Linked Open Library Data @hbz

Bielefeld Conference, 26.04.2012

Dr. Silke Schomburg

Agenda

1.Basics2.Why LOD?3.hbz LOD activities

a) lobid.orgb) culturegraph

4.Perspectives

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Basics

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<skip>Linked Data Principles

</skip>

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<skip>Picture of LOD cloud

</skip>

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A sustainable strategy of publishing and linking data on the web requires the data to be open.

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7http://www.w3.org/DesignIssues/LinkedData.html &http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/

Why LOD?

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Motivation Use of international and cross-

domain web standards leads toIncreased discoverabilityMultiple usability of one datasetMaximized interoperability & re-

usabilityFlexible data model

Things you can‘t say about traditional library data…

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Expected ROI

Synergy effects through standardization of technology stack:Quantitative: saved resourcesQualitative: improved services

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hbz LOD activities

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Since 2009 Annual SWIB conference (together with ZBW)

03/2010 First open data publication

Since 06/2010

Coordinating the OKFN WG on Open Bibliographic Data

07/2010 lobid.org launched

11/2010 culturegraph.org starts

01/2011 Principles on openbiblio data

11/2011 Legal open data guide published,

DINI-KIM recommendations for opening up library data

lobid.org

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Technology stack

Data: exports from legacy systems & LOD dumps

Triple Store: 4store Search engine: elasticsearch RDF browser: Phresnel Read news on our hbz LOD blog

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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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16Source: http://lobid.org/organisation/DE-361/about

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 information17

18Source: http://lobid.org/resource/HT002948556/about

culturegraph

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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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culturegraph as signpost in the LOD cloud

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Hiddenduplicates

Different services

Differentinterfaces

?Culturegraph !

First Project: Resolving & Lookup

Input: 6 German union catalogsObjective: Bundling of

manifestationsService:

Publication of bundlesMinting URNs for approved bundlesSearch bundles using established

identifiers Take a look at the Demonstrator

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Perspectives

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Bulding a service-oriented library infrastructure

Centered around culturegraph Funded by DFG (?) Cooperative development by several

German library service centers and DNB

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CharacteristicsBased on free flow of open dataReal-time communicationWeb Services:

Deduplication ServiceIdentifier ServiceHoldings & Availability Service…

Generic API

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SWIB 2012

”Semantic Web in Libraries" (SWIB) hosted by hbz and ZBW – Leibniz Information Centre for EconomicsCologne, 27. - 29.11.2012http://swib.org/

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Thanks.

Questions?

With pleasure now/here or also later to semweb@hbz-nrw.de

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License

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These slides are published under a Creative Commons license:

http://creativecommons.org/licenses/by/3.0/de/