1. Creating Knowledge out of Interlinked Data
LOD2 – Creating Knowledge out of
Interlinked Data
Sören Auer
http://lod2.eu
EU-FP7 LOD2 Project Overview . Page 1 http://lod2.eu

2. Open Data is more usefull when ist
Creating Know l e dge
out of Interlinked Data
linked!!!
Problem: Try to search for these things on the current Web:
• Apartments near German-Russian bilingual childcare in Berlin.
• ERP service providers with offices in Vienna and London.
• Researchers working on multimedia topics in Eastern Europe.
Information is available on the Web, but opaque to current search.
Solution: complement text on Web pages with structured linked
open data & intelligently combine/integrate such structured
information from different sources:
HTML
Search engine HTML
RDF
RDF
Web Web
data.berlin.de server Immobilienscout.de server
Has everything about Knows all about real estate
childcare in Berlin. DB offers in Germany DB
Sören Auer – The Data Web Page 2 http://lod2.eu

3. Creating Knowledge out of Interlinked Data
TimBL’s 5-star plan for open data
★ Make your data available on the Web
under an open license
★★ Make it available as structured
data
(Excel sheet instead of image scan of a table)
★★★ Use a non-proprietary format
(CSV file instead of an Excel sheet)
★★★★ Use Linked Data format
(URIs to identify things, RDF to represent data)
★★★★★ Link your data to other
people’s data to provide
context
More: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
EU-FP7 LOD2 Project Overview . Page 3 http://lod2.eu

4. Creating Knowledge out of Interlinked Data
Inter-
linking/
Fusing
The Linked Manual Classifi-
revision/ cation/
Data Lifecycle authoring Enrichment
Storage/
Linked Data Quality
Querying
Lifecycle Analysis
Challenges
Evolution /
Extraction Repair
Search/
Browsing/
Exploration
EU-FP7 LOD2 Project Overview . Page 4 http://lod2.eu

5. Creating Knowledge out of Interlinked Data
LOD2 in a Nutshell (1)
Research Focus
 very large RDF data
management
 knowledge enrichment &
interlinking
 fusion & information
quality
 adaptive, semantic user
interfaces
Use Cases
 Media & Publishing
 Enterprise Data Webs
 Open Gov Data
 Public Sector Contracts
Main Result
 integrated LOD2 Stack for
Linked Data lifecycle
management
Partners
ULEI, CWI, NUIG, FUB/UMA,
SWCG, OGL, Tenforce, Exalead,
WKD, OKFN, UEP, ZEM, I2G,
EU-FP7 LOD2 Project Overview . 31.08.2012 . Page 5 http://lod2.eu

6. Creating Knowledge out of Interlinked Data
WP9: Open Government Data Use Case
publicdata.eu - find and reuse >17,000 datasets from 18 regional and national data
catalogs across Europe from a single place
For:
 Data literate citizens
 Data journalists
 Policy experts
 Decision makers
 Mobile & web developers
 Academics / researchers
 Public bodies
 Companies
 Civic society / NGOs  Exchange of metadata between different data catalogues
 Aggregate datasets from existing data catalogues
 ...
 Creating a European community of reusers to improve metadata
 Creating mechanisms for capturing derived / related datasets
 Bridge language and topical gaps to associate related information
EU-FP7 LOD2 Project Overview . Page 6 http://lod2.eu

7. Creating Knowledge out of Interlinked Data
European Data Forum PUBLINK
• meeting place for industry, • free PUBLINK Linked
research, policymakers and Open Data
community initiatives to Consultancy to up to 5
discuss the challenges of selected organizations
the emerging Data supporting them with the
Economy publishing of Linked
• Follows EU Presidency: Open Data with an effort
next EDF April 9-10 2013 of 10-20 days from
in Dublin LOD2 partners
• http://data-forum.eu • Next call in October
• http://lod2.eu/Article/Pub
link.html
EU-FP7 LOD2 Project Overview . Page 7 http://lod2.eu

8. Creating Knowledge out of Interlinked Data
WP12: Fact Sheet (2)
Consortium – 15 Partners from 11 European Countries + 1 Associated Partner from
Korea
Universität Leipzig (Coordinator), Centrum Wiskunde & National University of Ireland in
Germany Informatica, Netherlands Galway, Irland
Freie Universität
OpenLink Software, Semantic Web Company,
Berlin/Universität Mannheim,
United Kingdom Austria
Germany
TenForce, Exalead, Wolters Kluwer Deutschland,
Belgium France Germany
Open Knowledge Foundation, Vysoka Škola Ekonomická v Zemanta d.o.o.,
United Kingdom Praze, Czech Republic Slovenia
Korea Advanced Institute of
Instytut Informatyki Institut Mihajlo Pupin,
Science and Technology,
Gospodarczej, Poland Serbia
South Korea
EU-FP7 LOD2 Project Overview . 31.08.2012 . Page 8 http://lod2.eu

9. Creating Knowledge out of Interlinked Data
Contact
Address Coordinator
University of Leipzig Dr Sören Auer
Faculty of Mathematics and Computer Science Scientific Project Leader
Department of Computer Science Phone: +49 (341) 97-32367
Institute of Business Information Systems
Fax: +49 (341) 97-32329
Postfach 100920 Email: auer@uni-leipzig.de
04009 Leipzig http://www.informatik.uni-leipzig.de/~auer
Germany
Nadine Jänicke
Project Manager
Phone: +49 (341) 97-32332
Fax: +49 (341) 97-32329
Email: jaenicke@uni-leipzig.de
http://bis.informatik.uni-leipzig.de/NadineJaenicke
Thanks for your attention! http://lod2.eu
LOD2 Title . 02.09.2010 . Page 9 http://lod2.eu