This document summarizes a presentation on Linked Open Data given by Silke Schomburg and Adrian Pohl at the Bielefeld Conference on April 26, 2012. It discusses the basics of Linked Open Data (LOD), the motivations for adopting LOD practices, and the LOD activities of the hbz library network, including lobid.org for publishing open bibliographic data as LOD and culturegraph.org for interconnecting datasets. It also explores future opportunities for web-based cataloging and building a more integrated library infrastructure based on open data and web services.
9. Motivation
Use of international and cross-
domain web standards leads to
Increased discoverability
Multiple usability of one dataset
Maximized interoperability & re-
usability
Flexible data model
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10. Expected ROI
Synergy effects through
standardization of technology
stack:
Quantitative: saved resources
Qualitative: improved services
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12. Since 2009 Annual SWIB conference (with ZBW)
03/2010 First open data publication
Since Coordinating the OKFN WG on Open
06/2010 Bibliographic Data
07/2010 lobid.org launched
11/2010 culturegraph.org starts
01/2011 Principles on openbiblio data
09/2011 Igelu Linked Open Data Special
Interest Working Group established
11/2011 Legal open data guide published
DINI-KIM recommendations for
opening up library data
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14. Technology stack
Triple Store/SPARQL endpoint:
4store
Search engine: elasticsearch
RDF browser: Phresnel
Data: exports from legacy
systems & LOD dumps
Read news on our hbz LOD blog
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15. lobid-organisations
RDF descriptions for more than
40k international organisations
Data sources: German ISIL
registry & MARC Organization
Code database
Not (yet) openly licensed
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17. lobid-resources
LOD interface for open data from
hbz union catalog
Licensed with CC0
Currently more than 10M records
Links to other datasets (GND,
ZDB, DBpedia, dewey.info, …)
See description on the Data Hub
for more information
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20. Open platform for
interconnecting datasets
Persistent identification of entities
Computation of similarities and
links
Administration and publication of
mappings
Open Data / Free Software
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21. culturegraph as signpost
in the LOD cloud
Culturegraph
Different services
?
!
Different
interfaces
Hidden
duplicates
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22. First Project: Resolving &
Lookup
Input: 6 German union catalogs
Objective: Bundling of
manifestations
Service:
Publication of bundles
Minting URNs for approved bundles
Search bundles using established
identifiers
Take a look at the Demonstrator
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24. Exploring opportunities for
future cataloging
Future web-based cataloging
platforms…
are based on Linked Data standards
push changes in real time
support versioning
re-use data from/link to the Giant
Global Graph
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25. Building a service-oriented
library infrastructure
Based on free flow of open data
Real-time communication
Web Services:
Deduplication Service
Identifier Service
Holdings & Availability Service
…
Easy-to-use API
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27. SWIB 2012
”Semantic Web in Libraries" (SWIB)
hosted by hbz and ZBW – Leibniz
Information Centre for Economics
Cologne, 27. - 29.11.2012
http://swib.org/
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28. Thanks.
Questions?
With pleasure now/here or also later to
semweb@hbz-nrw.de
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29. License
These slides are published under a Creative
Commons license:
http://creativecommons.org/licenses/by/3.0/de/
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