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The a-MEU model: A comment

机译:MEU模型:评论

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In Ghirardato et al. (2004) [7], Ghirardato, Macheroni and Marinacci propose a method for distinguishing between perceived ambiguity and the decision-maker's reaction to it. They study a general class of preferences which they refer to as invariant biseparable. This class includes CEU and MEU. They axiomatize a subclass of a-MEU preferences. If attention is restricted to finite state spaces, we show that any a-MEU preference relation, satisfies GMM's axioms if and only if a = 0 or 1, that is, the preferences must be either maxmin or maxmax. We show by example that these axioms may be satisfied when the state space is [0, 1].
机译:在Ghirardato等人中。 (2004)[7],Ghirardato,Macheroni和Marinacci提出了一种区分感知到的歧义和决策者对此的反应的方法。他们研究了一般的偏好类别,他们将其称为不变的两分形式。此类包括CEU和MEU。他们公理了a-MEU偏好的子类。如果注意仅限于有限的状态空间,我们证明,只有当a = 0或1时,任何a-MEU偏好关系都满足GMM的公理,也就是说,偏好必须是maxmin或maxmax。通过示例显示,当状态空间为[0,1]时,可以满足这些公理。

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