Creating Know le dge
out of Interlinked Data
Vom Web der vernetzten Daten zum Web
vernetzten Wissens
Sören Auer
Wissenserschliessung um Web
19.5.2011
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http://lod2.eu
Creating Know le dge
out of Interlinked Data
LOD 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. Extension of the Web with a
data commons (25B facts
July 2007
April 2008
September 2008
2.
3.
4.
5.
1. Coherence: Relatively few,
vibrant, global RTD
expensively maintained links
community
2. Quality: partly low quality data
and inconsistencies
Industrial uptake begins (e.g.
3. Performance: Still substantial
BBC, Thomson Reuters, Eli
penalties compared to relational
Lilly)
4. Data consumption: large-scale
Emerging governmental
processing, schema mapping
adoption in sight
and data fusion still in its infancy
Establishing Linked Data as a
5. Usability: Establishing direct
deployment path for the
end-user tools and network
Semantic Web.
effect
July 2009
Wissenserschliessung um Web
19.5.2011
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Interlinking/
Fusing
Manual
revision/
authoring
Creating Know le dge
out of Interlinked Data
Storage/
Querying
Classification/
Enrichment
Linked Data
Lifecycle
Challenges
Quality
Analysis
Evolution /
Repair
Extraction
Search/
Browsing/
Exploration
Wissenserschliessung um Web
19.5.2011
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AKSW Data Web Building Blocks
Creating Know le dge
out of Interlinked Data
RDB2RDF
Mapping relational data to RDF
Vakantieland
OntoWiki
Collaborative creation of explicit
knowledge via Semantic Wikis
Building Data Web applications
SoftWiki
DL-Learner
DBpedia
Machine Learning for Ontologies
“Semantification” of
Wikipedia
Distributed, stakeholder driven
Requirements Engineering
OpenResearch.org
ORE
Ontology Enrichment & Repair
LIMES
Link Discovery Framework for
metric spaces
RDF Query Subsumption &
View Maintenance
Scaling triple stores
Foundations
“Semantification” of
OpenStreetMaps
xOperator
Combining Instant Messaging
with the Data Web
Triplify
“Semantification” of (small) Web
Applications
Semantification Syndication
…
Applications
Tools
19.5.2011
Catalogus Professorum
Prosopographical knowledge
base
LESS
Marrying databases with RDF
and ontologies
Wissenserschliessung um Web
A semantic Wiki for the sciences
LinkedGeoData
Bringing the Data Web to
end users
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Creating Know le dge
out of Interlinked Data
Vielen Dank für Ihre Aufmersamkeit!
Sören Auer
http://www.informatik.uni-leipzig.de/~auer/ | http://aksw.org | http://lod2.org
[email protected]
Wissenserschliessung um Web
19.5.2011
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http://lod2.eu
LOD2 in a Nutshell
Creating Know le dge
out 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
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