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Link Source Link Target
Link
http://www.bbc.co.uk/music/artists/ http://dbpedia.org/resource/
e60e1f0b-1e8c-45e7-9d4a-222db9cb34f7#artist owl:sameAs New_Model_Army_(band)
BBC LOD Source DBpedia LOD Source
Assume a link target becomes unavailable - what is the
appropriate reaction at the Link Source?
Ignore Inform the link source?
it?
the data source
itself provides a separate service
update infos providing update
(see Triplify) infos / DSNotify
Monday, June 1, 2009

Semantic Web and Billion Triples Challenge
!!Lots of challenges around
!! identify resolution
!! schema mapping
!! data fusion
!! quality assessment
!!Two tracks
!! Open Track: Applications that provide new levels of Web functionality
!! Billion Triples Track: Demonstrate scalability and use of realistic Web Data
This year: 1 billion crawled triples
!!Submission deadline: October 1, 2009

Alignments for the
linked data web
J´rˆme Euzenat
eo
Send your alignments between data source
Before the end of June
Any format (SQL, SPARQL, OWL, Java, whatever. . . )
Better if everything is available on the web
Jerome.Euzenat@inria.fr

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shared innovation
Talis Connected Commons
• Free data hosting in the Talis Platform!
• For public domain data (CC0 or ODC PDDL)
• Up to 50 Million triples and 10Gb of content, in
perpetuity (want more? come and speak to us)
• Standard Platform data access services, e.g. data
retrieval, text search, faceting, augmentation
• Public SPARQL endpoint for each data set
• http://www.talis.com/platform/cc/

Semantic Markup in the Layered Cake
RDF
XML
http://kwarc.info/projects/krextor/
Christoph Lange (Jacobs University Bremen, Germany) June 3, 2009 1

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What Makes for A Good Ontology?
•! Main Contribution: Avoiding
reclassification of phenomena
–! Allows for cognitive and
computer processing at the
level of category membership
•! Good ontologies provide
universally valid yet specific
categories
•! Category membership should
remain valid
–! Over time
–! Between individuals
–! Across contexts
1

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