Introduction to linked open data
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Introduction to linked open data

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Here's some things I have learned about the Semantic Web.

Here's some things I have learned about the Semantic Web.

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Introduction to linked open data Introduction to linked open data Presentation Transcript

  • Linked Open Data
    An extremely high level view!
    by
    @asaletourneau
    July 2011
  • So what is it?
    Simply put (by someone else):
    “The expression ‘Linked Data’ is used to describe a method of exposing, sharing, and connecting data on the web”
    (http://consulting.talis.com/case-study/ordnace-survey-open-data)
  • LODLAM
    http://lod-lam.net/summit/about/
    It’s an unconference dude!!
    http://www.flickr.com/photos/captsolo/5790930338/
  • What does this man and this band have in common?
    They both appear as linked data on the internet!
  • What do these two things have in common?
    Melbourne
    Bearbrass
    They are different names for the same geographic location, and they appear on the internet as linked open data...but I digress.
  • First things first…
    An introduction to the semantic web
    http://youtube.com/watch?v=OGg8A2zfWKg
  • Some insightful words on linked open data by Dr Tim Sherratt
    http://www.slideshare.net/wragge/a-hopefully-fairly-painless-introduction-to-linked-open-data
    http://discontents.com.au/foaf.rdf
    (Tim’s explanation of the ‘things’ he’s about using the foaf ontology)
    http://ow.ly/i/dZWu/original
    (my visualisation of the foaf excerpt above using http://semweb.salzburgresearch.at/apps/rdf-gravity/)
  • How do we describe data e.g. people, places, events, thoughts, feelings, images, twitter accounts to a machine?
    We need ontologies, formats, a way of uniquely identifying things, and a way of making these things discoverable over the internet
    If we do this we can start to make assertions about things that describe them in terms that machines can understand
    Then machines can help us link all this data together so that the internet becomes one big global database of human knowledge
  • Ontologies?
    http://schemapedia.com
    Formats?
    RDF describes resources with classes, properties, and values
    e.g. Asa is a person with a weight of x kgs
    http://www.w3schools.com/rdf/rdf_intro.asp
  • Linked Open Data Five Star Rating Scheme
    http://www.w3.org/DesignIssues/LinkedData.html
  • Linking Open Data cloud diagram
    http://richard.cyganiak.de/2007/10/lod
  • Examples please of real world applications!!!!!!
    http://wiki.dbpedia.org/About
    http://dbpedia.neofonie.de/browse/
    http://visualdataweb.org/relfinder/relfinder.php
  • But wait there’s more!
    http://www.europeana.eu/portal/aboutus.html
    http://www.europeana.eu
    http://www.europeana.eu/portal/thoughtlab.html
  • And what about Australia?
    http://trove.nla.gov.au
    http://www.powerhousemuseum.com/collection/database/
    http://www.opencalais.com/about
  • Opportunities for PROV?
    http://www.prov.vic.gov.au/online-exhibitions/deeming/story01-murder.htm
    http://viewer.opencalais.com/
  • Natural Language, Intelligents Agents, Skynet?
    http://www.wolframalpha.com/about.html
  • Other Resources
    http://tomheath.com/papers/bizer-heath-berners-lee-ijswis-linked-data.pdf
    http://www.cdlib.org/services/dsc/technical.html
    http://blogs.ukoln.ac.uk/locah/2010/07/
    http://archiveshub.ac.uk/system/
    http://www.slideshare.net/tinglebrian/snac-dh2011june2011
    http://xtf.cdlib.org/
    http://openspring.net/sites/openspring.net/files/corl-etal-2009iswc.pdf
    http://thatcamp.org/