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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/

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Introduction to linked open data

  • 1. Linked Open Data An extremely high level view! by @asaletourneau July 2011
  • 2. 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)
  • 3. LODLAM http://lod-lam.net/summit/about/ It’s an unconference dude!! http://www.flickr.com/photos/captsolo/5790930338/
  • 4. What does this man and this band have in common? They both appear as linked data on the internet!
  • 5. 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.
  • 6. First things first… An introduction to the semantic web http://youtube.com/watch?v=OGg8A2zfWKg
  • 7. 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/)
  • 8. 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
  • 9. 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
  • 10. Linked Open Data Five Star Rating Scheme http://www.w3.org/DesignIssues/LinkedData.html
  • 11. Linking Open Data cloud diagram http://richard.cyganiak.de/2007/10/lod
  • 12. Examples please of real world applications!!!!!! http://wiki.dbpedia.org/About http://dbpedia.neofonie.de/browse/ http://visualdataweb.org/relfinder/relfinder.php
  • 13. But wait there’s more! http://www.europeana.eu/portal/aboutus.html http://www.europeana.eu http://www.europeana.eu/portal/thoughtlab.html
  • 14. And what about Australia? http://trove.nla.gov.au http://www.powerhousemuseum.com/collection/database/ http://www.opencalais.com/about
  • 15. Opportunities for PROV? http://www.prov.vic.gov.au/online-exhibitions/deeming/story01-murder.htm http://viewer.opencalais.com/
  • 16. Natural Language, Intelligents Agents, Skynet? http://www.wolframalpha.com/about.html
  • 17. 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/