LOD2 Webinar: The 2nd release of the LOD2 stack
Post on 27-Jan-2015
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LOD2 is a large-scale integrating project co-funded by the European
Commission within the FP7 Information and Communication Technologies
Work Programme. This 4-year project comprises leading Linked Open
Data technology researchers, companies, and service providers. Coming
from across 12 countries the partners are coordinated by the Agile
Knowledge Engineering and Semantic Web Research Group at the
University of Leipzig, Germany.
LOD2 will integrate and syndicate Linked Data with existing large-scale
applications. The project shows the benefits in the scenarios of Media and
Publishing, Corporate Data intranets and eGovernment.
Once per month the LOD2 webinar series offer a free webinar about tools and services along the Linked Open Data Life Cycle. Stay with us and learn more about acquisition, editing, composing, connected applications – and finally publishing Linked Open Data.
The LOD2 Stack release 2.0
1. The LOD2 Stack: What, how, when?
2. Demo: enrichment with geospatial coordinates
3. Year 3 focus: a specialized LOD2 Stack for the Statistical Office
4. Questions
THE LOD2 STACK RELEASE 2.0
The Linked Open Data Life Cycle
Inter-linking/ Fusing
Classifi-cation/
Enrichment
Quality Analysis
Evolution / Repair
Search/ Browsing/
Exploration
Extraction
Storage/ Querying
Manual revision/ authoring
LOD2 stack v1 = Debian repository
LOD2 stack v2 = More components + more inter component integration
2010 Sindice Silk
Virtuoso PoolParty
D2R Sigma.EE Dbpedia
CKAN OntoWiki ORE
2011
2012
LOD2 stack v3 = More inter component integration
2013
LOD2 stack Release 2
Virtuoso RDF Store (conductor,
sparql, isparql, ods)
Virtuoso sponger
lod2webapi
RDFAuthor
Limes
ORE
D2R
Semantic Spatial
Browser
sparqlproxy
SigmaEE
ontowiki
LODgrefine
Silk Silk-latc
stanbol
valiant
Dbpedia Spotlight
sparqlED
PoolParty
Sieve
PoolParty Extractor
LOD2
Stack
DL-Learner
(Year 1)
(Year 2)
LOD2 stack contribution process
Component Debian Package Component Owner
LOD2 Stack testing
LOD2 Stack Stable
Valid?
feedback • Does the Debian package works?
• Does it break flows | UI ?
LOD2 stack maintainer
• The component providers are responsible for the Debian package
– the knowledge and experience with packaging increases
– Improves the overall quality of the individual components
• The LOD2 stack standardizes on Ubuntu 12.04 LTS, Precise edition
– Other Linux distributions are in principle possible
– Our partner I2G, Poland, successfully installed a version on Debian
• Requires 2GB RAM, better at least 4GB
– Many components are tomcat based web-apps
– Footprint can be reduced by only installing the needed applications for your case
• Technical feedback on the stack via support-stack@lod2.eu
LOD2 stack prerequisites & support
• Linked Data has the ability to merge and enrich your data.
• Show that with a few steps this promise comes close to reality.
Demo Scenario
The demo scenario
The demo scenario
1. Upload the courts from vocabulary.wolterskluwer.de
2. Extract data from the German DBpedia
3. Link the datasets
4. Exploit the links to enrich the courts
5. Display the result
PoolParty
The demo scenario
SILK
Semantic Spatial Browser
SPARQLED
Virtuoso
1. Upload the courts from vocabulary.wolterskluwer.de
2. Extract data from the German DBpedia
3. Link the datasets
4. Exploit the links to enrich the courts
5. Display the result
• The consortium’s goal is higher inter component integration
– Smoothen information flow between components
• It is a challenge!
– Integration in a general context does not lead to high end-user satisfaction
• Focus on one domain
– Create supportive end-user process flows for this case
– They will be described and very likely many of them are applicable for other domains.
More inter component integration
2012 2012
Selected because …
• many partners deal with statistical data in their projects – The LOD2 consortium is involved in all key aspects:
• standarization of the schema (DataCube)
• publishing statistical data (e.g. http://eurostat.linked-statistics.org,
http://scoreboard.lod2.eu, http://rs.ckan.net/dataset?q=rdf )
• Tools (e.g. Cubeviz)
• real world statistical data is accessible for experimentation
• it offers excellent potential to combine components from LOD2 stack
• the data integration capabilities of RDF can be exploited
• the Linked Data paradigm is an enabler to go beyond classical statistics
management
The Statistical Office
example scenario
Downloading tabular data
Cleaning tabular
data
Harmonizing tabular data
Transforming into
DataCube
Enrichment of the data
Cleaning RDF
Visualization RDF
Publishing
example scenario
Downloading tabular data
Cleaning tabular
data
Harmonizing tabular data
Transforming into
DataCube
Enrichment of the data
Cleaning RDF
Visualization RDF
Publishing
CubeViz
LOD enabled Open Refine
PoolParty
SILK Limes
ORE Sieve
CKAN
• Our partner IMP collaborates with the Serbian National Statistical Office to
make their information available to the public as Linked Data.
• The next video demonstrates how LOD2 Stack components are used
The Serbian Statistical Office using the LOD2 Stack
• Free Linked Open Data Consultancy for government related organizations – provides your organization with information and coaching around publishing Linked Open Data
• More details & application info at http://lod2.eu/Article/Publink.html
Publink 2013
Jingle R.E.M., Martin Kaltenb ck, Florian Kondert
Coordination Thomas Thurner
Martin Kaltenb ck
Moderation Martin Kaltenb ck
Presented by Bert Van Nuffelen
LOD2 STACK is realized by the effort from many persons in the LOD2 consortium:
Sebastian T, Valentina, Uros, Vuk, Helmut, Hugh, Robert, Mateja, Jan and many more ...
Hope you enjoyed staying with us – if you need more detailed information, visit us at www.lod2.eu and let us know how we can improve to meet your expectations! Don’t forget to register for our next webinar Jan 2013 - Zemanta feb 2013 – CKAN and publicdata.eu (Open Knowledge Foundation) Have a great day and don’t forget ...
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