an internal representation of the world; an organization of concepts and actions that can be revised by new information about the world

a description or representation of something that is real or imaginary

a diagrammatic outline of something that conveys its essential characteristics

a more abstract representation than a direct perceptual experience

an underlying representation of knowledge that guides the current processing of information and often leads to distortions in attention, memory, and comprehension

a pair of conceptual glasses that filters the perceptual signals through a point of view, or a hypothesis about the world

A diagrammatic representation of databases and their relationships.

A formal representation with a defined set of symbols and rules that govern the formation of a representation using the symbols.