SKOS : A language to describe simple knowledge structures for the web

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Presentation transcript:

SKOS : A language to describe simple knowledge structures for the web 2008. 11. 19 W3C Semantic Web Working Group Summarized by Gihyun Gong

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

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

Introduction

SKOS example 1 <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:skos="http://www.w3.org/2004/02/skos/core#"> <skos:Concept rdf:about="http://www.example.com/concepts#animals"> <skos:prefLabel>animals</skos:prefLabel> <skos:altLabel>creatures</skos:altLabel> <skos:altLabel>fauna</skos:altLabel> </skos:Concept> </rdf:RDF>

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.

SKOS example 2 RDF graph using the SKOS

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

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

SKOS Vocabularies : relationships skos:related

SKOS Vocabularies : Collection skos:Collection skos:member

Use Case : FOAF

Use Case : SIOC+FOAF+SKOS

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

Use Case : Gemet Gemet General multilingual environmental thesaurus

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

Links to the SKOS

Summary SKOS is a simple framework for presenting and sharing terminology Provides interoperability between different RDF documents You can see more about SKOS in http://www.w3.org/2004/02/skos Do we expect everything(RDF) to change to SKOS format?