EuroVoc domains and microthesauri
Eurovoc domains and microthesauri
EuroVoc is split into 21 domains and 127 microthesauri. Each domain is divided into a number of microthesauri. A microthesaurus is considered as a concept scheme with a subset of the concepts that are part of the complete EuroVoc thesaurus.
As SKOS has no rules to define a hierarchy of concept schemes, eu:Domain and eu:Microthesaurus has been modelled as a EuroVoc specific classes.
Domains are represented as instances of the class "eu:Domain" and microthesauri as instances of the class "eu:MicroThesaurus", a rdfs:subClass of skos:ConceptScheme.
The property value "eu:domain" defines the supergroup relation between a microthesaurus and its domain. Any micro thesaurus belongs to exactly 1 domain.
The name of an eu:Domain uses skos:prefLabel, with one label per language.
The domain identifier is represented using the Dublin Core property "dc:identifier" and is part of the domain name. The format of the domain identifier is 2 digits.
The name of an eu:MicroThesaurus uses skos:prefLabel, with one label per language.
The microthesaurus identifier is represented by the property dc:identifier and is part of the microthesaurus name. The format of the microthesaurus identifier is 4 digits. The first 2-digits of the microthesaurus identifier correspond to the domain it belongs to.
One of the EuroVoc distinctive features is the limitation of polyhierarchy. However, polyhierarchy is accepted for domains 72 (Geography). Boolean property value "eu: hasPolyHierarchy "indicates whether the domain supports poly-hierarchy (true) or not (false).
The property "skos:hasTopconcept" defines the top thesaurus concepts in a microthesaurus, with no broader relationships.