An explicit
Model is a
consciously articulated, interpretive description of a target
System that
can be the object of the modelling system’s attention.This is in contrast to
Implicit
Models.
Explicit models are built from Concepts and thus systems of concepts. As such, they can take various forms,
for example, texts, diagrams, plots of empirical data, objects, or mathematical equations. These “external representations” are tools in terms of which the model is expressed.Bailer-Jones (2009), 186
A typical expression of an explicit model is a Theory.
In biological systems, explicit models have evolved for offline reasoning:
[I]f the organism carries a ‘small-scale model’’ of external reality and of its own possible actions within its head, it is able to try out various alternatives, conclude which is the best of them, react to future situations before they arise, utilise the knowledge of past events in dealing with the present and future, and in every way to react in a much fuller, safer, and more competent manner to the emergencies which face it.Craik (1943), 61
References
- Bailer-Jones (2009): Scientific Models in Philosophy of Science
- Craik (1943): The Nature of Explanation