SKOS Core Vocabulary 2006-04-18 '2nd W3C Public Working Draft (Amended)' Edition
The 2006-04-18 '2nd W3C Public Working Draft (Amended)' edition of the SKOS Core Vocabulary, amended to fix an error in the namespace for the 'Resource' class.
SKOS Core Vocabulary
An RDF vocabulary for describing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, 'folksonomies', other types of controlled vocabulary, and also concept schemes embedded in glossaries and terminologies.
Members of the public-esw-thes@w3.org mailing list.
Gives labels, comments and definitions in German.
Gives labels, comments and definitions in French.
Gives labels, comments and definitions in Dutch.
Gives labels, comments and definitions in Portuguese.
Concept Scheme
A set of concepts, optionally including statements about semantic relationships between those concepts.
Thesauri, classification schemes, subject heading lists, taxonomies, 'folksonomies', and other types of controlled vocabulary are all examples of concept schemes. Concept schemes are also embedded in glossaries and terminologies.
A concept scheme may be defined to include concepts from different sources.
Comment changed to be clear about the fact that glossaries and terminologies are not types of controlled vocabulary.
The statement about this resource, involving the skos:subjectIndicator predicate, was removed.
Definition modified from 'A description of a set of concepts, which may include a description of relationships between those concepts'. Comment added 'Thesauri, classification schemes, subject heading lists, taxonomies, terminologies, glossaries and other types of controlled vocabulary are all examples of concept schemes'. Change to bring in line with SKOS Core Guide and definition at Willpower Glossary.
Reworked the definition, in line with new guide. Concept scheme now defined as 'a *description* of a set of concepts, which may include a description of relationships between those concepts'. This change made to make explicit the fact that semantic relationships between concepts may be part of a concept scheme. Also expresses modelling concept scheme as an information resource (hence the 'description' word added).
Added a definition; added an example; deprecated old comment; added new comment; added xml:lang value to label.
Concept
An abstract idea or notion; a unit of thought.
Removed the comment about inferring the meaning of a resource of type skos:Concept, because it was misleading (move to intentional model, where properties of a concept *explain* the meaning of the concept, but do not determine it. This allows for clearer modelling of concepts in multiple schemes).
has top concept
A top level concept in the concept scheme.
This property replaces the deprecated skos:TopConcept class.
in scheme
A concept scheme in which the concept is included.
A concept may be a member of more than one concept scheme.
Deprecated comment about rdfs:isDefinedBy because of mistaken understanding of relationship to that property.
This property no longer a sub-property of rdfs:isDefinedBy.
preferred label
The preferred lexical label for a resource, in a given language.
No two concepts in the same concept scheme may have the same value for skos:prefLabel in a given language.
alternative label
An alternative lexical label for a resource.
Acronyms, abbreviations, spelling variants, and irregular plural/singular forms may be included among the alternative labels for a concept. Mis-spelled terms are normally included as hidden labels (see skos:hiddenLabel).
Changed comment to reflect addition of skos:hiddenLabel, which commonly used for spelling variants.
hidden label
A lexical label for a resource that should be hidden when generating visual displays of the resource, but should still be accessible to free text search operations.
symbolic label
An image that is a symbolic label for the resource.
This property is roughly analagous to rdfs:label, but for labelling resources with images that have retrievable representations, rather than RDF literals.
preferred symbolic label
The preferred symbolic label for a resource.
No two concepts in the same concept scheme may have the same value for skos:prefSymbol.
This property now sub-prop of new skos:symbol. Range and domain removed (inherited from super-prop). Label changed from 'preferred symbol' to 'preferred symbolic label'.
alternative symbolic label
An alternative symbolic label for a resource.
This property now sub-prop of new skos:symbol. Range and domain removed (inherited from super-prop). Label changed from 'alternative symbol' to 'alternative symbolic label'.
semantic relation
A concept related by meaning.
This property should not be used directly, but as a super-property for all properties denoting a relationship of meaning between concepts.
has broader
A concept that is more general in meaning.
Broader concepts are typically rendered as parents in a concept hierarchy (tree).
Editorial: added missing inverse of to skos:narrower
has narrower
A concept that is more specific in meaning.
Narrower concepts are typically rendered as children in a concept hierarchy (tree).
related to
A concept with which there is an associative semantic relationship.
Added a definition; added an example; deprecated old comment; added xml:lang value to label.
Changed the definition to mention 'associative relationships', because previous definition too broad, and also to bring in line with BS8723 definition of 'associative relationships'.
note
A general note, for any purpose.
This property may be used directly, or as a super-property for more specific note types.
This property replaces the two deprecated properties skos:privateNote and skos:publicNote. To describe a note for a particular audience (e.g. 'editor', 'indexer', 'general user') use a note property with a related resource description and the dc:audience property.
definition
A statement or formal explanation of the meaning of a concept.
Super-property changed from skos:publicNote (deprecated) to skos:note.
Domain of skos:Concept removed. Super-property changed from rdfs:comment to skos:publicNote.
scope note
A note that helps to clarify the meaning of a concept.
example
An example of the use of a concept.
history note
A note about the past state/use/meaning of a concept.
editorial note
A note for an editor, translator or maintainer of the vocabulary.
Super-property changed from skos:privateNote (deprecated) to skos:note.
change note
A note about a modification to a concept.
Collection
A meaningful collection of concepts.
Labelled collections can be used with collectable semantic relation properties e.g. skos:narrower, where you would like a set of concepts to be displayed under a 'node label' in the hierarchy.
The word 'meaningful' added to the definition. Small change to the comment to make it clearer.
Ordered Collection
An ordered collection of concepts, where both the grouping and the ordering are meaningful.
Ordered collections can be used with collectable semantic relation properties, where you would like a set of concepts to be displayed in a specific order, and optionally under a 'node label'.
The text 'where both the grouping and the ordering are meaningful' added to the definition.
Collectable Property
A property which can be used with a skos:Collection.
The following rule applies for this property: [(?x ?p ?c) (?c skos:member ?y) (?p rdf:type skos:CollectableProperty) implies (?x ?p ?y)]
member
A member of a collection.
member list
An RDF list containing the members of an ordered collection.
The following rule applies for this property: [(?c skos:memberList ?l) elementOfList(?e,?l) implies (?c skos:member ?e)]
has subject
A concept that is a subject of the resource.
The following rule may be applied for this property: [(?d skos:subject ?x)(?x skos:broader ?y) implies (?d skos:subject ?y)]
The domain of this property changed to be unconstrained (was previously foaf:Document). The definition altered to reflect this (s/document/resource).
is subject of
A resource for which the concept is a subject.
The range of this property changed to be unconstrained (was previously foaf:Document). The definition altered to reflect this (s/document/resource).
has primary subject
A concept that is the primary subject of the resource.
A resource may have only one primary subject per concept scheme.
Editorial: s/document/resource in definition and comment
is primary subject of
A resource for which the concept is the primary subject.
Editorial: s/document/resource in definition
subject indicator
A subject indicator for a concept. [The notion of 'subject indicator' is defined here with reference to the latest definition endorsed by the OASIS Published Subjects Technical Committee.]
This property allows subject indicators to be used for concept identification in place of or in addition to directly assigned URIs.
Top Concept
A concept that sits at the top of the concept hierarchy.
This class is now deprecated. To indicate that a concept is a top concept in a scheme, now use the skos:hasTopConcept property.
instance of
An extension of the 'broader' property to specify the instantiation (instance of) relationship between two concepts. This property is semantically equivalent to the 'rdf:type' property.
This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
has instance
This property is the inverse of the 'broaderInstantive' property.
sub-class of
An extension of the 'broader' property to specify the class subsumption (sub-class/super-class) relationship between two concepts. This property is semantically equivalent to the 'rdfs:subClassOf' property.
super-class of
This property is the inverse of the 'broaderGeneric' property.
part of
An extension of the 'broader' property to specify a partitive (part of) relationship between two concepts.
has part
This property is the inverse of the 'broaderPartitive' property.
An extension of the 'related' property. Use this property to express a partitive relationship between concepts, where it is desired that such a relationship be treated as associative (i.e. linking separate branches of a hierarchy) and NOT hierarchical.
This property is the inverse of the 'relatedPartOf' property.
identifier
Use or extend this property to indicate any non-URI code that is used to uniquely identify a concept within a conceptual scheme.
This property is now deprecated. Use dc:identifier instead.
This property deprecated. (Use dc:identifier instead.)
public note
A general note intended for public consumption.
This property can be used directly for general notes, or as a super-property for more specific note types where the notes are intended for public consumption.
This property now replaced by skos:note. To describe a note for a particular audience (e.g. 'editor', 'indexer', 'general user') use a note property with a related resource description and the dc:audience property.
private note
A general note not intended for public consumption.
This property can be used directly for general notes, or as a super-property for more specific note types where the notes are NOT intended for public consumption.