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lod2.eu

www.lod2.eu. 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

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lod2.eu

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  1. www.lod2.eu

  2. 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€

  3. LOD2 Consortium Universität Leipzig (Germany) Centrum Wiskunde & Informatica(Netherlands) National University of Ireland in Galway (Ireland) FreieUniversitätBerlin (Germany) OpenLinkSoftware (United Kingdom) Semantic Web Company (Austria) TenForce (Belgium) Exalead(France) Wolters Kluwer Deutschland (Germany) Open Knowledge Foundation (United Kingdom) Institute MihajloPupin (Serbia) KAIST (Korea) Zemantad.o.o. (Canada) InstytutInformatykiGospodarczej(Poland) University of Economics (Czech Republic)

  4. LOD2 – Use Cases 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. 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.

  5. 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

  6. LOD2 Lifecycle DL-Learner OntoWiki WIQA SilkLIMES VirtuosoMonetDB Sig.ma TriplifyD2R ORE

  7. 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

  8. LOD2 Technology stack • OntoWiki: facilitates the visual presentation of a knowledge base as an information map • DBpediaExtraction: 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 sources

  9. 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

  10. 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

  11. 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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