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This is an archived WebSchemas proposal SKOS for schema.org. See Proposals listing for more. Note: active schema.org development is now based at github


Collaborative work to enrich Schema.org with support for controlled vocabularies web publication with a SKOS description of concepts and schemes.

There has been two major discussion threads on adopting SKOS in schema.org: Schema.org for glossary, controled vocabulary, thesaurus... publication - which class to use ? in early 2012 and the more recent and longer Should we adopt SKOS? (early 2013). Both threads are in favor of seeing schema.org adopt a SKOS-like set of terms.

  • Update 2013-11-19: MiniSKOS proposal circulated. Summary: add Topic, an equivalentClass to skos:Concept, and relate schema properties to it.


  • Jean Delahousse posted a proposal on January 10 2013, which was exported (by Stéphane Corlosquet) from original Word .docx: File:Skos-schema.org-v1.pdf. This proposal has been reviewed by Antoine Isaac and Romain Wenz.
Schema.org SKOS SKOS label SKOS definition
name prefLabel preferred label The preferred lexical label for a resource, in a given language
inEnumeration inScheme is in scheme A concept may be a member of more than one concept scheme
Enumeration ConceptScheme


We propose to introduce a new sub-class of Intangible : Concept, mapped with skos:Concept. The class Enumeration is considered as equivalent to skos:ConceptScheme. We propose to add a property to Enumeration : hasTopConcept.

Open questions:


Example of schema.org/Concept that references external Concepts in the context of an article in RDFa:

  1. <div vocab="http://schema.org/" typeof="Article">
  2.   <div property="name">Roger Federer reaches the Wimbledon final</div>
  3.   <div property="body">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</div>
  4.   <div> Tags:
  5.     <a property="about" typeof="Concept" href="http://data.nytimes.com/N15335442980672796250">
  6.       <span property="name">Wimbledon Tennis Tournament</span></a>,
  7.     <a property="about" typeof="Concept" href="http://data.nytimes.com/73418278779906874903">
  8.       <span property="name">Roger Federer</span></a>,
  9.     <a property="about" typeof="Concept" href="http://data.nytimes.com/48656846912834600960">
  10.       <span property="name">Tennis</span></a>.
  11. </div>

Use cases

Todo: list people / organizations who are supporting this proposal.