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Expanding state space and extension of beliefs

机译:扩大国家空间并扩大信仰

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This article provides a simple decision theoretic model in which elements of the world successively enter the decision maker's scope and the state space expands over time, which is intended to be the closest correspondence to the standard subjective expected utility theory. We propose a dynamic consistency condition that after any expansion of the scope, the preference ranking should remain unchanged over acts to which the expansion is irrelevant. Together with other natural axioms, it characterizes a model in which the decision maker's belief extends over time in order that the marginal distribution of the new belief induced over the old state space coincides with the old belief. It is extended to encompass both expansion of scope and learning events, and we characterize the model with an additional property that the decision maker's belief updating follows Bayes' rule when she learns events.
机译:本文提供了一个简单的决策理论模型,其中世界的各个要素连续进入决策者的范围,并且状态空间随着时间的推移而扩展,这旨在与标准主观预期效用理论最接近。我们提出了一个动态一致性条件,即在范围的任何扩展之后,对于与扩展无关的行为,优先顺序应该保持不变。它与其他自然公理一起,描述了一个模型,在该模型中,决策者的信念随时间扩展,以使在旧状态空间上引起的新信念的边际分布与旧信念一致。它被扩展为涵盖范围扩展和学习事件,并且我们通过额外的属性来描述该模型,决策者的信念更新遵循贝叶斯学习事件时的规则。

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