Instances of the class "eu:ThesaurusTerm" represent the lexical representations (terms) of concepts in a given language. This class is a subclass of the xl:Label class.
All EuroVoc label relations are expressed between thesaurus terms and are language-dependent.
Instances of "eu:ThesaurusConcept" are linked to the corresponding terms, using the properties "xl:prefLabel" for preferred terms and "xl:altLabel" for non-preferred terms.
Terms of the thesaurus may be preferred terms or non preferred terms.
Non preferred terms may be simple or compound non preferred terms
The class "eu:PreferredTerm" contains the preferred terms instances of EuroVoc. Its property xl:prefLabel provides the lexical representation of the term in a given language.
The class "eu:SimpleNonPreferredTerm" is the class of EuroVoc simple non-preferred terms.
The class "eu:CompoundNonPreferredTerm" is the class of EuroVoc compound non preferred terms.
"eu:permutedLiteralForm" property provides the value of the permuted literal form of a term (eu:ThesaurusTerm) .
Thesaurus Terms Relations
Two classes have been settled to make the difference between the equivalence (USE/UF) and compound equivalence (USE+/UF+) relationship:
"eu:EquivalenceRelationship" is the class of equivalence relationships between a preferred term and its equivalent simple non preferred terms and may have two property values:
"eu:USE" value of the preferred term of the instance
"eu:UF" value of the the non preferred term of the instance
"eu:CompoundEquivalence" is the class of relationships between two or more preferred terms to express a compound concept.
The class properties are:
"eu:compoundNonPreferredTerm" value of a preferred term component of the instance
"eu:preferredTermComponent" value of the compound non preferred term of the instance
Note that no equivalent concept is created in this case at the concept level.
Specific associations have been modelled to represent the relationships between a term (full name) and its acronym or short name.
These properties are specialisations of the generic "xl:labelRelation".
- "eu:acronym" property specifies the value of the acronym of a thesaurus term;
- "eu:fullName" property specifies the value full name of a thesaurus term;
- "eu:shortName" property specifies the value of the short name of a thesaurus term;
- "eu:translationOf" property is language-independent and specifies the value of the translation of a thesaurus term (non preferred Term) in another language.