SKOS and Other W3C Vocabulary Related Activities .


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SKOS and Other W3C Vocabulary Related Activities. Gail Hodge Information International Assoc. NKOS Workshop Denver, CO June 10, 2005. Acknowledgements. Based on: Presentation by Alistair Miles of the Rutherford Laboratory at the OpenForum on Metadata Registries, April 2005.
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SKOS and Other W3C Vocabulary Related Activities Gail Hodge Information International Assoc. NKOS Workshop Denver, CO June 10, 2005

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Acknowledgments Based on: Presentation by Alistair Miles of the Rutherford Laboratory at the OpenForum on Metadata Registries, April 2005. Contribution from Joel Sachs, Univ. of Maryland Baltimore Co. furthermore, the SPIRE Project. Records from the SKOS Web website.

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What is the Semantic Web? Semantic Web terrific vision: "The Semantic Web is an augmentation of the present web in which data is given all around characterized importance, better empowering PCs and individuals to work in cooperation." … practically speaking: The Semantic Web gives a typical mechanical structure (i.e. URI, RDF, SPARQL, RDFS, OWL … ) that permits information to be shared and reused crosswise over application, undertaking, and group limits. Fruitful sharing and reuse requires a comprehension of importance.

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Relevant W3C Semantic Web Activities Best Practices and Deployment Working Group Chartered through January 31, 2006 Working drafts: SKOS center related archives (vocabulary determination; control; and so forth.) SKOS Mapping Vocabulary API for phrasing web administrations XML Schema Datatypes in RDF and OWL Defining N-ary connections on the semantic web: Use with people Web Service Description Working Group 2 Chartered through January, 2006 Working Drafts WSDL 2.0 SOAP 1.1 Binding

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Relevant Activities, contd. RDF Data Access Working Group Chartered (generally) till end of 2005 Working Drafts: SPARQL Query Language for RDF SPARQL Variable Binding Results XML Format SPARQL Protocol for RDF (written in WSDL 2.0) Web-Ontology Working Group (shut) Recommendations: The entire OWL group of records (dialect review; dialect direct; dialect reference; utilize cases; and so forth.)

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SKOS Core An extensible RDF dialect for depicting ideas and idea plans … an idea plan is an \'arrangement of ideas, alternatively including connections between ideas.\' … i.e. controlled vocabularies, thesauri, order plans, glossaries, subject heading frameworks, phrasings … e.g. AAT, DDC, AGROVOC …

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OWL versus SKOS Core OWL is the dialect of the Semantic Web. Why do you require SKOS on the off chance that you have OWL? SKOS Core … more adaptable, less requesting way to deal with displaying ideas … more qualified to sorts of KOS specified … requiring next to zero rebuilding to express in RDF … consequently minimal effort, while including esteem through basic advantages of RDF/semantic web approach.

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Basic SKOS Vocabulary Skos:Concept Class (this asset is an idea) Lexical Labeling Properties (relate idea with a name) Symbolic Labeling (relate idea with images) Semantic Relationship Properties (connections between ideas) Documentation Properties (definitions and change notes) Subject Indexing (interfacing a data asset to wording, dc:subject)

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Traditional Thesaurus to SKOS Mapping Concept gets a URI, not a name Lexical Labeling = names (not new ideas) Skos:prefLabel Skos:altLabel (Used For) Relationship Labeling between ideas Skos:broader Skos:narrower Skos:related Documentation, for example, Scope notes Skos:scopeNote Skos: definition

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RDF Graph Representation

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SKOS Status Development history Initiated by Semantic Web Advanced Development for Europe extend (SWAD-E) in 2003 Public improvement process and open engineer group Driven by W3C Semantic Web Best Practices and Deployment Working Group since 2004 SKOS Core status 1 st Public Working Draft May, 2005 RDF Vocabulary and Guidelines for KOS Conversion likewise accessible Comments asked for by end of June 2005 Standardization objective W3C Working Group Note W3C Recommendation track?

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Open Issues: Understanding the Limitations of SKOS Difference between SKOS Core and other RDF applications since demonstrating ideas includes another level of indirection Properties will be properties of the idea and not really of this present reality thing If two reasonable assets have similar importance they are not really similar asset Meaning from definitions versus semantic setting (connections, names, and so forth.) Concept conspire forming – utilization of Skos:inScheme property HTTP URIs for Concepts (this is an open question for the Technical Architecture Group)

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SKOS Resources SKOS Home Page http://www.w3.org/2004/02/skos/SKOS Core Guide SKOS Core Vocabulary Quick Guide to Publishing a Thesaurus on the Semantic Web SKOS Mailing List mailto:public-esw-thes@w3.org http://lists.w3.org/Archives/Public/open esw-thes/

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RDF/XML Using the UK Archival Thesaurus <rdf:RDF xmls:rdf=http://www.w3.org/1999/02/22-rdf-sentence structure ns# xmlns:rdfs=http://www.w3.org/2000/01/rdf-schema# xmlns:skos=http://www.w3.org/2004/02/skos/core#> <skos:Concept rdf:about="http://www.ukat.org.uk/thesaurus/idea/1750"> <skos:prefLabel> Economic participation </skos:prefLabel> <skos:altLabel> Economic co-operation </skos:altLabel> <skos:scopeNote>Includes agreeable measures in keeping money, exchange, industry, and so forth between and among countries.</skos:scopeNote> <skos:broader rdf:resource=http://www.ukat.org.uk/thesaurus/idea/ 3000"> [Economic policy] skos:narrower rdf:resource=http://www.ukat.org.uk/thesaurus/idea/ 3022"> [industrial collaboration ] <skos:narrower rdf:resource=http://www.ukat.org.uk/thesaurus/ concept/3500> [Economic integration] <skos:inScheme rdf: resource=http://www.ukat.org.uk/thesaurus/> </skos:Concept> </rdf:RDF>

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