Content Management with RDF Leigh Dodds, Chief Technology Officer, Ingenta [email_address] 25 th April 2007

Leigh Dodds, Chief Technology Officer, Ingenta

[email_address]

25 th April 2007

Why? How?

A Digression: The RDF Model

<http://www.example.org/article/1>

Alan Turing worked at Bletchley Park

</person/turing> workedAt </place/bletchley>

</person/turing> hasName “Alan Turing” </person/turing> workedAt </place/bletchley> </place/bletchey> hasName “Bletchley Park”

Why Use RDF? Encourages modelling of resources Simple extensibility Ease of Storage Data Merging Networked data Re-wiring publications

Encourages modelling of resources

Simple extensibility

Ease of Storage

Data Merging

Networked data

Re-wiring publications

Where Would You Use RDF?

..and Where Wouldn’t You Use RDF? It’s Not For Content!

It’s Not For Content!

How?

Assigning Identifiers

http://metastore.ingenta.com/article/456

Vocabularies

Dublin Core Basic set of generic properties Title Creator Publisher Created, Updated, Modified Format Identifier Subject ..etc

Basic set of generic properties

Title

Creator

Publisher

Created, Updated, Modified

Format

Identifier

Subject

..etc

PRISM Publishing Requirements for Industry Standard Metadata Builds on XML, RDF, Dublin Core DOI, eISSN startingPage, endingPage isPartOf, hasParts related references hasTranslation, hasCorrection

Publishing Requirements for Industry Standard Metadata

Builds on XML, RDF, Dublin Core

DOI, eISSN

startingPage, endingPage

isPartOf, hasParts

related

references

hasTranslation,

hasCorrection

FOAF “ Friend of a Friend” Community driven specification Some useful stable terms for describing people and organizations Person Organization Document homepage, weblog topic, primaryTopic

“ Friend of a Friend”

Community driven specification

Some useful stable terms for describing people and organizations

Person

Organization

Document

homepage, weblog

topic, primaryTopic

SKOS Simple Knowledge Organization System Thesauri, subject classifications Drive navigation and indexing Terms broaderTerm, narrowerTerm relatedTerms preferred label, alternate label

Simple Knowledge Organization System

Thesauri, subject classifications

Drive navigation and indexing

Terms

broaderTerm, narrowerTerm

relatedTerms

preferred label, alternate label

Generating RDF XML to RDF XSLT XQuery Database to RDF D2R XHTML to RDF GRDDL

XML to RDF

XSLT

XQuery

Database to RDF

D2R

XHTML to RDF

GRDDL

Manipulating RDF

SPARQL W3C Query Language for RDF SELECT ?resource, ?name WHERE { ?resource hasName ?name } “ Bletchley Park” </place/bletchely> “ Alan Turing” </person/turing> ?name ?resource

W3C Query Language for RDF

SELECT ?resource, ?name

WHERE {

?resource hasName ?name

}

Problem Areas

Duck Typing for Data

Questions?

Picture Attributions “ The Confusion of Tongues”, Gustav Doré http://en. wikipedia .org/ wiki /Image:Confusion_of_Tongues. png “ So many ducks…Ducking Hell”, Gaetan Lee http://flickr.com/photos/gaetanlee/298160427/

“ The Confusion of Tongues”, Gustav Doré

http://en. wikipedia .org/ wiki /Image:Confusion_of_Tongues. png

“ So many ducks…Ducking Hell”, Gaetan Lee

http://flickr.com/photos/gaetanlee/298160427/