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An ex post facto law [1] is a law that retroactively changes the legal consequences or status of actions that were committed, or relationships that existed, ...
Ex-ante is used most commonly in the commercial world, where results of a particular action, or series of actions, are forecast (or intended). The opposite of ex-ante is ex-post (actual) (or ex post). Buying a lottery ticket loses you money ex ante (in expectation), but if you win, it was the right decision ex post. [2]
ex post: from after "Afterward", "after the event". Based on knowledge of the past. Measure of past performance ex post facto: from a thing done afterward: Said of a law with retroactive effect ex professo: from one declaring [an art or science] Or 'with due competence'. Said of the person who perfectly knows his art or science. Also used to ...
Every ex post facto law must necessarily be retrospective; but every retrospective law is not an ex post facto law: The former, only, are prohibited. Every law that takes away, or impairs, rights vested, agreeably to existing laws, is retrospective, and is generally unjust, and may be oppressive; and it is a good general rule, that a law should ...
Ex-ante conditionality requires a country to meet certain conditions and prove it can maintain them before it will receive any aid. [2] Traditionally, the IMF lends funds based on ex-post criteria, which might induce moral hazard behavior by the borrowing country. The moral hazard problem appears when a government behaves in a risky manner in ...
post factum: after the fact: Not to be confused with ex post facto. post festum: after the feast: Too late, or after the fact post hoc ergo propter hoc: after this, therefore because of this: A logical fallacy where one assumes that one thing happening after another thing means that the first thing caused the second. post meridiem (p.m.) after ...
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In finance, Jensen's alpha [1] (or Jensen's Performance Index, ex-post alpha) is used to determine the abnormal return of a security or portfolio of securities over the theoretical expected return. It is a version of the standard alpha based on a theoretical performance instead of a market index .