load–linked open antipodal data
DESCRIPTION
A presentation about the linked data activities in the German National Library accompanying my lunch talk in the National Library of New Zealand on August 13, 2013.TRANSCRIPT
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| 31 | Linked Open Antipodal Data | August 13, 20131
LOAD – Linked Open Antipodal DataA brief overview of the Linked Data activities in the
German National Library
Lars G. Svensson
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When someone searches for information, the first place they visit usually isn‘t the library
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The data librarians create could help making search better
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There it is!
WOW!
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Outside of libraries, our data formats are not readily understood
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MARC 21
MAB 2
Z39.50ISBD
UNIMARC
FRBR
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Ideally, it should be easy for other service providers to re-use library data
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Library data
Otherdata
Somedata
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Linked Library Data could be a good way to start
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The German National Library has much data
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Books SerialsArchival records
Sound carriers
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The data is a by-product of our collection mandate
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[…] entrusted with the task of collecting, permanently archiving, bibliographically classifying and making available to the general public all German and German-language publications from 1913, foreign publications about Germany, translations of German works, and the works of German-speaking emigrants published abroad between 1933 and 1945.[…]
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The immediate output of the daily work is title data
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The title data is supported by authority data from the GND
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GND
PND SWD GKD EST
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Increasingly, we make digital full texts available
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We began with Linked Data in 2010 in order to reach out to non-library communities
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Let‘s see: Who is out
there?
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The authority data seems to be the most interesting dataset
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Use cases for title data is still work-in-progress
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1806 fiel Frankfurt unter die Herrschaft des Fürstprimas Karl Theodor von Dalberg, der es mit seinen Fürstentümern Regensburg und Aschaffenburg zu einem selbständigen Staat innerhalb des Rheinbunds vereinigte.
http://d-nb.info/gnd/2033949-5
http://d-nb.info/gnd/2031951-4
http://d-nb.info/gnd/118720961
http://d-nb.info/gnd/2005153-0
http://d-nb.info/gnd/2028282-5Frankfurt am Main oder Frankfurt/Oder?
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A third field are ontologies structuring the data
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gndo:Differentiated
Person
gnd:118584596
Wolfgang Amadeus Mozart
Franz Xaver Wolfgang
Mozart
agrelon:hasChild
gnd:119176653
rdf:type
http://d-nb.info/standards/elementset/gndhttp://d-nb.info/standards/elementset/agrelon
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In order to encourage re-use, (almost) all metadata is available under CC0
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RDFCSV
MARC>2 years<2 years
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We aim to link our data to as many other datasets as possible
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DNB
LCSH
DeweyYou!
Agrovoc
Wiki-pedia
RAMEAU
VIAF
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Much link-creation is still done manually
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#FORMAT: BEACON#PREFIX: http://d-nb.info/gnd/ #TARGET: http://cgi-host.uni-marburg.de/~omgesa/gs/xs1.php?f1=pnd&s1={ID}#FEED: http://www.online.uni-marburg.de/fpmr/pnd.txt #CONTACT: Jörg Witzel [email protected]#INSTITUTION: Forschungsstelle für Personalschriften#NAME: Gesamtkatalog deutschsprachiger Leichenpredigten (GESA)#MESSAGE: Leichenpredigten 1550-1800 (GESA) #TIMESTAMP: 2012-08-09100000193|3100006353|9100009271|3100017061|9100017495|1100018335|8100019552|5100021549|3100029752|199100030378|7100031307|3100031358|22100031900|27100033709|2100033970|7100036422|1100039596|4100043542|1100044921|1100046770|6
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We develop the platform Culturegraph to create links algorithmically
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<owl:AnnotationProperty rdf:about="http://d-nb.info/standards/elementset/gnd#marc21equivalent"><rdfs:label xml:lang="de">MARC 21 Entsprechung</rdfs:label><rdfs:label xml:lang="en">MARC 21 equivalent</rdfs:label><rdfs:comment xml:lang="de">Gibt die MARC 21 Entsprechung des Elements im GND-MARC-Format wieder.</rdfs:comment> <rdfs:comment xml:lang="en">Expresses the MARC 21 equivalent for this element in the GND MARC format.</rdfs:comment></owl:AnnotationProperty>
@prefix void: <http://rdfs.org/ns/void#> .@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .@prefix owl: <http://www.w3.org/2002/07/owl#> .@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .@prefix dcterms: <http://purl.org/dc/terms/> .@prefix foaf: <http://xmlns.com/foaf/0.1/> .
<mx:datafield tag="153" ind2=" " ind1=" "><mx:subfield code="a">220.531</mx:subfield><mx:subfield code="y">1</mx:subfield><mx:subfield code="a">7</mx:subfield><mx:subfield code="e">220.531</mx:subfield><mx:subfield code="j">Paraphrasen</mx:subfield><mx:subfield code="9">ess=ren</mx:subfield></mx:datafield></mx:record>
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120 Million records connected through five algorithms
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CulturegraphAuthorities shall be a gateway service to entities in the GND
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?culturegraph.org
!
GND
Hidden relations
Missing links
Duplicates Missing back-links
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Many other European libraries and CH portals are active with Linked Data, too
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The Swedish National Library deserves a honourable mention
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The BnF uses Linked Data to build services for smaller libraries
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The BnF uses Linked Data to build services for smaller libraries
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BL and DNB together prototype a network of interlinked national bibliographies
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So does Linked Data really help to navigate the Semantic Web?
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People outside of libraries can benefit from our data but find it hard to understand the data formats
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Linked Library Data could be a good compromise
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By creating more links between libraries, we can create a critical mass of data and head towards the bibliographical future
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The Giant Global Graph: Where Kallimachos meets Tim Berners-Lee
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Literature about DNB Linked Data Service:
The Deutsche Nationalbibliografie as linked open data : applications and opportunities ; World Library and Information Congress: 78th General Conference and Assembly, IFLA 2012, Helsinki / Jürgen Kett ; Sarah Beyer ; Mathias Manecke ; Yvonne Jahns ; Lars G. Svensson. urn:nbn:de:101-2012052306
Licensing Library and Authority Data Under CC0: The DNB Experience / Lars Svensson. http://www.w3.org/2013/04/odw/odw13_submission_57.pdf
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