Dutch culture link - version 2

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Dutch Culture LinkLukas KosterLibrary Systems CoordinatorLibrary of the University of [email protected] http://twitter.com/lukask

22 november, 2010 Dutch Culture Link - Lukas Koster

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Linked data?

1. Use URIs as names for things2. Use HTTP URIs so that people can look up those

names.3. When someone looks up a URI, provide useful

information, using the standards (RDF*, SPARQL)4. Include links to other URIs, so that they can discover

more things.

Tim Berners LeeDesign issueshttp://www.w3.org/DesignIssues/LinkedData.html


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Linked data!

Linked Data is a methodology for providing relationships between things (data, concepts

and documents) anywhere on the web, using URI’s for identifying, RDF for describing HTTP for publishing these things and relationships, in a way that they can be interpreted and used by

humans and software.

http://commonplace.net/2009/06/linked-data-for-libraries/


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Data is relationships

Triples subject-predicate-object a person (subject) is the

author of (predicate) a book (object)

a book (subject) is about (predicate) a person (object)


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Relationships?

Entity Relationship Diagram


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On the web

Relationships

Not internal, within same database silo

External, with all kinds of web sources

“Things” identified by URIs

Relationships too!


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Vocabularies (Ontologies)DatamodellenRDF – Resource Description Framework


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Content negotiation


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The Linked Open Data Project - partners

DEN – Digital Heritage Foundation of The Netherlands

Digital standards for heritage institutions

Promoting linked open data: museums, etc.

Simple guidelines UBA – Library of the University of

Amsterdam TIN – Theater Institute of The

Netherlands


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The Linked Open Data Project - Objectives

Set an example Proof of concept Pilot Convince heritage institutions Convince TIN, UBA management

Dutch Culture Link


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The Linked Open Data Project – 2 viewpoints

Publish

Use


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The TIN Collection

Theater performances Metadata Digital objects

Audio

Video

Images

Photos


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The UBA OPAC

Metadata Bibliographic MARC


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The TIN Collection Data model


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FRBR?

Work Expression Manifestation Item

Play Production Production Performance

(translation?)

Play Translation Edition Copy


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Questions….

Which vocabulary/ontology? How to implement RDF? How to format URIs? Which tools, techniques, languages? How to find/get published linked data? How to process retrieved linked data?


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Training

Lots of sites, tutorials on line Training: no money DANS Linked Open Data workshop


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Quick and dirty

TIN

URIs for data entities

JSON UBA

JavaScript: construct TIN URI

Process JSON

Present data in record

AGILE!


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TIN

URI <base-url>/person/<personname>

<base-url>/play/<personname>/<title>

<base-url>/production/<personname>/<title>/<opening>

<base-url>/performance/<personname>/<title>/<opening>/<datetime>

…

Ad Aerts


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TIN – URI + JSON Example

<base-url>/person/Beckett, Samuel

jsonTIN({"key":"beckett, samuel","name":"Beckett, Samuel","birth.country":"Ierland","birth.date":" 1906*","birth.place":"Foxrock","death.date":"1989-12-22","death.place":"Parijs"})


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UBA OPAC

<base-url>/person/Beckett, Samuel


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UBA – JavaScript: create URIRoxana Popistaşu


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UBA – JavaScript: process JSON


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UBA OPAC results


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Is this linked data?

Not yet……


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Next steps - TIN

Vocabulary for Production/Performance subject area Vocabularies for Persons (FOAF?), Subjects (SKOS?) RDF in JSON (internal relationships) Publish RDF/XML More URIs External links Content negotiation Add digital objects


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Next steps - UBA

More “search” fields (Title) Extend presentation

Include relations

Clickable


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TIN – Extra URIs: person + plays(productions?)


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TIN – Extra URIs: productions


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TIN – Extra URIs: specific production


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Finally

Reverse stuff Publish UBA

bibliographic metadata

as linked data

Get UBA linked data

into TIN results


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Issues

Use generic, really unique URIs Person: id’s (VIAF?)

Plays: id’s?

Central mapping authority UBA OPAC person (OCLC PPN) = TIN person

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Dutch culture link - version 2

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