Dutch culture link - version 2

Dutch Culture Link Lukas Koster Library Systems Coordinator Library of the University of Amsterdam l.koster@uva.nl http://twitter.com/lukask

Linked data?
Use URIs as names for things
Use HTTP URIs so that people can look up those names.
When someone looks up a URI, provide useful information, using the standards (RDF*, SPARQL)
Include links to other URIs, so that they can discover more things.
Tim Berners Lee Design issues http://www.w3.org/DesignIssues/LinkedData.html

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/

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 )

Relationships?
Entity Relationship Diagram

On the web
Relationships
Not internal, within same database silo
External, with all kinds of web sources
“ Things” identified by URIs
Relationships too!

Vocabularies (Ontologies) Datamodellen RDF – Resource Description Framework

Content negotiation

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

The Linked Open Data Project - Objectives
Set an example
Proof of concept
Pilot
Convince heritage institutions
Convince TIN, UBA management
Dutch Culture Link

The Linked Open Data Project – 2 viewpoints Publish Use

The TIN Collection
Theater performances
Metadata
Digital objects
Audio
Video
Images
Photos

The UBA OPAC
Metadata
Bibliographic
MARC

The TIN Collection Data model

FRBR?
Work
Expression
Manifestation
Item
Play
Production
Production
Performance
(translation?)
Play
Translation
Edition
Copy

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?

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

Quick and dirty
TIN
URIs for data entities
JSON
UBA
JavaScript: construct TIN URI
Process JSON
Present data in record
AGILE!

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

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" })

UBA OPAC < base-url >/person/Beckett, Samuel

UBA – JavaScript: create URI Roxana Popista şu

UBA – JavaScript: process JSON

UBA OPAC results

Is this linked data?
Not yet……

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

Next steps - UBA
More “search” fields (Title)
Extend presentation
Include relations
Clickable

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

TIN – Extra URIs: productions

TIN – Extra URIs: specific production

Finally
Reverse stuff
Publish UBA bibliographic metadata as linked data
Get UBA linked data into TIN results

Issues
Use generic, really unique URIs
Person: id’s (VIAF?)
Plays: id’s?
Central mapping authority
UBA OPAC person (OCLC PPN) = TIN person
Digital material
Copyright

Dutch culture link - version 2

by Lukas Koster on Nov 28, 2010

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