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

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

3. 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  Semantic Web Company GmbH since 2008
PoolParty development started in 2007, on the market since 2009
© Semantic Web Company –

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

5. 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 –

6. 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 –

7. Coordinated by the AKSW research group at the University of Leipzig
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
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 –

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
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 –

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“
13294 concepts in German
© Semantic Web Company –

13. 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 –

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 Alignment SWD vs EUROVOC
© Semantic Web Company –

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

17. Process & Results: Alignment
SWD
cs.
3440 matching links
1318
2169
STW
6520 cs.
EUROVOC
6797 cs.
DPPedia
Wirtschaft
13294 cs.
© Semantic Web Company –

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

19. Process & Results: Enrichment
Subject
Predicate
Object
<
<skos:exactMatch>
<
<
<
© Semantic Web Company –

20. SWD DBPedia EUROVOC STW
© Semantic Web Company –

21. Process & Results: Enrichment
<skos:Concept rdf:about="
<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="
<dnb:coordination-of rdf:resource="
<dnb:det2 rdf:resource="
</dnb:CoordinatedConcept>
</dnb:hasCoordinatedConcept-of>
<skos:related rdf:resource="
<skos:related rdf:resource="
<dcterms:identifier>(DE-588) </dcterms:identifier>
<dcterms:identifier>(DE-588c) </dcterms:identifier>
<skos:broader rdf:resource="
<skos:prefLabel xml:lang="de">Abfallwirtschaft</skos:prefLabel>
<skos:exactMatch rdf:resource="
<skos:exactMatch rdf:resource="
<skos:exactMatch rdf:resource="
</skos:Concept>
© Semantic Web Company –

22. 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 –

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