This document discusses converting library data to linked data. It describes how library data such as MARC records are currently not very readable and do not follow linked data principles. The author details converting library data to RDF and linking it to external datasets using ontologies like Dublin Core and SKOS. This creates readable, sharable, linkable and distributable library data that is more integrated and queryable. A prototype of the National Technical Library's linked data uses a lightweight API and open licenses to provide open bibliographic data in a format that can exist alongside original data distribution methods.

1. Linked Data as a Library
Data Platform
A Proof of Concept from National Technical Library
of Czech Republic
Jindřich Mynarz
National Technical Library ELAG 2010 Helsinki
June 10th 2010

2. Overview
 Library data
 Linked data
 Converting library data to linked data
 Distribution
 Benefits of linked library data

3. Library data are not very readable

4. Source: National Library of the Czech Republic card catalogue
Catalog card - record

5. MARC Record
CAPTCHA - Completely Automated Public Turing test to tell
Cataloguers and Humans Apart

6. Library data in XML are still
not very readable

8. Library-specific access protocols
(Z39.50, OAI-PMH)

9. http://www.flickr.com/photos/lwr/144004119/

10. ttp://www.flickr.com/photos/dullhunk/303503677
Linked data

11. Linked data principles
Thou shalt:
 Use URIs as names for things.
 Use HTTP URIs so that people can look up
those names.
 When someone looks up a URI, provide
useful information, using the standards (RDF,
SPARQL).
 Include links to other URIs. so that they can
discover more things.

12. http://www.flickr.com/photos/dullhunk/3525013547

13. Data conversion
 Choosing datasets
 Choosing description
 Extraction
 Linking
 Distribution

15. Choosing description
 Domain ontologies
 Established, popular (Dublin Core, SKOS)
Falcons concept search

16. http://blissfullydomestic.com/2010/spring-clean-your-blog-comments
Extraction - matching dirty data

17. Linking
Library data already contain links

18. Links to resources identified
by code values

19. Links to classification notations

20. Links to persons

21. Links to geographical entities
and institutions

22. „Outsourcing“ authorities
 DBPedia
 VIAF
 Geonames

24. http://thesecretmirror.com/linked-data/why-you-should-support-linked-data
Crawling data

25. Distribution
 Lightweight API
 Single interface to the datasets

26. http://www.flickr.com/photos/virtualsugar/316200555
Open bibliographic data

27. Open licences

28. National Technical Library's
library linked data prototype
http://www.panoramio.com/photo/20268409
 Incomplete
 Parallel coexistence with the original way of
data distribution

29. Benefits of linked library data
 Readable
 Sharable
 Linkable
 Distributable
 Integrable
 ?-able

30. Changes

31. Questions!

32. http://www.flickr.com/photos/theredproject/3302110152
Jindřich Mynarz
www.techlib.cz/en
jindrich.mynarz@techlib.cz
@jindrichmynarz