0D model

A model with no dimensions, typically used for data that can be represented as a single value.

1D model

A model with one dimension, typically used for data that can be represented as a line.

2D model

A model with two dimensions, typically used for data that can be represented as a plane.

3D model

A model with three dimensions, typically used for data that can be represented as a three-dimensional object.

4D model

A model with four dimensions, typically used for data that can be represented as a four-dimensional object.

Absolute accuracy

The closeness of a measured value to the true value.

Absolute coordinates

Coordinates that are relative to an arbitrary starting point, rather than relative to another object.

Absolute positional accuracy

The closeness of a feature’s recorded position to its true position.

Acceptable use policy (AUP)

A policy that defines acceptable use of a resource.

Address

A unique identifier for a specific location.