www.sti-innsbruck.at © copyright 2012 sti innsbruck
TRANSCRIPT
www.sti-innsbruck.at © Copyright 2012 STI INNSBRUCK www.sti-innsbruck.at
www.lod2.eu
www.sti-innsbruck.at
LOD2 in a Nutshell
Goal: Making Linked Data the model of choice for next-generation IT systems and applications.
Research focus:
Very large RDF data management
Enrichment & Interlinking
Fusion & Information Quality
Adaptive UI interfaces
September 2010 – October 2014: 10.2 M€
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LOD2 Consortium
Universität Leipzig (Germany)
Centrum Wiskunde & Informatica (Netherlands)
National University of Ireland in Galway (Ireland)
Freie Universität Berlin (Germany)
OpenLink Software (United Kingdom)
Semantic Web Company (Austria)
TenForce (Belgium)
Exalead (France)
Wolters Kluwer Deutschland (Germany)
Open Knowledge Foundation (United Kingdom)
Institute Mihajlo Pupin (Serbia)
KAIST (Korea)
Zemanta d.o.o. (Canada)
Instytut Informatyki Gospodarczej (Poland)
University of Economics (Czech Republic)
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LOD2 – Use Cases
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Media & Publishing
The media use case aims to improve access to high-quality, machine-readable data sets generated by publishing houses for their customers.
Enterprise Data Web
• Procedures for data input that integrate semantic features and annotations early in the ingestion process of data.
• Impact of the LOD2 platform in the activity of the corporation.
Citizen – publicdata.eu
Increase public access to high-value, machine-readable data sets generated by the European, national as well as regional governments and public administrations.
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LOD2 Technology stack
Integrated distribution of aligned tools which support the life-cycle of Linked (Open) Data
Extraction, authoring/creation over enrichment, interlinking, fusing, visualization and maintenance
The stack comprises tools from the LOD2 partners and third parties
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LOD2 Lifecycle
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TriplifyD2R
VirtuosoMonetDB
OntoWiki
SilkLIMES
WIQA
ORE
Sig.ma
DL-Learner
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LOD2 Technology stack
• D2R Server: publishing the content of relational databases on the
Semantic Web
• MonetDB: high-performance database system that allows to store
relational, XML and RDF data
• Triplify: “semantification” of Web applications by making database
content available as RDF, JSON or Linked Data
• OpenLink Virtuoso: Data Management & Integration (SQL, XML and
EII), Application Integration (Web Services & SOA), Process
Management & Integration (BPEL), Distributed Collaborative
Applications
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LOD2 Technology stack
• OntoWiki: facilitates the visual presentation of a knowledge base as an
information map
• DBpedia Extraction: extracts structured information from Wikipedia
and to make this information available on the Web
• DL-Learner: supervised Machine Learning in OWL and Description
Logics. It can be used to learn classes in OWL ontologies from selected
objects
• SemMF: calculating semantic similarity between objects that are
represented as arbitrary RDF graphs
• Silk Framework: generating RDF links between data items within
different data sources8
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LOD2 Technology stack
• PoolParty: thesaurus management system, associating concepts to
unstructured data
• Sig.ma: Web of Data browser, embeddable widget, semantic API
• Comprehensive Knowledge Archive Network (CKAN): registry
system for datasets or other knowledge resources
• Sindice: process, consolidate and query the Web of Data
• Sparallax: faceted browsing interface for SPARQL endpoints, based on
Freebase Parallax
• WIQA: quality assessment policies to filter information from the Web
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LOD2 Technology stack
Intermediate LOD2 stack release March 2012:
• LIMES: link discovery framework for the Web of Data
• Valliant: XML to RDF document processing tool
• Spatial Semantic Browser : widget for geospatial RDF data
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References
LOD2 documentation: http://wiki.lod2.eu/display/LOD2DOC/Home
LOD2 stack demo: http://demo.lod2.eu/lod2demo
LIMES: http://aksw.org/Projects/LIMES?v=z1l
DL-Learner: http://dl-learner.org/Projects/DLLearner
Sindice: http://sindice.com
CKAN: http://thedatahub.org/
OntoWiki: http://ontowiki.net/Projects/OntoWiki
MonetDB: http://www.monetdb.org
OpenLink Virtuoso: http://virtuoso.openlinksw.com/
Triplify: http://triplify.org
Sparallax: http://sparallax.deri.ie/
D2RQ: http://d2rq.org/
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