Lod2

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  • Enabling large-scale interoperability based on Linked Data is a necessary precondition in the media industry to profit from the benefits of distributed information sources on the Semantic Web. (income, costs, efficiency, etc)
  • MonetDB:run-time query optimization framework which provides a unique environment to crack the recursive-correlated-self-join queries caused by semantic web queries to triple stores SEMF:The framework allows taxonomic and non-taxonomic concept matching techniques to be applied to selected object properties
  • Lod2

    1. 1. www.lod2.eu© Copyright 2012 STI INNSBRUCK www.sti-innsbruck.at www.sti-innsbruck.at
    2. 2. 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€ www.sti-innsbruck.at
    3. 3. 3 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) www.sti-innsbruck.at
    4. 4. 4 LOD2 – Use Cases Media Enterprise Citizen – & Data Web publicdata.eu Publishing • Procedures Increase public access The media for data input to high-value, use case that integrate machine- aims to semantic readable data improve features and sets access to annotations generated by high-quality, early in the the European, machine- ingestion national as readable process of well as www.sti-innsbruck.at
    5. 5. 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 www.sti-innsbruck.at
    6. 6. 6 LOD2 Lifecycle DL- Learner OntoWiki WIQA Silk LIMES Virtuoso MonetDB Sig.ma Triplify D2R ORE www.sti-innsbruck.at
    7. 7. 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 www.sti-innsbruck.at
    8. 8. 8 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 sources www.sti-innsbruck.at
    9. 9. 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 www.sti-innsbruck.at
    10. 10. 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 www.sti-innsbruck.at
    11. 11. 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/ www.sti-innsbruck.at

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