This webinar in the course of the LOD2 webinar series will present the release 2.0 of the LOD2 stack, which contains updates to the components Ontowiki, Silk * the assisting sparql editor SPARQLED (DERI), * the LOD enabled Open Refine (previously Google Refine) (ZEMANTA), * the extended version of SILK with link suggestion management from LATC (DERI), * the rdfAuthor library which allows to manage structured information from RDFa-enhanced websites (ULEI), * the SPARQLPROXY which is a PHP based forward proxy for remote access to SPARQL end points (ULEI) Release 2.0 contains also a first contributed debian package for a component which is maintained by a group outside the LOD2 consortium. With the help of ULEI a package for the STANBOL engine (http://stanbol.apache.org/) has been contributed. If you are interested in Linked (Open) Data principles and mechanisms, LOD tools & services and concrete use cases that can be realised using LOD then join us in the free LOD2 webinar series! http://lod2.eu/BlogPost/webinar-series

2. 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.

3. 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.

4. The LOD2 Stack release 2.0

5. 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

6. THE LOD2 STACK RELEASE 2.0

7. The Linked Open Data Life Cycle
Inter-linking/
Fusing
Manual Classifi-
revision/ cation/
authoring Enrichment
Storage/ Quality
Querying Analysis
Evolution /
Extraction
Repair
Search/
Browsing/
Exploration

8. LOD2 stack v3 = 2013
More inter component integration
LOD2 stack v2 = 2012
More components + more inter component integration
2011
LOD2 stack v1 = Debian repository
Sindice Silk 2010
Virtuoso PoolParty
D2R Sigma.EE Dbpedia
CKAN OntoWiki ORE

9. LOD2 stack Release 2 (Year 1)
Silk
Silk-latc (Year 2)
Limes
ontowiki
Sieve
RDFAuthor
PoolParty DL-Learner
sparqlED
sparqlproxy
LOD2
ORE
Virtuoso RDF Store
(conductor,
Stack
sparql, isparql, ods)
Virtuoso
PoolParty
sponger
Extractor
LODgrefine
Dbpedia
stanbol
Spotlight
Semantic
Spatial SigmaEE
D2R valiant
Browser
lod2webapi

11. LOD2 stack contribution process
Debian
Component Component Owner
Package
LOD2 stack maintainer
LOD2 Stack
testing
feedback
• Does the Debian package works?
• Does it break flows | UI ? Valid?
LOD2 Stack
Stable

12. LOD2 stack prerequisites & support
• 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

14. Demo Scenario
• Linked Data has the ability to merge and enrich your data.
• Show that with a few steps this promise comes close to reality.

15. The demo scenario

16. 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

17. The demo scenario
1. Upload the courts from
vocabulary.wolterskluwer.de SPARQLED
PoolParty 2. Extract data from the German DBpedia
3. Link the datasets
4. Exploit the links to Virtuoso
enrich the courts
SILK
5. Display the result
Semantic
Spatial Browser

19. More inter component integration
• The consortium’s goal is higher inter component integration
– Smoothen information flow between components 2012
2012
• 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.

20. The Statistical Office
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

21. example scenario
Downloading Cleaning Visualization
tabular data RDF RDF
Cleaning Enrichment
tabular of the Publishing
data data
Transforming
Harmonizing
tabular data into
DataCube

22. example scenario
Downloading ORE
Cleaning Visualization
tabular data RDF CubeViz
RDF
Sieve
Cleaning
LOD enabled Enrichment
tabular
SILK
of the Publishing
Open Refine CKAN
data Limes
data
Transforming
Harmonizing
PoolParty
tabular data into
DataCube

23. The Serbian Statistical Office using the LOD2 Stack
• 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

25. Publink 2013
• 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

26. 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 ...

27. 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 ...