Enrichment of Library Authority Files by Linked Open Data Sources Gerd Zechmeister Semantic Web Company – http://www.semantic-web.at

Demonstration Scenario Process & Results Summary & Outlook Presentation agenda About us LOD2 Project Demonstration Scenario Process & Results Summary & Outlook © Semantic Web Company – http://www.semantic-web.at/

Based in Vienna (privately held) 20 specialists from several fields About us Based in Vienna (privately held) 20 specialists from several fields Focus: Semantic (web) technologies & search applications 1st project based on semantic technologies in 2001 Foundation of Semantic Web School in 2004  Semantic Web Company GmbH since 2008 PoolParty development started in 2007, on the market since 2009 © Semantic Web Company – http://www.semantic-web.at/

© Semantic Web Company – http://www.semantic-web.at/

PP Thesaurus Manager 2. 4. 1. 3. 5. Each concept in one or many concept schemes Each concept has one URI Each concept has one ore more labels (Poly-)Hierarchical and non-hierachical relations Matching between concepts from various sources © Semantic Web Company – http://www.semantic-web.at/

SKOSsy Select DBPedia categories Choose extraction depth, data to extract and format (TTL, TriG etc.) Extract it and import it into PoolParty as Seed Thesaurus © Semantic Web Company – http://www.semantic-web.at/

Coordinated by the AKSW research group at the University of Leipzig FP7 project (2010-2014) 15 partners (technology researchers, companies and service providers) from 11 European countries plus 1 associated partner from Korea Coordinated by the AKSW research group at the University of Leipzig © Semantic Web Company – http://www.semantic-web.at/

LOD Life-Cycle Management Extraction of RDF from text, XML and SQL Querying and Exploration using SPARQL Authoring of Linked Data using a Semantic Wiki Semi-automatic link discovery between Linked Data sources Knowledge-base Enrichment and Repair © Semantic Web Company – http://www.semantic-web.at/

Demonstration Scenario Alignment Example Data vs LOD resources in SKOS Identification of matching concepts Enrichment Addition of matches to Example Data dump © Semantic Web Company – http://www.semantic-web.at/

Demonstration Scenario Applied tools and frameworks Tool/Framework Function Using SKOS Thesauri as graph/SPARQL endpoint Creating example data as graph/SPARQL endpoint Comparing data to detect matching concepts Extracting categories from DBPedia to import it as Thesaurus into PoolParty © Semantic Web Company – http://www.semantic-web.at/

Demonstration Scenario Example Data Schlagwortnormdatei (SWD = keyword authority file) from DNB data dump 166.414 concepts in German with alignments to LCSH, RAMEAU etc. Expressed in SKOS (hierarchical and associative relations) © Semantic Web Company – http://www.semantic-web.at/

Demonstration Scenario SKOS vocabularies for alignment Standard Thesaurus Economy (STW) 6520 concepts with english/german prefLabel European Union Thesaurus (EUROVOC) 6797 concepts with multilingual prefLabel Extracted concepts from DBPedia via SKOSsy: „Economy“ 13294 concepts in German © Semantic Web Company – http://www.semantic-web.at/

Process & Results: preparational steps Download SWD data dump from DNB server Evaluation SKOS compatibility Transformation SWD data as SPARQL endpoint Vocabulary selection Focus on Economy vocabularies © Semantic Web Company – http://www.semantic-web.at/

Process & Results: Alignment Specification in SILK workbench Define data sources: SWD & EUROVOC Define tasks: compare all skos:prefLabels and deliver all matching links Initiate process and create output file © Semantic Web Company – http://www.semantic-web.at/

SILK Workbench Alignment SWD vs EUROVOC © Semantic Web Company – http://www.semantic-web.at/

SILK Workbench Alignment SWD vs EUROVOC © Semantic Web Company – http://www.semantic-web.at/

Process & Results: Alignment SWD 166414 cs. 3440 matching links 1318 2169 STW 6520 cs. EUROVOC 6797 cs. DPPedia Wirtschaft 13294 cs. © Semantic Web Company – http://www.semantic-web.at/

Process & Results: Enrichment Upload of exactmatches to the SWD graph in Virtuoso © Semantic Web Company – http://www.semantic-web.at/

Process & Results: Enrichment Subject Predicate Object <http://d-nb.info/gnd/4000107-6> <skos:exactMatch> <http://de.dbpedia.org/resource/Abfallwirtschaft> <http://eurovoc.europa.eu/1158> <http://zbw.eu/stw/descriptor/13325-0> © Semantic Web Company – http://www.semantic-web.at/

SWD DBPedia EUROVOC STW © Semantic Web Company – http://www.semantic-web.at/

Process & Results: Enrichment <skos:Concept rdf:about="http://d-nb.info/gnd/4000107-6"> <skos:definition xml:lang="de">Weiter als im Gabler definiert, auch für öffentliche Abfallwirtschaft</skos:definition> <dnb:hasCoordinatedConcept-of> <dnb:CoordinatedConcept> <dnb:coordination-of rdf:resource="http://d-nb.info/ddc-sg/360"/> <dnb:coordination-of rdf:resource="http://d-nb.info/gnd/4000107-6"/> <dnb:det2 rdf:resource="http://d-nb.info/ddc/class/363.728"/> </dnb:CoordinatedConcept> </dnb:hasCoordinatedConcept-of> <skos:related rdf:resource="http://d-nb.info/gnd/4000100-3"/> <skos:related rdf:resource="http://d-nb.info/gnd/4076573-8"/> <dcterms:identifier>(DE-588)040001075</dcterms:identifier> <dcterms:identifier>(DE-588c)4000107-6</dcterms:identifier> <skos:broader rdf:resource="http://d-nb.info/gnd/4220414-8"/> <skos:prefLabel xml:lang="de">Abfallwirtschaft</skos:prefLabel> <skos:exactMatch rdf:resource="http://de.dbpedia.org/resource/Abfallwirtschaft"> <skos:exactMatch rdf:resource="http://eurovoc.europa.eu/1158"> <skos:exactMatch rdf:resource="http://zbw.eu/stw/descriptor/13325-0"> </skos:Concept> © Semantic Web Company – http://www.semantic-web.at/

Playground for future scenarios Summary & Outlook Playground for future scenarios Linked Open Library Data LOD2 technology stack components Further applications Executing tasks for regular updates Link exchange with LOD providers Integration of data and cross-media (e.g. geo-references, images, AV files) Expansion of authority files for cataloguing (e.g. multilingual searches) © Semantic Web Company – http://www.semantic-web.at/

Get in contact! Gerd Zechmeister Research & Development Manager g.zechmeister@semantic-web.at Semantic Web Company GmbH Mariahilfer Strasse 70/8 1070 Vienna - Austria http://www.semantic-web.at/ http://poolparty.biz/ http://twitter.com/semwebcompany © Semantic Web Company – http://www.semantic-web.at/