Soeren okfn greece meetup


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Dr. Sören Auer (OKFN Advisor Board, LOD2 EU project Coordinator) Linked Data Challenges LOD2 Project Results (15 minutes

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Soeren okfn greece meetup

  1. 1. Linked Data Challenges & LOD2 Sören Auer Universität Leipzig & OKFN Germany
  2. 2. The best way to get value from data is to give it away in standardized formats.
  3. 3. Linked Data exampleSören Auer The Semantic Data Web 3 23.8.2011 Page 3
  4. 4. The emerging Web of Data achievements and challenges• Web - a global, distributed platform for data, information and knowledge integration• exposing, sharing, and connecting pieces of data, information, and knowledge on the Semantic Web using URIs and RDF Achievements Challenges 1. Coherence: Relatively few, 1. Extension of the Web with expensively maintained links a data commons (currently 2. Quality: partly low quality data amounting 35 Billion facts)July 2007 April 2008 September 2008 and inconsistencies 2. vibrant, global RTD 3. Performance: Still substantial community penalties compared to relational 3. Industrial uptake begins 4. Data consumption: large-scale (e.g. BBC, Thomson processing, schema mapping Reuters, Eli Lilly) and data fusion still in its infancy 4. Emerging governmental 5. Usability: Missing direct end- adoption in sight user tools and network effect 5. Establishing Linked Data as a deployment path for the These issues are closely related Semantic Web. and should ultimately lead to an ecosystem of interlinked July 2009 knowledge!
  5. 5. The Linked Data Lifecycle Inter- linking/ Fusing Manual Classifi- revision/ cation/ authoring Enrichment Storage/ Linked Data Quality Querying Lifecycle Analysis Challenges Evolution / Extraction Repair Search/ Browsing/ Exploration
  6. 6. LOD2 in a NutshellCreating Know le dgeout of Interlinked Data Research focus • Very large RDF data management • Enrichment & Interlinking • Fusion & Information Quality • Adaptive UI interfaces Use Cases • Media & Publishing • Enterprise Data Webs • Open Gov Data Partners Uni Leipzig, DERI Galway, FU Berlin, Semantic Web Company, OpenLink, Tenforce, Exalead, Wolters Kluwer, OKFN, IMP, Zemanta, I2G, UEP Sören Auer – The Semantic Data Web 14.7.2011 Page 6
  7. 7. Creating Knowledge out of Interlinked Data LOD2 Stack Inter-linking/ Fusing Manual revision/ SILK Classifi-cation/ Enrichment authoring OntoWiki Storage/ Quality Querying Virtuoso Analysis DLlearne D2R r Evolution / Extraction sindice Repair Search/ Browsing/ ExplorationDas Web der Daten für Unternehmen . 07.04.2011 . Page 7
  8. 8. Creating Knowledge out of Interlinked Data LOD2 stack repository:• The LOD2 stack repository • HOWTO start • HOWTO contribute• From scratch (most system knowledge required)• From downloadable Virtual machines• Online: Das Web der Daten für Unternehmen . 07.04.2011 . Page 8
  9. 9. Creating Knowledge out of Interlinked Data WP1: Task 1.1 Common requirements analysis and specificationTask 1.3 Early Stack Prototype (M6 12) Web der Daten für Unternehmen . 07.04.2011 . Page 9
  10. 10.•• München Open Government Day• Offener Haushalt• Frankfurt gestalten• Frag den Staat• Apps für Deutschland• Berlin Open Data Day• Open Aid Data• Open Data Hackdays
  11. 11. Thanks!• Sören Auer• Research Group AKSW/Uni Leipzig,•• Open Knowledge Foundation Deutschland,