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Die Hierarchierelationen sind das Rückgrat eines Thesaurus. Sie spielen die entscheidene Rolle bei der Suchausweitung über die Hierarchieleiter im Information-Retrieval (Explode).
Auszug aus ISO 25964-1:2011:
The hierarchical relationship may be one of three types, corresponding to three logically different situations as follows:
- a) the generic relationship;
- b) the hierarchical whole-part relationship;
- c) the instance relationship.
Each of these leads to hierarchies that are amenable to a logical test through reference to the types of concept involved, for example those listed in 5.1.2. Every subordinate concept should belong to the same inherent category as its superordinate concept, i.e. both the broader and narrower term should represent a thing, or an action, or a property, etc. (See additional discussion of facet analysis in Clause 11.)
EXAMPLE 2
- a) "metals" (a class of materials) and "casting" (an action) represent different types of concept and, therefore, cannot be related hierarchically;
- b) "metals" and "gold" both represent materials and could, therefore, be hierarchically related.
Logische Bedingungen hierarchischer Relationen
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