A formal definition of the concepts and their relationships, as well as the terminology for identifying them, for a domain. The specification of concepts, relationships, and terms may be goal-specific. A Semantic Model designed to manage the terminology used by a particular workgroup may be different from a one designed to support the full content lifecycle, e.g., a
Core Semantic Model. In this way, a Core Semantic Model can be considered a specific type of
Content Model.There are three major types of Semantic Models:
Taxonomies,
Ontologies, and
Thesauri.