On apples and coconutsMMC Seminar 2013

Seth van Hooland

Picking the low hanging fruit

Why (and when) do we need RDF

Value of URLs

Liberate your metadata

Short and long term action plan

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Worlds shortest course on data modeling

If you had to catalog a pile

of DVDs in 15 minutes,

what would you do ?

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Flat file

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Director Title Actors Date

Jim Jarmusch Dead Man Johny Depp, Gary Farmer 1995

Jim Jarmusch Mystery train Steve Buscemi, Joe Strummer end of the eighties

Jim Jarmush Stranger Than Paradise John Lurie, Eszter Balint ‘84

Etc Etc Etc Etc

Relational database

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Actor

ID

Name

Date of birth

ID Film

Director

ID

Name

Date of birth

ID Film

Films

ID

Title

Date

ID Director

ID Actor

XML

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RDF

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Jim Jarmusch

Dead Man

Johny Depp

New York 1995

Neil Young

lives indirected

performs in

created in

contains the score of

William Blake

refers to

URLs to express subjects, predicates and objects

<http://www.imdb.com/name/nm0000464/>

<http://purl.org/dc/terms/creator>

<http://dbpedia.org/page/limits_of_control>

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Value of a URL

Both identifies and gives access

Difference between encoding ■ «Jim Jarmusch»■ http://www.freebase.com/m/0405l

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Value of a URL

Both identifies and gives access

Difference between encoding ■ «Hilversum»■ http://www.freebase.com/m/0405l

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http://ww3.unipark.de/uc/Metadata/

Action plan

Clean your metadata

Reconcile local vocabs

Mine unstructured metadata

Identify what metadata you can get for

free, but is this sustainable ?

Expose your added-value metadata on

the web, but what business value ?18

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Get in touch !Follow @sethvanhooland and

@freemetadata

Visit freeyourmetadata.org

Mail me on svhoolan@ulb.ac.be