Classes
CollectableProperty
Collection
Concept
ConceptScheme
OrderedCollection

Properties
altLabel
altSymbol
broader
changeNote
definition
editorialNote
example
hasTopConcept
hiddenLabel
historyNote
inScheme
isPrimarySubjectOf
isSubjectOf
member
memberList
narrower
prefLabel
prefSymbol
primarySubject
privateNote
publicNote
related
scopeNote
semanticRelation
subject
subjectIndicator

W3C

SKOS Core Vocabulary Specification

Editor's Draft 2005-02-09

This version:
http://www.w3.org/2004/02/skos/core/spec/2005-02-09
Latest version:
http://www.w3.org/2004/02/skos/core/spec/
Previous version:
http://www.w3.org/2004/02/skos/core/spec/2004-12-17
Editors:
Alistair Miles, CCLRC
Dan Brickley, W3C

Copyright ©2005 W3C ® (MIT, ERCIM , Keio), All Rights Reserved. W3C liability, trademark and document use rules apply.

Abstract

SKOS Core provides a model for expressing the basic structure and content of concept schemes (thesauri, classification schemes, subject heading lists, taxonomies, terminologies, glossaries and other types of controlled vocabulary).

The SKOS Core Vocabulary is an application of the Resource Description Framework (RDF), that can be used to express a concept scheme as an RDF graph. Using RDF allows data to be linked to and/or merged with other RDF data by semantic web applications.

This document gives an overview of the SKOS Core Vocabulary. It is generated by a program script from the RDF description of the SKOS Core Vocabulary. The latest version of this document can be relied upon to reflect the current state of the SKOS Core Vocabulary.

This document should be read in conjunction with the SKOS Core Guide.

Status of this Document

This section describes the status of this document at the time of its publication.

This document is an Editor's Draft for review by the Semantic Web Best Practices and Deployment Working Group (hereafter 'the Working Group') and the participants of the public-esw-thes@w3.org mailing list and is subject to change without notice. This document has no formal standing within W3C. Please consult the Working Group's home page and the W3C technical reports index for information about the latest publications by this group. This document may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

This document is published by the Semantic Web Best Practices and Deployment Working Group, part of the W3C Semantic Web Activity. The Working Group intends the SKOS Core Vocabulary Specification to become a W3C Working Group Note. However, other outcomes are possible within the framework of the W3C process and will be considered in response to deployment experience and feedback from the W3C membership. The Working Group has discussed the potential for SKOS Core to evolve into possible future W3C Recommendation Track work items, and would value feedback on the level of formal standardization that is appropriate.

We encourage public comments. Please send comments to public-esw-thes@w3.org [archive] and start the subject line of the message with "comment:".

Publication as a Working Draft does not imply endorsement by the W3C Membership.

Contents

Introduction

SKOS stands for Simple Knowledge Organisation System. The name SKOS was chosen to emphasise the goal of providing a simple yet powerful framework for expressing knowledge organisation systems in a machine-understandable way.

SKOS Core provides a model for expressing the basic structure and content of concept schemes (thesauri, classification schemes, subject heading lists, taxonomies, terminologies, glossaries and other types of controlled vocabulary).

The SKOS Core Vocabulary is an application of the Resource Description Framework (RDF). RDF provides a simple data formalism for talking about things, their properties, inter-relationships, and categories (classes). Using RDF allows data to be linked to and/or merged with other RDF data by semantic web applications. See RDF Concepts for an overview of RDF, RDF Semantics for its formal mathematical basis, and RDF Syntax for details of the RDF/XML document format used to exchange RDF data.

The SKOS Core Vocabulary is itself formally defined in RDF. The resource http://www.w3.org/2004/02/skos/core.rdf contains the definitive RDF description of the SKOS Core Vocabulary.

This document is intended to give a human-readable overview of the SKOS Core Vocabulary, and to be a reference companion to the SKOS Core Guide. It is generated by a program script from a template, using the RDF assertions contained in http://www.w3.org/2004/02/skos/core.rdf, and is regenerated whenever a change is made to these RDF assertions. It can therefore be relied upon to reflect the current state of the SKOS Core Vocabulary.

Guide to Term Summary Tables

Each term (i.e. class or property) of the SKOS Core vocabulary is summarised in this document as a table. Each table may have the following rows:

Class or Property:
URI: The Universal Resource Identifier.
Label: A human-readable label.
Definition: An explanation of the meaning of a class or property.
Comment: Additional information about meaning and/or proper use.
Example: An example of the use of a class or property.
Status: The status (stability level) of the class or property.
Issued: Date on which the class or property was issued.
Modified: Date on which the class or property was last modified.
Super-classes: (Classes only) any declared super-classes.
Super-properties: (Properties only) any declared super-properties.
Domain: (Properties only) the declared domain for the property.
Range: (Properties only) the declared range for the property.
Additional types: (Properties only) any declared additional types (e.g. owl:TransitiveProperty) for the property.
Inverse of: (Properties only) any declared inverse properties.
Replaces: Any deprecated terms which the given term has replaced in recommended usage.
Version info: A note about the modification and/or history of a class or property.
Replaced By: (Deprecated terms only) the term to use instead of the deprecated term.
Deprecated: (Deprecated terms only) the date of last modification (i.e. deprecation) of the term.

Policy Statements

Naming

The URI for a class or property in the SKOS Core Vocabulary is constructed by appending the local name for that property or class to the URI http://www.w3.org/2004/02/skos/core#. E.g.

http://www.w3.org/2004/02/skos/core#Concept
http://www.w3.org/2004/02/skos/core#prefSymbol

The local name of a class always starts with an uppercase character. Where the local name is comprised of multiple concatenated words, the leading character of each word will be an uppercase character. E.g.

Concept
ConceptScheme

The local name of a property starts with a lowercase character. Where the local name is comprised of multiple concatenated words, the leading character of the second and each subsequent word will be an uppercase character. E.g.

subject
prefLabel
isPrimarySubjectOf

Persistence

This document, the SKOS Core Guide, the RDF description of the SKOS Core Vocabulary, and the classes and properties of the SKOS Core Vocabulary are all declared to be persistent resources, as defined by the W3C URI Persistence Policy.

Change

Changes to SKOS Core classes and properties may occur. All changes are reported on the SKOS Change Log.

Each class or property is assigned a term status value, which indicates the stability of the resource, and the types of modification that are allowed. A class or property may take one of three term status values:

unstable
The term is unstable, and feedback is welcomed on it's current form and utility (analagous to 'alpha' release in software development). It may currently be poorly defined. It's meaning and/or form may be expected to change at any time. Do not implement mission critical systems that depend on this term persisting in its current form. (Changes corresponding to DCMI class A, B or C may occur).
testing
The term has gone beyond the raw proposal stage, and is undergoing testing (analagous to 'beta' release in software development). This term may still change in response to feedback from testing, although it may be expected not to undergo any radical change. The cost to early implementors of changing the term will be considered, however the goal of achieving wider interoperability and long-term stability may override those considerations. (Changes corresponding to DCMI class A or B may occur)
stable
No substantial (meaning changing) alterations will take place. Implementors can expect the term to persist in its current form indefinitely. (Changes corresponding to DCMI class A may occur)

New classes or properties may be added to the SKOS Core Vocabulary at any time (changes corresponding to DCMI class D).

A class or property at any of the above status levels may be marked as deprecated, in which case instructions will be given on what to use in its place. A deprecated class property may be expected to remain unchanged indefinitely.

Maintenance

Responsibility for maintaining the SKOS Core Vocabulary is assumed by the designated editors, who are at this time:

The editors pledge to seek the widest possible consensus before making any changes to the SKOS Core Vocabulary. The editors also pledge to ensure that all development work is carried out openly and in public, in consultation with the members of the public-esw-thes@w3.org mailing list. This mailing list is publicly archived, and any person may subscribe and/or post to it at any time.

Classes

Class:CollectableProperty
URI: http://www.w3.org/2004/02/skos/core#CollectableProperty
Label: Collectable Property
Definition: A property which can be used with a skos:Collection.
Comment: The following rule applies for this property: [(?x ?p ?c) (?c skos:member ?y) (?p rdf:type skos:CollectableProperty) implies (?x ?p ?y)]
Example:
Status: unstable
Issued: 2004-10-20
Class:Collection
URI: http://www.w3.org/2004/02/skos/core#Collection
Label: Collection
Definition: A meaningful collection of concepts.
Comment: 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.
Example:
Status: unstable
Issued: 2004-10-20
Modified: 2004-12-17
Class:Concept
URI: http://www.w3.org/2004/02/skos/core#Concept
Label: Concept
Definition: An abstract idea or notion; a unit of thought.
Example:
Status: testing
Issued: 2004-03-26
Modified: 2004-12-17
Class:ConceptScheme
URI: http://www.w3.org/2004/02/skos/core#ConceptScheme
Label: Concept Scheme
Definition: A set of concepts, optionally including statements about semantic relationships between those concepts.
Comment: Thesauri, classification schemes, subject heading lists, taxonomies, terminologies, glossaries and other types of controlled vocabulary are all examples of concept schemes.
Comment: A concept scheme may be defined to include concepts from different sources.
Example:
Status: testing
Issued: 2004-03-26
Modified: 2005-02-09
Class:OrderedCollection
URI: http://www.w3.org/2004/02/skos/core#OrderedCollection
Label: Ordered Collection
Definition: An ordered collection of concepts, where both the grouping and the ordering are meaningful.
Comment: 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'.
Example:
Super-classes: http://www.w3.org/2004/02/skos/core#Collection
Status: unstable
Issued: 2004-10-20
Modified: 2004-12-17

Properties

Property:altLabel
URI: http://www.w3.org/2004/02/skos/core#altLabel
Label: alternative label
Definition: An alternative lexical label for a resource.
Comment: 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).
Example:
Super-properties: http://www.w3.org/2000/01/rdf-schema#label
Status: testing
Issued: 2004-03-26
Modified: 2004-12-15
Property:altSymbol
URI: http://www.w3.org/2004/02/skos/core#altSymbol
Label: alternative symbol
Definition: An alternative symbolic label for a resource.
Example:
Domain: http://www.w3.org/1999/02/22-rdf-syntax-ns#Resource
Range: http://xmlns.com/foaf/0.1/Image
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:broader
URI: http://www.w3.org/2004/02/skos/core#broader
Label: has broader
Definition: A concept that is more general in meaning.
Comment: Broader concepts are typically rendered as parents in a concept hierarchy (tree).
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#semanticRelation
Additional types: http://www.w3.org/2002/07/owl#TransitiveProperty
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:changeNote
URI: http://www.w3.org/2004/02/skos/core#changeNote
Label: change note
Definition: A note about a modification to a concept.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#privateNote
Status: unstable
Issued: 2004-10-21
Property:definition
URI: http://www.w3.org/2004/02/skos/core#definition
Label: definition
Definition: A statement or formal explanation of the meaning of a concept.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#publicNote
Status: testing
Issued: 2004-03-26
Modified: 2004-10-21
Property:editorialNote
URI: http://www.w3.org/2004/02/skos/core#editorialNote
Label: editorial note
Definition: A note for an editor, translator or maintainer of the vocabulary.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#privateNote
Status: unstable
Issued: 2004-10-21
Property:example
URI: http://www.w3.org/2004/02/skos/core#example
Label: example
Definition: An example of the use of a concept.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#publicNote
Status: testing
Issued: 2004-03-26
Modified: 2004-10-21
Property:hasTopConcept
URI: http://www.w3.org/2004/02/skos/core#hasTopConcept
Label: has top concept
Definition: A top level concept in the concept scheme.
Example:
Domain: http://www.w3.org/2004/02/skos/core#ConceptScheme
Range: http://www.w3.org/2004/02/skos/core#Concept
Status: testing
Issued: 2004-08-19
Modified: 2004-10-20
Replaces: http://www.w3.org/2004/02/skos/core#TopConcept
Version info: This property replaces the deprecated skos:TopConcept class.
Property:hiddenLabel
URI: http://www.w3.org/2004/02/skos/core#hiddenLabel
Label: hidden label
Definition: 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.
Example:
Super-properties: http://www.w3.org/2000/01/rdf-schema#label
Status: unstable
Issued: 2004-12-15
Property:historyNote
URI: http://www.w3.org/2004/02/skos/core#historyNote
Label: history note
Definition: A note about the past state/use/meaning of a concept.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#publicNote
Status: unstable
Issued: 2004-10-21
Property:inScheme
URI: http://www.w3.org/2004/02/skos/core#inScheme
Label: in scheme
Definition: A concept scheme in which the concept is included.
Comment: Use rdfs:isDefinedBy to indicate a relationship between a concept and its original, defining, concept scheme.
Comment: A concept may be a member of more than one concept scheme.
Example:
Domain: http://www.w3.org/2004/02/skos/core#Concept
Range: http://www.w3.org/2004/02/skos/core#ConceptScheme
Status: testing
Issued: 2004-03-26
Modified: 2004-12-15
Property:isPrimarySubjectOf
URI: http://www.w3.org/2004/02/skos/core#isPrimarySubjectOf
Label: is primary subject of
Definition: A document for which the concept is the primary subject.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#isSubjectOf
Inverse of: http://www.w3.org/2004/02/skos/core#primarySubject
Status: unstable
Issued: 2004-10-22
Property:isSubjectOf
URI: http://www.w3.org/2004/02/skos/core#isSubjectOf
Label: is subject of
Definition: A document for which the concept is a subject.
Example:
Domain: http://www.w3.org/2004/02/skos/core#Concept
Range: http://xmlns.com/foaf/0.1/Document
Inverse of: http://www.w3.org/2004/02/skos/core#subject
Status: unstable
Issued: 2004-10-22
Property:member
URI: http://www.w3.org/2004/02/skos/core#member
Label: member
Definition: A member of a collection.
Example:
Domain: http://www.w3.org/2004/02/skos/core#Collection
Range: http://www.w3.org/1999/02/22-rdf-syntax-ns#Resource
Status: unstable
Issued: 2004-10-20
Property:memberList
URI: http://www.w3.org/2004/02/skos/core#memberList
Label: member list
Definition: An RDF list containing the members of an ordered collection.
Comment: The following rule applies for this property: [(?c skos:memberList ?l) elementOfList(?e,?l) implies (?c skos:member ?e)]
Example:
Domain: http://www.w3.org/2004/02/skos/core#OrderedCollection
Range: http://www.w3.org/1999/02/22-rdf-syntax-ns#List
Status: unstable
Issued: 2004-10-20
Property:narrower
URI: http://www.w3.org/2004/02/skos/core#narrower
Label: has narrower
Definition: A concept that is more specific in meaning.
Comment: Narrower concepts are typically rendered as children in a concept hierarchy (tree).
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#semanticRelation
Additional types: http://www.w3.org/2002/07/owl#TransitiveProperty
Inverse of: http://www.w3.org/2004/02/skos/core#broader
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:prefLabel
URI: http://www.w3.org/2004/02/skos/core#prefLabel
Label: preferred label
Definition: The preferred lexical label for a resource, in a given language.
Comment: No two concepts in the same concept scheme may have the same value for skos:prefLabel in a given language.
Example:
Super-properties: http://www.w3.org/2000/01/rdf-schema#label
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:prefSymbol
URI: http://www.w3.org/2004/02/skos/core#prefSymbol
Label: preferred symbol
Definition: The preferred symbolic label for a resource.
Comment: No two concepts in the same concept scheme may have the same value for skos:prefSymbol.
Example:
Domain: http://www.w3.org/1999/02/22-rdf-syntax-ns#Resource
Range: http://xmlns.com/foaf/0.1/Image
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:primarySubject
URI: http://www.w3.org/2004/02/skos/core#primarySubject
Label: has primary subject
Definition: A concept that is the primary subject of the document.
Comment: A document may have only one primary subject per concept scheme.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#subject
Inverse of: http://www.w3.org/2004/02/skos/core#isPrimarySubjectOf
Status: unstable
Issued: 2004-10-22
Property:privateNote
URI: http://www.w3.org/2004/02/skos/core#privateNote
Label: private note
Definition: A general note not intended for public consumption.
Comment: 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.
Example:
Super-properties: http://www.w3.org/2000/01/rdf-schema#comment
Status: unstable
Issued: 2004-10-21
Property:publicNote
URI: http://www.w3.org/2004/02/skos/core#publicNote
Label: public note
Definition: A general note intended for public consumption.
Comment: 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.
Example:
Super-properties: http://www.w3.org/2000/01/rdf-schema#comment
Status: unstable
Issued: 2004-10-21
Property:related
URI: http://www.w3.org/2004/02/skos/core#related
Label: related to
Definition: A concept with which there is an associative semantic relationship.
Example:
Super-properties: http://www.w3.org/2000/01/rdf-schema#seeAlso
http://www.w3.org/2004/02/skos/core#semanticRelation
Additional types: http://www.w3.org/2002/07/owl#SymmetricProperty
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:scopeNote
URI: http://www.w3.org/2004/02/skos/core#scopeNote
Label: scope note
Definition: A note that helps to clarify the meaning of a concept.
Example:
Super-properties: http://www.w3.org/2004/02/skos/core#publicNote
Status: testing
Issued: 2004-03-26
Modified: 2004-10-21
Property:semanticRelation
URI: http://www.w3.org/2004/02/skos/core#semanticRelation
Label: semantic relation
Definition: A concept related by meaning.
Comment: This property should not be used directly, but as a super-property for all properties denoting a relationship of meaning between concepts.
Example:
Domain: http://www.w3.org/2004/02/skos/core#Concept
Range: http://www.w3.org/2004/02/skos/core#Concept
Status: testing
Issued: 2004-03-26
Modified: 2004-10-20
Property:subject
URI: http://www.w3.org/2004/02/skos/core#subject
Label: has subject
Definition: A concept that is a subject of the document.
Comment: The following rule may be applied for this property: [(?d skos:subject ?x)(?x skos:broader ?y) implies (?d skos:subject ?y)]
Example:
Domain: http://xmlns.com/foaf/0.1/Document
Range: http://www.w3.org/2004/02/skos/core#Concept
Super-properties: http://purl.org/dc/elements/1.1/subject
Inverse of: http://www.w3.org/2004/02/skos/core#isSubjectOf
Status: unstable
Issued: 2004-10-22
Property:subjectIndicator
URI: http://www.w3.org/2004/02/skos/core#subjectIndicator
Label: subject indicator
Definition: 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.]
Comment: This property allows subject indicators to be used for concept identification in place of or in addition to directly assigned URIs.
Example:
Domain: http://www.w3.org/2004/02/skos/core#Concept
Range: http://xmlns.com/foaf/0.1/Document
Additional types: http://www.w3.org/2002/07/owl#InverseFunctionalProperty
Status: unstable
Issued: 2004-11-11

Deprecated Terms

Term:TopConcept
URI: http://www.w3.org/2004/02/skos/core#TopConcept
Replaced by: http://www.w3.org/2004/02/skos/core#hasTopConcept
Version info: This class is now deprecated. To indicate that a concept is a top concept in a scheme, now use the skos:hasTopConcept property.
Issued: 2004-03-26
Deprecated: 2004-08-19
Term:broaderGeneric
URI: http://www.w3.org/2004/02/skos/core#broaderGeneric
Replaced by: http://www.w3.org/2004/02/skos/extensions#broaderGeneric
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:broaderInstantive
URI: http://www.w3.org/2004/02/skos/core#broaderInstantive
Replaced by: http://www.w3.org/2004/02/skos/extensions#broaderInstantive
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:broaderPartitive
URI: http://www.w3.org/2004/02/skos/core#broaderPartitive
Replaced by: http://www.w3.org/2004/02/skos/extensions#broaderPartitive
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:externalID
URI: http://www.w3.org/2004/02/skos/core#externalID
Replaced by: http://purl.org/dc/elements/1.1/identifier
Version info: This property is now deprecated. Use dc:identifier instead.
Issued: 2004-03-26
Deprecated: 2004-10-20
Term:narrowerGeneric
URI: http://www.w3.org/2004/02/skos/core#narrowerGeneric
Replaced by: http://www.w3.org/2004/02/skos/extensions#narrowerGeneric
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:narrowerInstantive
URI: http://www.w3.org/2004/02/skos/core#narrowerInstantive
Replaced by: http://www.w3.org/2004/02/skos/extensions#narrowerInstantive
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:narrowerPartitive
URI: http://www.w3.org/2004/02/skos/core#narrowerPartitive
Replaced by: http://www.w3.org/2004/02/skos/extensions#narrowerPartitive
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:relatedHasPart
URI: http://www.w3.org/2004/02/skos/core#relatedHasPart
Replaced by: http://www.w3.org/2004/02/skos/extensions#relatedHasPart
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18
Term:relatedPartOf
URI: http://www.w3.org/2004/02/skos/core#relatedPartOf
Replaced by: http://www.w3.org/2004/02/skos/extensions#relatedPartOf
Version info: This term has been moved to the 'SKOS Extensions' vocabulary. See http://www.w3.org/2004/02/skos/extensions/
Issued: 2004-03-26
Deprecated: 2004-10-18

Change Log

The complete RDF description of the SKOS Core vocabulary is contained in the following file:

The CVS log for this file is included below:

RCS file: /w3ccvs/WWW/2004/02/skos/core.rdf,v
Working file: core.rdf
head: 1.37
branch:
locks: strict
access list:
symbolic names:
keyword substitution: kv
total revisions: 37;	selected revisions: 37
description:
----------------------------
revision 1.37
date: 2005/02/09 19:07:18;  author: ajm65;  state: Exp;  lines: +16 -7
Modified the definition of skos:ConceptScheme to ''A set of concepts, optionally including statements about semantic relationships between those concepts."
----------------------------
revision 1.36
date: 2004/12/17 13:43:58;  author: ajm65;  state: Exp;  lines: +11 -3
Change to skos:related - Changed the definition to mention 'associative relationships', because previous definition too broad, and also to bring in line with BS8723 definition of 'associative relationships'.
----------------------------
revision 1.35
date: 2004/12/17 13:37:39;  author: ajm65;  state: Exp;  lines: +8 -2
Change to skos:OrderedCollection - The text 'where both the grouping and the ordering are meaningful' added to the definition.
----------------------------
revision 1.34
date: 2004/12/17 13:34:05;  author: ajm65;  state: Exp;  lines: +9 -1
Change to skos:ConceptScheme - 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).
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revision 1.33
date: 2004/12/17 13:28:08;  author: ajm65;  state: Exp;  lines: +8 -1
Change to skos:Concept - 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).
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revision 1.32
date: 2004/12/17 13:23:26;  author: ajm65;  state: Exp;  lines: +10 -1
Changes to skos:Collection - The word 'meaningful' added to the definition; small change to the comment to make it clearer.
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revision 1.31
date: 2004/12/15 20:11:22;  author: ajm65;  state: Exp;  lines: +21 -5
Added skos:hiddenLabel
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revision 1.30
date: 2004/12/15 19:56:28;  author: ajm65;  state: Exp;  lines: +9 -4
Changed skos:inScheme - no longer a sub-prop of rdfs:isDefinedBy (because the latter is semantically more precise)
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revision 1.29
date: 2004/11/12 15:31:09;  author: ajm65;  state: Exp;  lines: +1 -1
added foaf namespace declaration (was missing)
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revision 1.28
date: 2004/11/11 13:12:58;  author: ajm65;  state: Exp;  lines: +1 -1
Single word change to definition of skos:subjectIndicator
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revision 1.27
date: 2004/11/11 13:07:35;  author: ajm65;  state: Exp;  lines: +30 -0
Spec sections added as subject indicators for all SKOS Core terms
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revision 1.26
date: 2004/11/11 12:52:17;  author: ajm65;  state: Exp;  lines: +4 -3
Added foaf:homepage prop to schema description
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revision 1.25
date: 2004/11/11 12:49:24;  author: ajm65;  state: Exp;  lines: +11 -13
Updated initial XML comment
----------------------------
revision 1.24
date: 2004/11/11 11:18:57;  author: ajm65;  state: Exp;  lines: +24 -1
Added 'skos:subjectIndicator' property
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revision 1.23
date: 2004/10/22 11:55:42;  author: ajm65;  state: Exp;  lines: +2 -0
Added foaf:Document as domain/range for skos:subject/isSubjectOf
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revision 1.22
date: 2004/10/22 11:52:34;  author: ajm65;  state: Exp;  lines: +1 -1
fix bug in skos:subject
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revision 1.21
date: 2004/10/22 11:42:46;  author: ajm65;  state: Exp;  lines: +54 -3
Added skos:subject, skos:isSubjectOf, skos:primarySubject, skos:isPrimarySubjectOf
----------------------------
revision 1.20
date: 2004/10/21 16:15:24;  author: ajm65;  state: Exp;  lines: +1 -1
fix bad link in example for editorialNote
----------------------------
revision 1.19
date: 2004/10/21 14:22:26;  author: ajm65;  state: Exp;  lines: +93 -19
Added historyNote, editorialNote, changeNote.
Modified scopeNote, definition, example: removed domain statement, super-prop changed to publicNote.
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revision 1.18
date: 2004/10/21 14:05:26;  author: ajm65;  state: Exp;  lines: +27 -2
publicNote and privateNote added
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revision 1.17
date: 2004/10/20 17:10:45;  author: ajm65;  state: Exp;  lines: +62 -1
Collections vocabulary added (support for 'node labels' and 'guide terms')
----------------------------
revision 1.16
date: 2004/10/20 16:36:14;  author: ajm65;  state: Exp;  lines: +24 -10
skos:externalID deprecated (use dc:identifier instead).
----------------------------
revision 1.15
date: 2004/10/20 15:17:00;  author: ajm65;  state: Exp;  lines: +75 -0
Added a change note to all updated terms
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revision 1.14
date: 2004/10/20 15:09:45;  author: ajm65;  state: Exp;  lines: +17 -2
Updated dct:modified for all terms
----------------------------
revision 1.13
date: 2004/10/20 15:07:48;  author: ajm65;  state: Exp;  lines: +10 -1
Added new comments
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revision 1.12
date: 2004/10/20 14:59:41;  author: ajm65;  state: Exp;  lines: +223 -193
Former comments on terms deprecated
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revision 1.11
date: 2004/10/20 14:49:37;  author: ajm65;  state: Exp;  lines: +18 -3
Added a skos:definition to all current terms
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revision 1.10
date: 2004/10/20 14:37:48;  author: ajm65;  state: Exp;  lines: +17 -1
Added examples to all current terms
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revision 1.9
date: 2004/10/20 14:31:32;  author: ajm65;  state: Exp;  lines: +25 -25
Added xml:lang to all rdfs:label statements
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revision 1.8
date: 2004/10/20 14:26:31;  author: ajm65;  state: Exp;  lines: +1 -1
Updated date modified for the schema
----------------------------
revision 1.7
date: 2004/10/18 16:02:44;  author: ajm65;  state: Exp;  lines: +118 -67
The following terms deprecated and replaced by terms in the 'SKOS Extensions' vocabulary
 ...
'broaderGeneric'
'broaderInstantive'
'broaderPartitive'
'narrowerGeneric'
'narrowerInstantive'
'narrowerPartitive'
'relatedHasPart'
'relatedIsPartOf'
----------------------------
revision 1.6
date: 2004/08/27 19:37:43;  author: ajm65;  state: Exp;  lines: +25 -1
Added dct:issued for all terms
----------------------------
revision 1.5
date: 2004/08/19 13:05:05;  author: ajm65;  state: Exp;  lines: +29 -3
Deprecated class skos:TopConcept
Added property skos:hasTopConcept
----------------------------
revision 1.4
date: 2004/08/03 17:31:13;  author: ajm65;  state: Exp;  lines: +1 -1
error 'ts' changed to 'vs' in namespace declaration
----------------------------
revision 1.3
date: 2004/08/03 17:10:00;  author: ajm65;  state: Exp;  lines: +75 -5
Following changes:

- doctype changed to 'rdf:RDF'
- entity 'vs' added
- xmlns:vs added
- dct:modified date updated
- dc:title changed to 'SKOS Core RDF Vocabulary'
- dc:contributor added
- term status values added for all terms
- initial XML comment rewritten
- rdfs:isDefinedBy added for al terms
----------------------------
revision 1.2
date: 2004/03/26 17:06:36;  author: danbri;  state: Exp;  lines: +208 -227
update from al
----------------------------
revision 1.1
date: 2004/03/18 15:44:12;  author: danbri;  state: Exp;
swad-e thesaurus work in progress
=============================================================================

Acknowledgements

All current and past members of the public-esw-thes@w3.org mailing list have contributed to the development of this vocabulary, and their contributions are gratefully acknowledged.

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