# Definition:Empirical Model

## Definition

Let $P$ be a real-world phenomenon whose underlying theory is not understood.

Then in order to construct a mathematical model, it is necessary to monitor and record the output while measuring the input conditions.

Hence the model is built up from observation and imitation.

Such a model is referred to as an empirical model.

## Sources

$1$: Introduction:
$1.3$ Basic Ideas in Model Building:
$1.3.2$ Iterative Stages in the Selection of a Model