Quick Linked Data Introduction

a quick intro intolinked data

Web of Documents

from humansfor humans

Web of Documents

Web of Documents

and machines? not really welcome …

then, in 1998, an idea took shape: linked data, by Tim Berners-Lee.

http://www.w3.org/DesignIssues/LinkedData

linkDATA

rather thanDOCUMENTS

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but wait. haven’t we been doing that for years, now?

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we have CSV, relational data, XML, key-value data, etc.

Web of Data

true. but it’s not about the surface or exchange syntax.

Web of Data

actually it isabout a data (RDF)

and naming (URI)

model on the Web.

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back to Tim’s note from ‘98http://www.w3.org/DesignIssues/LinkedData

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four principles are discussed, there.

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(1)Use URIs to name things on the Web

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and we really mean: use URIs for namingeverything you could think of

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use URIsfor people, fruits, cars, drinks, islands, etc.but also for …

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… abstract things such as love, war, statistics, genes, religion, etc.

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(2)Use HTTP URIsallowing to look-up those names on the Web

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when you d0 an HTTP GET (or: enter a URI into your browser’s address bar :) …

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… ‘something’ is returned – in thebest case this isRDF – and one is happy.

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(3)When someone looks-up a URI, provide useful information

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(4)Include links to other URIs to allow discovery of more things

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these ‘links’ are actuallyRDF propertiesinterpreted as hyperlinks.

foaf:knows

dc:subject

rdfs:seeAlso

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nice idea.but how about reality?

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this is reality!

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http://richard.cyganiak.de/2007/10/lod/

and is it usedsomewhere as well?

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yes, and very successfully!

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Web of Data

http://wiki.dbpedia.org/DBpediaMobile

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http://faviki.com

Web of Datahttp://www.w3.org/2005/ajar/tab

Web of Datahttp://revyu.com

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this sounds really cool. where can I get more of it?

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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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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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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.