3 Concepts

Definition of a concept

On this page, we define what a concept is.

A concept is made up of two entities

A concept is always made up of two entities:

  • Its concept type
  • Its referent

Concepts with both a type and a referent

The concept is drawn like this:

   [Type: Referent]

where the type and the referent are separated by a colon. For example:

   [Person: John]
   "There exists a person whose name is John"

Here, "Person" is the concept type, and "John" is the referent.

Concepts with only a type

If the referent is blank, the concept is drawn like this:

   [Type]

For example:

   [Bus]
   "There exists a bus"

The type can never be blank.

Next

We now discuss concept types in a little more detail.


Prev: 2.8 Quiz: Conceptual graphs
Up: Part I: Graphs
Next: 3.1 Concept types