2009 SKOSprimer

Subject Headings: SKOS Standard.

Notes

SKOS — Simple Knowledge Organization System — provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, folksonomies, and other similar types of controlled vocabulary. As an application of the Resource Description Framework (RDF), SKOS allows concepts to be composed and published on the World Wide Web, linked with data on the Web and integrated into other concept schemes.
This document is a user guide for those who would like to represent their concept scheme using SKOS.
In basic SKOS, conceptual resources (concepts) are identified with URIs, labeled with strings in one or more natural languages, documented with various types of note, semantically related to each other in informal hierarchies and association networks, and aggregated into concept schemes.
In advanced SKOS, conceptual resources can be mapped across concept schemes and grouped into labeled or ordered collections. Relationships can be specified between concept labels. Finally, the SKOS vocabulary itself can be extended to suit the needs of particular communities of practice or combined with other modeling vocabularies.
This document is a companion to the SKOS Reference, which provides the normative reference on SKOS.

The fundamental element of the SKOS vocabulary is the concept. Concepts are the units of thought [WillpowerGlossary] — ideas, meanings, or (categories of) objects and events — which underlie many knowledge organization systems [SKOS-UCR]. As such, concepts exist in the mind as abstract entities which are independent of the terms used to label them.
SKOS introduces the class skos:Concept, which allows implementors to assert that a given resource is a concept.

http://www.w3.org/TR/skos-primer/#seclabel
The first characterizations of concepts are the expressions that are used to refer to them in natural language: their labels. SKOS provides three properties to attach labels to conceptual resources: skos:prefLabel, skos:altLabel and skos:hiddenLabel. Each property implies a specific status for the label it introduces, ranging from a strong, univocal denotation relationship, to a string to aid in lookup. These properties are formally defined as being pairwise disjoint. This means, for example, that it is an error if a concept has a same literal both as its preferred label and as an alternative label.

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	Author	volume	Date Value	title	type	journal	titleUrl	doi	note	year
2009 SKOSprimer	Antoine Isaac Ed Summers			SKOS Simple Knowledge Organization System Primer			http://www.w3.org/TR/skos-primer/			2009