introduction to linked open data
DESCRIPTION
Here's some things I have learned about the Semantic Web.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?
MelbourneBearbrass
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 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/