In decision theory, a decision rule is a function which maps an observation to an appropriate action. Decision rules play an important role in the theory of statistics and economics, and are closely related to the concept of a strategy in game theory.
In order to evaluate the usefulness of a decision rule, it is necessary to have a loss function detailing the outcome of each action under different states.
Read more about Decision Rule: Formal Definition, Examples of Decision Rules, See Also
Famous quotes containing the words decision and/or rule:
“Once the decision has been reached, close your ears even to the best counter-argument: a sign of strong character. Thus an occasional will to stupidity.”
—Friedrich Nietzsche (1844–1900)
“The condition that gives birth to a rule is not the same as the condition to which the rule gives birth.”
—Friedrich Nietzsche (1844–1900)