Bayesian probability
Sign in to saveAlso known as Bayesianism, epistemic probability, subjective probability, subjectivism
interpretation of probability as a measure of the degree of belief of an individual assessing the uncertainty of a particular situation
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Encyclopedic overview
Bayesian probability (/ˈbeɪziən/ BAY-zee-ən or /ˈbeɪʒən/ BAY-zhən) is an interpretation of the concept of probability, in which, instead of frequency or propensity of some phenomenon, probability is interpreted as reasonable expectation representing a state of knowledge or as quantification of a personal belief.
The Bayesian interpretation of probability can be seen as an extension of propositional logic that enables reasoning with hypotheses; that is, with propositions whose truth or falsity is unknown. In the Bayesian view, a probability is assigned to a hypothesis, whereas under frequentist inference, a hypothesis is typically tested without being assigned a probability.
Excerpted from Wikipedia’s “Bayesian probability” article, available under the CC BY-SA 4.0 licence.