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Enrichment of Library Authority Files by Linked Open Data Sources Gerd Zechmeister Semantic Web Company –

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Presentation on theme: "Enrichment of Library Authority Files by Linked Open Data Sources Gerd Zechmeister Semantic Web Company –"— Presentation transcript:

1 Enrichment of Library Authority Files by Linked Open Data Sources Gerd Zechmeister Semantic Web Company –

2 Presentation agenda 1.About us 2.LOD2 Project 3.Demonstration Scenario 4.Process & Results 5.Summary & Outlook © Semantic Web Company –

3 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 –

4 4

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

6 SKOSsy © Semantic Web Company – Select DBPedia categories Choose extraction depth, data to extract and format (TTL, TriG etc.) Extract it and import it into PoolParty as Seed Thesaurus

7 FP7 project ( ) 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 –

8 LOD Life-Cycle Management © Semantic Web Company – 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

9 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 –

10 Demonstration Scenario Applied tools and frameworks © Semantic Web Company – Tool/FrameworkFunction 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

11 Demonstration Scenario Example Data –Schlagwortnormdatei (SWD = keyword authority file) from DNB data dump – concepts in German with alignments to LCSH, RAMEAU etc. –Expressed in SKOS (hierarchical and associative relations) © Semantic Web Company –

12 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“ concepts in German © Semantic Web Company –

13 Process & Results: preparational steps 1.Download –SWD data dump from DNB server 2.Evaluation –SKOS compatibility 3.Transformation –SWD data as SPARQL endpoint 4.Vocabulary selection –Focus on Economy vocabularies © Semantic Web Company –

14 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 –

15 SILK Workbench © Semantic Web Company – Alignment SWD vs EUROVOC

16 SILK Workbench © Semantic Web Company – Alignment SWD vs EUROVOC

17 Process & Results: Alignment © Semantic Web Company – SWD cs. STW 6520 cs. EUROVOC 6797 cs. DPPedia Wirtschaft cs matching links

18 Process & Results: Enrichment © Semantic Web Company – Upload of exactmatches to the SWD graph in Virtuoso

19 Process & Results: Enrichment © Semantic Web Company – SubjectPredicateObject

20 © Semantic Web Company – SWD DBPedia EUROVOC STW

21 Process & Results: Enrichment © Semantic Web Company – Weiter als im Gabler definiert, auch für öffentliche Abfallwirtschaft (DE-588) (DE-588c) Abfallwirtschaft

22 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 –

23 Get in contact! © Semantic Web Company – Semantic Web Company GmbH Mariahilfer Strasse 70/ Vienna - Austria Gerd Zechmeister Research & Development Manager


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