1. SKOS : A language to describe simple knowledge structures for the web
W3C Semantic Web Working Group
Summarized by Gihyun Gong

2. About SKOS SKOS means ‘Simple knowledge organization System’
Developed by W3C’s Semantic Web Best Practices-WG
Started in 2004/02
First Working Draft Edition in 2005
First Public Working Draft Edition in 2008/01/25

3. Introduction What is SKOS? Applicable fields?
SKOS is a model for expressing knowledge organization systems in a machine-understandable way
Set of classes and properties to describe concept
Goal
To link RDF documents or merge with other RDF data
Applicable fields?
Thesaurus, Dictionaries, Classification Scheme
Ontology merging, Construct new domain ontology

4. Introduction

5. SKOS example 1 <rdf:RDF
xmlns:rdf="
xmlns:skos="
<skos:Concept rdf:about="
<skos:prefLabel>animals</skos:prefLabel>
<skos:altLabel>creatures</skos:altLabel>
<skos:altLabel>fauna</skos:altLabel>
</skos:Concept>
</rdf:RDF>

6. SKOS example 2 An extract from the UK Archival Thesaurus Term:
Economic cooperation
Used For:
Economic co-operation
Broader terms:
Economic policy
Narrower terms:
Economic integration
European economic cooperation
European industrial cooperation
Industrial cooperation
Related terms:
Interdependence
Scope Note:
Includes cooperative measures in banking, trade, industry etc., between and among countries.

7. SKOS example 2
RDF graph using the SKOS

8. SKOS Vocabularies skos:Concept skos:prefLabel skos:altLabel
skos:hiddenLabel
skos:altSymbol
skos:note (human-readable documentation)
skos:definition
skos:scopeNote
skos:example
skos:historyNote : give an instruction or useful information
skos:editorialNote : administrative documentation
skos:changeNote : change log of concept

9. SKOS Vocabularies : relationships
skos:semanticRelation
skos:broader
skos:narrower

10. SKOS Vocabularies : relationships
skos:related

11. SKOS Vocabularies : Collection
skos:Collection
skos:member

12. Use Case : FOAF

13. Use Case : SIOC+FOAF+SKOS

14. Use Case : Folksonomy Folksonomy
is classification by people (differ from Directory)
is a sort of user created Tag
Tags : Mirage, M480, Samsung,
Anycall, SmartPhone, Smart-Phone

15. Use Case : Gemet
Gemet
General multilingual environmental thesaurus

17. Use Case : SWED
SWED
Prototype of a new kind of directory of environmental organisations and projects

18. Links to the SKOS

19. Summary
SKOS is a simple framework for presenting and sharing terminology
Provides interoperability between different RDF documents
You can see more about SKOS in
Do we expect everything(RDF) to change to SKOS format?