Linked Open (meta)Data
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Linked Open (meta)Data Linked Open (meta)Data Presentation Transcript

  • Linked Open (meta)Data Yves Jaques OEKCS FAO of the United Nations
  • Who cares?
    • “ All kinds of conceptual things,
    • they have names now that start with HTTP* ”
    Tim Berners-Lee *(50 billion currently indexed by Google) 24 November2011 KISAF: Linked Open Data
  • Really, why bother?
    • “ I get important information back…some in a standard format…data that somebody might like to know about that thing”
    Tim Berners-Lee 24 November2011 KISAF: Linked Open Data
  • I mean really, why bother?
    • “ And when [that info] has relationships, then the other thing that it's related to is given one of those names that starts with HTTP ”
    Tim Berners-Lee 24 November2011 KISAF: Linked Open Data
  • Okay, everything is connected… 24 November2011 http:// http:// <a href=“http:// <a href=“http:// http:// <a href=“http:// http:// <a href=“http:// KISAF: Linked Open Data
  • But…
    • Web pages are just a mess of formatting
    • The data gets lost
    • Difficult to teach machines to reliably get meaning out of web pages
    24 November2011 KISAF: Linked Open Data
  • Enter Linked Data…
    • Outlined four principles of Linked Data in his Design Issues:
    • Use URIs to identify things
    • Use HTTP URIs so that these things can be referred to and looked up (dereferenced) by people and user agents
    • Provide useful information about the thing when its URI is dereferenced, using standard formats such as RDF/XML
    • Include links to other, related URIs in the exposed data to improve discovery of other related information on the Web
    Tim Berners-Lee 24 November2011 KISAF: Linked Open Data
  • What might it look like? 24 November2011 KISAF: Linked Open Data
  • Under the hood
    • SKOS (Simple Knowledge Organization System)
    • skos:ConceptScheme
      • skos:concept
        • skos:prefLabel
        • skos:altLabel 
        • skos:definition
        • skos:broader
        • skos:narrower
        • skos:related
        • skos:closeMatch
        • skos:exactMatch
    24 November2011 KISAF: Linked Open Data
  • AGROVOC model Nodes and arcs / vertices and edges 24 November2011 KISAF: Linked Open Data
  • The Linked Data cloud 24 November2011 KISAF: Linked Open Data
  • So what? 24 November2011 KISAF: Linked Open Data
    • Break
    • down
    • the
    • silos!
    Parting thought… KISAF: Linked Open Data 24 November2011