1. An
Introduction
to
Linked Data
Part 5 of 5 David Hyland-Wood
RDF Vocabularies University of Mary Washington
Wednesday, May 25, 2011

2. A Tour of RDF
Vocabularies
Wednesday, May 25, 2011

3. Some Commonly Used RDF Vocabularies
• Friend of a Friend (FOAF)
Project: http://www.foaf-project.org/
Namespace: http://xmlns.com/foaf/0.1/
• Description of a Project (DOAP)
Project: http://trac.usefulinc.com/doap
Namespace: http://usefulinc.com/ns/doap#
• Dublin Core (DC)
Project: http://dublincore.org/documents/dcq-rdf-xml/
Namespace: http://purl.org/dc/elements/1.1/
Wednesday, May 25, 2011

4. Some Commonly Used RDF Vocabularies
• Semantically-Interlinked Online
Communities (SIOC)
Project: http://sioc-project.org/
Namespace: http://rdfs.org/sioc/ns#
• Vocabulary of Interlinked Datasets (VoiD)
Project: http://semanticweb.org/wiki/VoiD, http://vocab.deri.ie/void
Namespace: http://rdfs.org/ns/void#
• vCard
Project: http://www.w3.org/TR/vcard-rdf/
Namespace: http://www.w3.org/2006/vcard/ns#
Wednesday, May 25, 2011

5. Some Commonly Used RDF Vocabularies
• Web Ontology Language (OWL)
Project: http://www.w3.org/TR/owl2-overview/
Namespace: http://www.w3.org/ns/owl2-xml
• Simple Knowledge Organisation System
(SKOS)
Project: http://www.w3.org/2004/02/skos/
Namespace: http://www.w3.org/2004/02/skos/core#
Wednesday, May 25, 2011

6. Some Commonly Used RDF Vocabularies
• RDF Schema (RDFS)
Project: http://www.w3.org/TR/rdf-schema/
Namespace: http://www.w3.org/2000/01/rdf-schema#
NB: RDFʼs namespace is:
http://www.w3.org/1999/02/22-rdf-syntax-ns#
• XML Schema Datatypes
Project: http://www.w3.org/TR/xmlschema-2/
Namespace: http://www.w3.org/2001/XMLSchema#
Wednesday, May 25, 2011

7. FOAF Core
• Agent • age
• Person • made (maker)
• name • primaryTopic
• title (primaryTopicOf)
• img • Project
• depiction (depicts) • Organization
• familyName • Group
• givenName • member
• knows • Document
• based_near • Image
Wednesday, May 25, 2011

8. FOAF Core
• Agent • based_near
• Person • age
• name • made (maker)
• title • primaryTopic
• img (primaryTopicOf)
• depiction •
•
Project
Organization
(depicts)
• Group
• familyName
• member
• givenName
• Document
• knows • Image
Wednesday, May 25, 2011

9. FOAF Social Web
• nick • publications
• mbox • currentProject
• homepage • pastProject
• weblog • account
• openid • OnlineAccount
• jabberID • accountName
• mbox_sha1sum • accountServiceHomepage
• interest • PersonalProfileDocument
• topic_interest • tipjar
• topic (page) • sha1
• workplaceHomepage • thumbnail
• workInfoHomepage • logo
• schoolHomepage
Wednesday, May 25, 2011

10. DOAP Classes
• CVS Repository
• Git Repository
• BitKeeper Repository
• Subversion Repository
• GNU Arch repository
• darcs Repository
• Version
• Specification
• Mercurial Repository
• Repository
• Project
• Bazaar Branch
Wednesday, May 25, 2011

11. DOAP Properties
• Implements specification • translator
• anonymous root • module
• platform, browse • documenter
• mailing list • wiki
• programming language • repository
• category • name
• homepage • repository location
• description • language
• helper • service endpoint
• tester • created
• short description • developer
• audience • vendor
• screenshots • download mirror
Wednesday, May 25, 2011

12. DOAP Properties
• old homepage
• revision
• download page
• license
• bug database
• maintainer
• blog
• file-release
• operating system
• release
Wednesday, May 25, 2011

13. DOAP
• name
• homepage
• developer
• programming-
language
• os
• license
Wednesday, May 25, 2011

14. Dublin Core Classes
• Agent • MediaTypeOrExtent
• AgentClass • MethodOfAccrual
• BibliographicResource • MethodOfInstruction
• FileFormat • PeriodOfTime
• Frequency • PhysicalMedium
• Jurisdiction • PhysicalResource
• LicenseDocument • Policy
• LinguisticSystem • ProvenanceStatement
• Location • RightsStatement
• LocationPeriodOrJurisdicti • SizeOrDuration
on • Standard
• MediaType
Wednesday, May 25, 2011

15. Dublin Core Properties
• abstract • creator
• accessRights • date
• accrualMethod • dateAccepted
• accrualPeriodicity • dateCopyrighted
• accrualPolicy • dateSubmitted
• alternative • description
• audience • educationLevel, extent,
• available format, hasFormat
• bibliographicCitation • hasPart
• conformsTo • hasVersion
• contributor • identifier
• coverage • instructionalMethod
• created • isFormatOf
Wednesday, May 25, 2011

16. Dublin Core Properties
• isPartOf • publisher
• isReferencedBy • references
• isReplacedBy • relation
• isRequiredBy • replaces
• issued • requires
• isVersionOf • rights
• language • rightsHolder
• license • source
• mediator • spatial
• medium • subject
• modified • tableOfContents
• provenance • temporal
Wednesday, May 25, 2011

17. Dublin Core Properties
• title
• type
• valid
Wednesday, May 25, 2011

18. Dublin Core
• abstract
• creator
• date
• description
• publisher
• title
Wednesday, May 25, 2011

19. Guidance
• To name things:
• rdfs:label
• foaf:name
• skos:prefLabel
• To describe people:
• FOAF, vCard
• To describe projects:
• DOAP
Wednesday, May 25, 2011

20. Guidance
• To describe Web pages and other
publications:
• dc:creator, dc:description, etc.
• To describe an RDF schema/vocabulary/
ontology:
• VoiD
• To describe addresses:
• vCard
Wednesday, May 25, 2011

21. Guidance
• To model simple data:
• RDF, RDFS, vocabularies
• To model existing taxonomies:
• SKOS
• To model complex data and/or allow for
logical inference:
• OWL
Wednesday, May 25, 2011

22. This work is Copyright © 2010 David Hyland-Wood
It is licensed under the Creative Commons Attribution 3.0 Unported License.
Full details at: http://creativecommons.org/licenses/by/3.0/
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Wednesday, May 25, 2011