The document discusses the LOD2 project which aims to create knowledge from interlinked open data. It focuses on very large RDF data management, knowledge enrichment through interlinking data from different sources, and developing semantic user interfaces. The project uses use cases in media, enterprise, open government data, and public sector contracts. The goal is to develop an integrated Linked Data lifecycle management stack.

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