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Economics. In decision theory, the von Neumann–Morgenstern (VNM) utility theorem demonstrates that rational choice under uncertainty involves making decisions that take the form of maximizing the expected value of some cardinal utility function. This function is known as the von Neumann–Morgenstern utility function.
The expected utility hypothesis is a foundational assumption in mathematical economics concerning decision making under uncertainty. It postulates that rational agents maximize utility, meaning the subjective desirability of their actions. Rational choice theory, a cornerstone of microeconomics, builds this postulate to model aggregate social ...
Decision theory or the theory of rational choice is a branch of probability, economics, and analytic philosophy that uses the tools of expected utility and probability to model how individuals should behave rationally under uncertainty. [1][2] It differs from the cognitive and behavioral sciences in that it is prescriptive and concerned with ...
In behavioral economics, cumulative prospect theory (CPT) is a model for descriptive decisions under risk and uncertainty which was introduced by Amos Tversky and Daniel Kahneman in 1992 (Tversky, Kahneman, 1992). It is a further development and variant of prospect theory. The difference between this version and the original version of prospect ...
Info-gap decision theory. Info-gap decision theory seeks to optimize robustness to failure under severe uncertainty, [1][2] in particular applying sensitivity analysis of the stability radius type [3] to perturbations in the value of a given estimate of the parameter of interest. It has some connections with Wald's maximin model; some authors ...
Ellsberg paradox. In decision theory, the Ellsberg paradox (or Ellsberg's paradox) is a paradox in which people's decisions are inconsistent with subjective expected utility theory. John Maynard Keynes published a version of the paradox in 1921. [1] Daniel Ellsberg popularized the paradox in his 1961 paper, "Risk, Ambiguity, and the Savage ...
t. e. In welfare economics and social choice theory, a social welfare function —also called a social ordering, ranking, utility, or choice function —is a function that ranks a set of social states by their desirability. Each person's preferences are combined in some way to determine which outcome is considered better by society as a whole. [1]
Ambiguity aversion. In decision theory and economics, ambiguity aversion (also known as uncertainty aversion) is a preference for known risks over unknown risks. An ambiguity-averse individual would rather choose an alternative where the probability distribution of the outcomes is known over one where the probabilities are unknown.