Quick Linked Data Introduction
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Transcript of Quick Linked Data Introduction
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a quick intro intolinked data
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Web of Documents
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from humansfor humans
Web of Documents
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Web of Documents
and machines? not really welcome …
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then, in 1998, an idea took shape: linked data, by Tim Berners-Lee.
http://www.w3.org/DesignIssues/LinkedData
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linkDATA
rather thanDOCUMENTS
Web of Data
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but wait. haven’t we been doing that for years, now?
Web of Data
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we have CSV, relational data, XML, key-value data, etc.
Web of Data
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true. but it’s not about the surface or exchange syntax.
Web of Data
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actually it isabout a data (RDF)
and naming (URI)
model on the Web.
Web of Data
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back to Tim’s note from ‘98http://www.w3.org/DesignIssues/LinkedData
Web of Data
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four principles are discussed, there.
Web of Data
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(1)Use URIs to name things on the Web
Web of Data
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and we really mean: use URIs for namingeverything you could think of
Web of Data
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use URIsfor people, fruits, cars, drinks, islands, etc.but also for …
Web of Data
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… abstract things such as love, war, statistics, genes, religion, etc.
Web of Data
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(2)Use HTTP URIsallowing to look-up those names on the Web
Web of Data
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when you d0 an HTTP GET (or: enter a URI into your browser’s address bar :) …
Web of Data
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… ‘something’ is returned – in thebest case this isRDF – and one is happy.
Web of Data
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(3)When someone looks-up a URI, provide useful information
Web of Data
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(4)Include links to other URIs to allow discovery of more things
Web of Data
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these ‘links’ are actuallyRDF propertiesinterpreted as hyperlinks.
foaf:knows
dc:subject
rdfs:seeAlso
Web of Data
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nice idea.but how about reality?
Web of Data
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this is reality!
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Web of Data
http://richard.cyganiak.de/2007/10/lod/
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and is it usedsomewhere as well?
Web of Data
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yes, and very successfully!
Web of Data
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Web of Data
http://wiki.dbpedia.org/DBpediaMobile
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Web of Data
http://faviki.com
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Web of Datahttp://www.w3.org/2005/ajar/tab
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Web of Datahttp://revyu.com
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Web of Data
this sounds really cool. where can I get more of it?
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Web of Data
go to:
http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData
http://community.linkeddata.org/MediaWiki
http://lists.w3.org/Archives/Public/public-lod/
http://www.w3.org/2008/Talks/WWW2008-W3CTrack-LOD.pdf
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Web of Data
upcoming events:http://events.linkeddata.org/iswc2008tutorial/
Linked Data Tutorial at the International Semantic Web Conference 2008
http://webofdata.info/
Web of Data Practitioners Days 2008
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Web of Data
all content is available under
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created by:
http://sw-pp.org/mic.xhtml#i
2008
credits to:
chris bizer, tim berners-lee, richard cyganiak, tom heath, kingsley idehen, yves raimond, and the entire linked data community.