Transcript 3 rd : start merging your data - V-ICT-OR

Open (Linked) Data
[email protected]
Linked Data tell more
http://www.proxml.be/
the Web
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Open Data
Open Data
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Definition
•"Open
data is data that can be freely
used, reused and redistributed by
anyone - subject only, at most, to the
requirement to attribute and sharealike."
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Reasons
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Reasons NOT to open
containing information about specific
individuals
costs
risks
national security
¬ fraude
¬
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Make the data available: bulk
in an open machine-readable format
source: http://www.peterkrantz.com/
"existing procedures and datasets aren't created, managed, or
distributed in an open fashion. This means that the data's probably
incomplete, the documentation is not great, the systems it lives on are
built for internal use only, and there's no formal process around
managing and distributing updates. It costs money and time to figure
out the new processes, build or buy the new systems, and train the
staff."
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Which data format?
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API's
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Make the data available: via
API
in an open machine-readable format
source: http://www.peterkrantz.com/
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Via an API
source: http://www.peterkrantz.com/
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Which data format?
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Linked Open Data
Linked Data: 4 rules
Use URIs as names for things
Use HTTP URIs so that people can
look up those names
When someone looks up a URI,
provide useful information (RDF)
Include links to other HTTP URIs so
that they can discover more things
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Defining URI's
⓵
http://www.rubenianum.be/book/2195
⓶
http://www.rubenianum.be/book/2195.html
⓷
http://www.rubenianum.be/book/2195.rdf
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Defining URI's
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st
1 :
Export your data as a set of relations
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2nd: Export your second set of data
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3rd: start merging your data
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3rd: start merging your data (cont’d)
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4th: Merge identical resources
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5th: Query the merged data set
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Status
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Eurovoc
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Eurovoc
SPARQL endpoint by Semantic Web Company
http://www.semantic-web.at/ using PoolParty
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Using Eurovoc
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Inferencing
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SPARQL federated search
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Conclusion
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