W3C Geospatial Vocabulary6. • Metainformation. A new extractor which introduces organisational properties like direct edit links and oai identifiers for edit and delete operations.
  • 7. foaf:name dbpprop:background {{Infobox musical artist | name = Tom Waits foaf:givenName | image = Tom Waits 3.jpg | caption = Waits … in Buenos Aires, Argentina, April 2007 | background = solo_singer dbpedia-owl:birthDate | birth_name = Thomas Alan Waits | birth_date = {{Birth date and age|mf=yes|1949|12|7}} | birth_place =[[Pomona, California]], United States | instrument = [[Singing|Vocals]], [[piano]], [[guitar]] dbpedia-owl:birthPlace | genre = [[Rock music|Rock]], [[experimental music]] | occupation = Singer-songwriter, musician, actor, composer | years_active = 1972–present dbpprop:instrument | label = [[Asylum Records]], [[Island Records]], [[ANTI-]] | website = {{URL|http://www.badasme.com/|Official website}} }} dbpprop:genre dbpprop:occupation dbpedia-owl:activeYearsStartYear dbpedia-owl:recordLabel foaf:homepage
  • 8. DBpedia Mappings Wiki Een stukje van een Infobox mapping: {{PropertyMapping | templateProperty = Name | ontologyProperty = foaf:name }} {{PropertyMapping | templateProperty = name | ontologyProperty = foaf:name }} {{PropertyMapping | templateProperty = Current_members | ontologyProperty = bandMember }} {{PropertyMapping | templateProperty = current_members | ontologyProperty = bandMember }} {{PropertyMapping | templateProperty = Members | ontologyProperty = bandMember }} {{PropertyMapping | templateProperty = Past_members | ontologyProperty = formerBandMember }} {{PropertyMapping | templateProperty = past_members | ontologyProperty = formerBandMember }} {{PropertyMapping | templateProperty = Background | ontologyProperty = background }} {{PropertyMapping | templateProperty = background | ontologyProperty = background }} {{PropertyMapping | templateProperty = Birth_name | ontologyProperty = foaf:givenName }} {{PropertyMapping | templateProperty = birth_name | ontologyProperty = foaf:givenName }} enz. Zie voor meer informatie http://mappings.dbpedia.org
  • 9.
  • 10.
  • 11.
  • 12. • Invulling info boxen is beperkt • Specifieke taal problemen zie aanpassing voor Griekse chapter (o.a. ook IRI’s)
  • 13.
  • 14. meer informatie • mappings.dbpedia.org • artikel: “DBpedia Live Extraction”, Sebastian Hellman e.a., 2009 • artikel: “Internationalization of Linked Data: The case of the Greek DBpedia edition”, Dimitris Kontokostas, 2012 • DBpedia Mapping Language, Anja Jentzsch, 2010 • dbpedia-discussion@lists.sourceforge.net
  • 15. Voorstel 1. nl.dbpedia.org en Extraction Framework inrichten door DBpedia team Leipzig ism Bibliotheek.nl 2. configuren/aanpassen software voor betere (taalgevoelige) harvesting door Bibliotheek.nl / DBpedia team / programmeurs ism UvA? Univ Gent??? 3. invullen mappingsschema’s en uitbreiden ontologie en properties door IT/IP’ers via community ism Bibliotheek.nl / Bibnet (?) 4. beter invullen van de Infobox op de wikipedia pagina door community met ondersteuning van bibliotheekorganisaties en WikiMedia
  • 16. discussie • Goed idee? • Gaat het werken via de community? Hoe moeten we dit opstarten? • Welke organisaties kennen jullie die hier een rol bij zouden willen spelen? • Meer richten op software voor vullen van Infobox (tekst analyse, zie bijvoorbeeld Ipopulator) • Wat te doen met dialecten bijv. Fries? • Zouden we ons niet moeten concentreren op specifieke informatie? • WIE DOET MEE?