Types of Models

Physical models

• Physical (touchable) representations.
• A smaller or larger physical copy of an object.

Abstract models

• Generalisations of reality that remove specific details in favour of general information which is relevant for the purpose.

Object models

• Represent, describe and simplify the appearance, structure, organisation and functioning of things (objects).

Process models

• Represent, describe and simplify the dynamic nature of processes.

Descriptive Models

• Describe the reality as it is or as it is believed to be.
• E.g. mathematical models (see below).
• Useful for satisficing.

Mathematical Models

• Describe reality using mathematical language and techniques, often variables and systems of equations that relate outputs to inputs.

Simulations

• Computerised models of dynamic processes.