introduction to linked open data
DESCRIPTION
Here's some things I have learned about the Semantic Web.TRANSCRIPT
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Linked Open Data
An extremely high level view!
by@asaletourneau
July 2011
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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)
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LODLAM
http://lod-lam.net/summit/about/
It’s an unconference dude!!
http://www.flickr.com/photos/captsolo/5790930338/
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What does this man and this band have in common?
They both appear as linked data on the internet!
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What do these two things have in common?
MelbourneBearbrass
They are different names for the same geographic location, and they appear on the internet as linked open data...but I digress.
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First things first…
An introduction to the semantic web
http://youtube.com/watch?v=OGg8A2zfWKg
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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/)
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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
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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
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Linked Open Data Five Star Rating Scheme
http://www.w3.org/DesignIssues/LinkedData.html
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Linking Open Data cloud diagram
http://richard.cyganiak.de/2007/10/lod
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Examples please of real world applications!!!!!!
http://wiki.dbpedia.org/About
http://dbpedia.neofonie.de/browse/
http://visualdataweb.org/relfinder/relfinder.php
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But wait there’s more!
http://www.europeana.eu/portal/aboutus.html
http://www.europeana.eu
http://www.europeana.eu/portal/thoughtlab.html
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And what about Australia?
http://trove.nla.gov.au
http://www.powerhousemuseum.com/collection/database/
http://www.opencalais.com/about
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Opportunities for PROV?
http://www.prov.vic.gov.au/online-exhibitions/deeming/story01-murder.htm
http://viewer.opencalais.com/
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Natural Language, Intelligents Agents, Skynet?
http://www.wolframalpha.com/about.html
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Other Resourceshttp://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/