Transcript Slide 1

Linked Data 2:
Hvordan
[email protected]
KoG31 Uke 8, 2013
Raw Data Now!
Kongene: Metadata, standarder og data
Fra:
http://www.ibtimes.com/articles/112144/20110214/obama2012-budget-education-low-income.htm
Data er
viktig!
http://www.regjeringen.no/nb/dep/kud/dok/nouer/2010/no
u-2010-14/6.html?id=628640
Data er
viktig!
Data for mennesker (dokumenter)
Data for datamaskiner
Linked data – en definisjon
"A term used to describe a recommended best practice for exposing,
sharing, and connecting pieces of data, information, and knowledge on
the Semantic Web using URIs and RDF."
Fra: http://linkeddata.org/
URI = Uniform Resource Identifier
RDF = Resource Description Framework
2006
Linked Data - hvordan
1. Use URIs as names for things
2. Use HTTP URIs so that people can look
up those names.
3. When someone looks up a URI, provide useful
RDF
information, using the standards (
,
SPARQL)
4. Include links to other URIs. so that they can
discover more things.
Fra: http://www.w3.org/DesignIssues/LinkedData.html
HTTP URIs = URLs
Andre sentrale byggesteiner i tillegg til URIer og RDF
•
•
XML
Vokabular
Har navn Paul Weller
Er en Musiker
Har navn The Jam
Er en Musikkgruppe
Paul Weller
Var medlem av
The Jam
Har navn Woking
Er en By
Paul Weller
Var født i
Var medlem av
Woking
The Jam
Har tittel The War of the Worlds
Er en Bok
Er skrevet av H.G. Wells
filmatisert
filmatisert
Lansert i 2005
Er en Film
Skrevet av
Lansert i 1953
Er en Film
Har navn H.G. Wells
Er en Forfatter
Har navn Martian tripod
Er en Skulptur
Paul Weller
Var født i
Var medlem i
Woking
Var basert i
Ligger i
The Jam
Martian tripod
The War of the Worlds
Objekt – Egenskap – Verdi
Subjekt – Predikat – Objekt
Tripler
Subjekt
Predikat
Objekt
Har navn
Paul Weller
Har navn
The Jam
Var medlem av
Har navn
Var født i
Woking
Vi må entydig identifisere det vi skal beskrive, dvs. subjektet.
<http://sws.geonames.org/2633709>
Subjekt
<http://dbpedia.org/resource/Woking>
<http://dbpedia.org/resource/Paul_Weller>
<http://viaf.org/viaf/97006424>
<http://dbpedia.org/resource/H._G._Wells>
Predikater må også identifiseres.
<http://dbpedia.org/ontology/abstract>
Mer lesbar for mennesker når prefikser brukes:
<dbpedia-owl:abstract>
Vi kan gjøre det samme med subjekter:
<dbpedia:Paul_Weller>
Predikater
<dbpedia-owl:abstract>
<gn:countryCode>
<dbpprop:dialCode>
<dbpprop:population>
<geo:long>
<dbpprop:shireCounty>
<geo:lat>
<dbpedia:Woking>
<rdf:type>
<dbpedia-owl:distanceToLondon>
Predikater samles i vokabularer
<foaf:name>
FOAF (Friend of a friend) innholder predikater
som kan brukes for å beskrive personer og
organisasjoner.
<foaf:img>
Dublin Core innholder predikater som kan
brukes for å beskrive dokument lignende
objekter (DLOer)
dc:subject
SKOS (Simple Knowledge organisation
System) innholder predikater som kan
brukes for å beskrive tesauri,
klassifikasjonsskjema, emneordslister, osv.
skos:broader
<foaf:knows>
<foaf:homepage>
dc:title
dc:creator
skos:prefLabel
skos:altLabel
skos:narrower
Objekter er enten litteral (tekst, nummer, datoer, …) eller andre
subjekter
<dbpedia:Woking>
<dbpedia:Paul_Weller>
<dbpedia:Paul_Weller>
<dbpedia:Paul_Weller>
<freebase:Paul_Weller>
<freebase:Paul_Weller>
<dbprop:population>
103932
<foaf:name>
Paul Weller
<dbpedia-owl:birthPlace>
<owl:sameAs>
<dbpedia:Woking>
<freebase:Paul_Weller>
<freebase:person.date_of_birth>
<freebase:height_meters>
1958-05-25
1.8
103932
<dbpedia:Woking>
<dbprop:population>
Paul Weller
<dbpedia-owl:birthPlace>
<foaf:name>
<dbpedia:Paul_Weller>
<owl:sameAs>
<freebase:Paul_Weller>
<freebase:person.date_of_birth>
<freebase:height_meters>
1958-05-25
1.8
Linked Open Data
"The goal of the W3C SWEO Linking Open Data community project is to
extend the Web with a data commons by publishing various open data sets
as RDF on the Web and by setting RDF links between data items from
different data sources."
http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData
Mars, 2009
September, 2010
http://www.bbc.co.uk/music/artists/c4406045-e640-4cfe-8b884732cce314d4#p009x1xg
http://www.bbc.co.uk/music/artists/c4406045-e640-4cfe-8b884732cce314d4#p009x1xg
http://dbpedia.org/data/Paul_Weller.rdf
?
http://musicbrainz.org/mm-2.1/artistrel/c4406045-e640-4cfe-8b884732cce314d4#p009x1xg
?
http://www.bbc.co.uk/music/artists/c4406045-e640-4cfe-8b884732cce314d4.rdf
?
Hva med bibliotekdata?
http://lod-cloud.net/versions/2011-09-19/lod-cloud_colored.png
Mai, 2009
http://libris.kb.se/data/bib/4572831?format=application/rdf%2bxml
<http://libris.kb.se/resource/bib/9864017>
<dc:creator>
H. G. Wells
<dc:creator>
<http://libris.kb.se/resource/auth/101323>
<bibo:isbn10>
<dc:date>
<dc:title>
9100108669
2005
Världarnas krig / H. G. Wells ; översättning av
Gertrud Hallvig
<rda:placeOfPublication>
<http://purl.org/NET/marccodes/countries/sw#location>
<libris:frbr_related>
<http://libris.kb.se/resource/bib/10457842>
<http://libris.kb.se/resource/auth/101323>
<owl:sameAs>
<http://viaf.org/viaf/97006424/#foaf:Person>
<owl:sameAs>
<http://dbpedia.org/resource/H._G._Wells>
http://id.loc.gov/authorities/sh85081548.rdf
http://dewey.info/class/523/about.no.rdf
http://dewey.info/class/523/about.ru.rdf
http://bibin.hioa.no/~davm/bokhylla/700.html
http://www.bibpode.no/
Oppdatering: http://digital.deichman.no/data-deichman-no/
http://bibin.hioa.no/~davm/onskebok/mobil/start.html
"Experiment with Semantic Web and linked data technologies to see what
benefits to the bibliographic framework they offer our community and how our
current models need to be adjusted to take fuller advantage of these
benefits."
http://www.loc.gov/marc/transition/news/framework-051311.html
http://librarylab.law.harvard.edu/dpla/demo/app/
Foto:
Lego city http://www.flickr.com/photos/eiriknewth/
Paul Weller http://www.flickr.com/photos/nrk-p3/
The Jam http://www.flickr.com/photos/topsy/
Woking http://www.flickr.com/photos/clocky/
Skulptur http://www.flickr.com/photos/mrasoulov/
H.G. Wells http://commons.wikimedia.org/wiki/Main_Page
Tripler http://www.flickr.com/photos/jacqueline-w/
Kongene http://www.flickr.com/photos/[email protected]/
TBL http://commons.wikimedia.org/wiki/Main_Page
Atoumium http://www.flickr.com/photos/abhilashravishankar/
Cheerleaders: http://www.flickr.com/photos/youneak/3366254867/