LOD2 Webinar: The 2nd release of the LOD2 stack


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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!


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LOD2 Webinar: The 2nd release of the LOD2 stack

  1. 1. LOD2 is a large-scale integrating project co-funded by the EuropeanCommission within the FP7 Information and Communication TechnologiesWork Programme. This 4-year project comprises leading Linked OpenData technology researchers, companies, and service providers. Comingfrom across 12 countries the partners are coordinated by the AgileKnowledge Engineering and Semantic Web Research Group at theUniversity of Leipzig, Germany.LOD2 will integrate and syndicate Linked Data with existing large-scaleapplications. The project shows the benefits in the scenarios of Media andPublishing, Corporate Data intranets and eGovernment.
  2. 2. Once per month the LOD2 webinar series offer a free webinar abouttools 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.
  3. 3. The LOD2 Stack release 2.0
  4. 4. 1. The LOD2 Stack: What, how, when?2. Demo: enrichment with geospatial coordinates3. Year 3 focus: a specialized LOD2 Stack for the Statistical Office4. Questions
  6. 6. 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
  7. 7. LOD2 stack v3 = 2013 More inter component integration LOD2 stack v2 = 2012More components + more inter component integration 2011 LOD2 stack v1 = Debian repositorySindice Silk 2010 Virtuoso PoolParty D2R Sigma.EE Dbpedia CKAN OntoWiki ORE
  8. 8. 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
  9. 9. 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
  10. 10. 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
  11. 11. 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.
  12. 12. The demo scenario
  13. 13. 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
  14. 14. 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
  15. 15. 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.
  16. 16. The Statistical OfficeSelected 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
  17. 17. example scenario Downloading Cleaning Visualization tabular data RDF RDF Cleaning Enrichment tabular of the Publishing data data Transforming Harmonizing tabular data into DataCube
  18. 18. 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
  19. 19. 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
  20. 20. 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
  21. 21. Jingle R.E.M., Martin Kaltenb ck, Florian KondertCoordination Thomas Thurner Martin Kaltenb ckModeration Martin Kaltenb ckPresented by Bert Van NuffelenLOD2 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 ...
  22. 22. Hope you enjoyed staying with us – if you need more detailedinformation, visit us at www.lod2.eu and let us know how we canimprove 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 ...