Bivariate p-boxes

Bivariate p-boxes
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双变量 p 框

DOI:
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发表时间:
2016
期刊:
Int. J. Uncertain. Fuzziness Knowl. Based Syst.
影响因子:
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通讯作者:
Enrique Miranda
Enrique Miranda
中科院分区:
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文献类型:
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作者:
Renato Pelessoni;Paolo Vicig;Ignacio Montes;Enrique Miranda

文献摘要

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p 框是分布函数的简单概括,对于研究存在不精确性的随机数很有用。我们提出了 p 框的扩展,以涵盖随机数对的不​​精确评估,并将它们称为二元 p 框。我们分析它们相当弱的一致性属性,因为它们充其量(但通常不)相当于 2-相干性。因此,我们关注相干 p-box 的相关子类,对应于特殊域上的相干较低概率。研究了相干 p 盒的几个属性,并将其与(一维)p 盒或二元分布函数的属性进行比较。
A p-box is a simple generalization of a distribution function, useful to study a random number in the presence of imprecision. We propose an extension of p-boxes to cover imprecise evaluations of pairs of random numbers and term them bivariate p-boxes. We analyze their rather weak consistency properties, since they are at best (but generally not) equivalent to 2-coherence. We therefore focus on the relevant subclass of coherent p-boxes, corresponding to coherent lower probabilities on special domains. Several properties of coherent p-boxes are investigated and compared with those of (one-dimensional) p-boxes or of bivariate distribution functions.