1. 24 November 20111 1 CERL Thesaurus

2. 24 November 20112 CERL Thesaurus Started as a compensation for the lack of global authority control within the HPB Collection of multilingual authority files and headings Contains names –from imprints, –of persons, –places and –corporate bodies Aims to include authority files of all HPB contributors … and many others Continous updating, integration of new sources and manual enhancement

3. 24 November 20113 Accessing the CERL Thesaurus Free at http://thesaurus.cerl.org/http://thesaurus.cerl.org/ Via SRU protocol for CERL members to integrate it into other systems Soon: as Linked Open Data in RDF for applications of the semantic web Editing client for manual editing

4. 24 November 20114 Contents of the CERL Thesaurus 787.000 records From –30 contributing institutions in –14 European countries hospitable to data of members and non-members of CERL

5. 24 November 20115 Contents of the CERL Thesaurus Includes and unites –standard forms of the contributing libraries –variant spellings –forms in Latin and other languages –fictitious names Developed and maintained by the Data Conversion Group at the Göttingen State and University Library Internal format following UNIMARC authorities Contributions can be accepted in various formats

6. 24 November 20116 CERL Thesaurus web interface

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13. 24 November 201113 Latest additions Place names from Hungary Provenance data from BNC Rome UL Wrocław authority file Dutch early printed material authority file BSBink provenance data Places of medieval manuscript writing in the Netherlands

14. 24 November 201114 Upcoming files National Library Warsaw authority file National Library of France authority file Scottish Book Trade Index Spread of Scottish printing place names National Library of Russia headings Early Hungarian Authors authority file

15. 24 November 201115 How to join in… Everyone: –Use the CERL Thesaurus as reference work –Add annotations to CERL Thesaurus records Librarians: –Contribute your local authority files –Provide access to provenance information in your local OPAC via the CERL Thesaurus –Use the CERL Thesaurus for Assisted Searching in your local databases Soon! Semantic web application: –Interpret knowledge captured in the CERL Thesaurus in entirely new contexts