Preference relation

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The term preference relation is used to refer to orderings that describe human preferences for one thing over an other.In mathematics, preferences may be modeled as a weak ordering or a semiorder, two different types of binary relation. One specific variation of weak ordering, a total preorder, is also sometimes called a preference relation. In computer science, machine learning algorithms are used to infer preferences, and the binary representation of the output of a preference learning algorithm is called a preference relation, regardless of whether it fits the weak ordering or semiorder mathematical models. Preference relations are also widely used in economics; see preference (economics).

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