decision table

A decision table represents an input-output relationship as a table listing combinations of input variables and their corresponding outputs (sometiimes a boolean yes/no value). An exhaustive lsist such as this is only useful for relatively simple decsions with a small nunber of variables and alternatives, but can be a lot clear as replacement for, or alongside more rule-based or algorithmic knowledge representations.
A simple decision table to determie the kind of animal based on colour and size:

INPUT		OUPUT
colour	size	animal
grey	large	elephant
grey	small	mouse
blue	large	whale
blue	small	butterfly
pink	large	pink elephant
...	...	...

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