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arXiv 2402.02556math.STmath.PRstat.MLstat.TH
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一种处理不精确概率的新方法

A new approach for imprecise probabilities

Marcello Basili, Luca Pratelli

AI总结:

本文提出区间概率测度新概念,通过弱补和更新规则刻画不精确概率,并给出随机变量的区间分布与随机占优定义,最终形式化解决了凯恩斯-拉姆齐争议。

摘要:

本文引入了一种区间概率测度的新概念,能够以自然且连贯的方式表示不精确概率或不确定性。在集合代数中,我们引入了一个称为 $ψ$ 的弱补(weak complementation)概念。事件 $H$ 的区间概率测度是相对于不决事件集 $(ψ(H))^c$ 定义的,该集合包含在标准补集 $H^c$ 中。我们刻画了一类广泛的区间概率测度并定义了它们的性质。此外,我们建立了相对于 $H$ 的更新规则,并融入了统计独立性和依赖性的概念。我们给出了随机变量的区间分布,并引入了两个随机变量之间随机占优的相应定义。作为副产品,我们为长达一个世纪的凯恩斯-拉姆齐争议提供了一个形式化解。

英文摘要:

This paper introduces a novel concept of interval probability measures that enables the representation of imprecise probabilities, or uncertainty, in a natural and coherent manner. Within an algebra of sets, we introduce a notion of weak complementation denoted as $ψ$. The interval probability measure of an event $H$ is defined with respect to the set of indecisive eventualities $(ψ(H))^c$, which is included in the standard complement $H^c$. We characterize a broad class of interval probability measures and define their properties. Additionally, we establish an updating rule with respect to $H$, incorporating concepts of statistical independence and dependence. The interval distribution of a random variable is formulated, and a corresponding definition of stochastic dominance between two random variables is introduced. As a byproduct, a formal solution to the century-old Keynes-Ramsey controversy is presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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