ABSTRACT
Frequently used form of knowledge representation that uses a graph-like notation system. Originally developed to model associative memory, semantic networks have evolved into general knowledge representation schemes. Semantic networks represent by using a hierarchy of concepts organized by a primitive relation such as ‘is A’ or ‘PART OR’ Further two-place relations (roles) are defined by using these. The main task in developing semantic networks consists in establishing the inventory of semantic relations between concepts. Simple semantic networks are formally a restricted variant of predicate logic. Current developments in knowledge representation, such as KL-ONE, are based on semantic networks.
