Linked Open Library Bielefeld Conference, Dr. Silke Schomburg

Agenda 1.Basics 2.Why LOD? 3.hbz LOD activities a)lobid.org b)culturegraph 4.Perspectives 2

Basics 3

Linked Data Principles 4

Picture of LOD cloud 5

A sustainable strategy of publishing and linking data on the web requires the data to be open. 6

7 &

Why LOD? 8

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  Things you can‘t say about traditional library data… 9

Expected ROI  Synergy effects through standardization of technology stack:  Quantitative: saved resources  Qualitative: improved services 10

hbz LOD activities 11

12 Since 2009Annual SWIB conference (together with ZBW)SWIB 03/2010First open data publicationopen data publication Since 06/2010 Coordinating the OKFN WG on Open Bibliographic DataWG on Open Bibliographic Data 07/2010lobid.orglobid.org launched 11/2010culturegraph.orgculturegraph.org starts 01/2011PrinciplesPrinciples on openbiblio data 11/2011Legal open data guide Legal open data guide published, DINI-KIM recommendations for opening up library datarecommendations

lobid.org 13

Technology stack  Data: exports from legacy systems & LOD dumps  Triple Store: 4store4store  Search engine: elasticsearchelasticsearch  RDF browser: PhresnelPhresnel  Read news on our hbz LOD bloghbz LOD blog 14

lobid-organisations  RDF descriptions for more than 40k international organisations  Data sources: German ISIL registry & MARC Organization Code database  Not (yet) openly licensed 15

16 Source:

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 informationthe Data Hub 17

18 Source:

culturegraph 19

Open platform for interconnecting datasets  Persistent Identification of entities  Computation of similarities and links  Administration and publication of mappings  Open Data / Free SoftwareFree Software 20

culturegraph as signpost in the LOD cloud 21 Hidden duplicates Different services Different interfaces ? Culturegraph !

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 DemonstratorDemonstrator 22

Perspectives 23

Bulding a service-oriented library infrastructure  Centered around culturegraph  Funded by DFG (?)  Cooperative development by several German library service centers and DNB 24

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Characteristics  Based on free flow of open data  Real-time communication  Web Services:  Deduplication Service  Identifier Service  Holdings & Availability Service  …  Generic API 26

SWIB 2012  ”Semantic Web in Libraries" (SWIB) hosted by hbz and ZBW – Leibniz Information Centre for Economics  Cologne,  27

Thanks. Questions? With pleasure now/here or also later to 28

License 29 These slides are published under a Creative Commons license: