HASSET is currently available as a SKOS Concept Scheme. Concepts, their labels, relations and notes are the basic notions for an RDF /SKOS/XKOS concept scheme.
Concepts are ‘units of thought’ that exist in a domain. Concepts are represented by terms. In SKOS concepts are formalised as skos:concept, identified by dereferenceable URIs (URLs). In Skosmos, URIs are shown on each concept page.
Terms are the actual names used to refer to a concept. For example, PUBLIC HEALTH, HOUSING, etc.
Labels are expressed by means of SKOS predicates:
Hierarchical relations between concepts are expressed in SKOS by the predicates skos:broader and skos:narrower, which correspond to the classical thesaurus relations Broader/Narrower Term (BT/NT).
Non-hierarchical relations express a notion of ’relatedness’ between concepts and are represented in SKOS via the skos:related predicate, which corresponds to the classical thesaurus relation Related Term (RT).
Definitions are expressed as ‘skos:definition’
Scope Notes are expressed as ‘skos:scopeNote’
History Notes are expressed as ‘skos:historyNote’
Definition Sources are expressed as ‘xkos:additionalContentNote’
The table below shows the correspondence between SKOS names, those used in Skosmos (see the Using HASSET page) and the previous HASSET Thesaurus Management System (TMS).
Previous HASSET TMS
Use For term
Scope note source