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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LOAD – Linked Open Antipodal DataA brief overview of the Linked Data activities in the
German National Library
Lars G. Svensson
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!
Ph
oto
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dt
Com
mon
s (C
C B
Y):
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.com
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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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Photo
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Library data
Otherdata
Somedata
Linked Library Data could be a good way to start
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Lin
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Data
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.net/
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.[…]
The immediate output of the daily work is title data
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Ph
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CC
BY-
SA
): h
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The title data is supported by authority data from the GND
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GND
PND SWD GKD EST
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?
Ph
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by Ian
T.
Ed
ward
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The authority data seems to be the most interesting dataset
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htt
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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?
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
In order to encourage re-use, (almost) all metadata is available under CC0
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RDFCSV
MARC>2 years<2 years
FEEPh
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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
Much link-creation is still done manually
18
#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
Ph
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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
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
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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htt
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/im
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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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htt
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Linked Library Data could be a good compromise
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Lin
kin
g O
pen
Data
clo
ud
dia
gra
m,
by R
ich
ard
Cyg
an
iak
an
d A
nja
Jen
tzsc
h.
htt
p:/
/lod
-clo
ud
.net/
By creating more links between libraries, we can create a critical mass of data and head towards the bibliographical future
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htt
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The Giant Global Graph: Where Kallimachos meets Tim Berners-Lee
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htt
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Ph
oto
by M
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Harr
sch
(C
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A)
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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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