the deutsche nationalbibliografie as linked open data
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| 27 | Deutsche Nationalbibliografie als Linked Open Data | August 16, 20121
The Deutsche Nationalbibliografie as linked open data: Applications and opportunitiesWLIC 2012 Session 215: What is a national bibliography today?
Jürgen Kett, Sarah Beyer, Mathias Manecke, Yvonne Jahns, and Lars G. Svensson
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The world is going digital and many organisations use this as an opportunity to optimise their data curation
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Everyone here knows that libraries have high-quality data of interest to many other organisations
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It is difficult for non-libraries to access and re-use library data
| 27 | Deutsche Nationalbibliografie als Linked Open Data | August 16, 20125
MARC?
Z39.50?
Library data should be an integral part of the WWW
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In the DNB, we decided to publish the national bibliography as linked open data
| 27 | Deutsche Nationalbibliografie als Linked Open Data | August 16, 20127
DDC(German)
DNB-Items
DNB-Titles
BLWikipedia
GND
LCSH
VIAF
ISBNISSNISMN
ZDB-Titel
Dewey.info
WorldCat-Titles
RAMEAU
urn:nbn:de
MVB
Phononet
Othersuppliers
Requirements of a national bibliography in the 21st century must measure themselves on data use and re-use in the WWW
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Users of a national bibliography build on four basic properties
– Data completeness and reliability– Data currentness– Referentiability– Persistence
| 27 | Deutsche Nationalbibliografie als Linked Open Data | August 16, 201210
The WWW increasingly mutates to an open space for data exchange which is (almost) impossible to control
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The consequences of this are manifold
We will never know if we have collected all relevant publications
There will be much machine-generated metadata (bad, but not useless)
Semantic interoperability will be more important than adherence to cataloguing rules
We will need to version metadata
We will need worldwide unique persistent identifiers for (electronic) publications and for authority records
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In Future, the national bibliography will be a graph in the WWW
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The boundaries of a national bibliography are hard to define
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The national bibliography will increasingly depend on data not curated by the national library
The road to WWW integration goes through linked open data
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The DNB publishes ~70% of its data as linked open data
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GND
Titles
ZDB
Music
Exilecollec-
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The national bibliography is seen as subset of the catalogue and is accessible over the same user interface
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A range of services are available to access that data
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Reference and archival service
Database: Data preparation and
data dumps
Reading room
Data APIs and self service
Current updates of National Bibliography and new release serviceAuthority Data Dumps and update serviceDump of complete Data in Linked Data RDFxmlSpecial selections
Search and Retrieve and Update (SRU)Open Archive Initiative (OAI)Linked Data-LinkingDatashop /RSS-Feed
Online Catalogue
Printed or PDF Version of National BibliographyPrinted Title CardsUniform Resource Name: URN Service
A coherent indexing policy with controlled access points make it easier to extract relevant data sets
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Library data tends to be hard to access and re-use while it really should be an integral part of the WWW
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In the DNB, we decided to solve this by publishing the national bibliography as linked open data
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DDC(German)
DNB-Items
DNB-Titles
BLWikipedia
GND
LCSH
VIAF
ISBNISSNISMN
ZDB-Titel
Dewey.info
WorldCat-Titles
RAMEAU
urn:nbn:de
MVB
Phononet
We do this because we firmly believe that this data is useful to others and we encourage anyone to use it
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Linked open bibliographies: Where Callimachos meets Tim Berners-Lee
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