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arXiv 1407.8151cs.AIstat.ME
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置信函数的一致变换

Consistent transformations of belief functions

Oxford Brookes University(牛津布鲁克斯大学)

Fabio Cuzzolin

摘要:

一致性信念函数表示一致或非矛盾证据的集合,但它们大多是信念演算中一致性知识库的对应物。使用一致的转换cs[.]因此,在推理过程中保证一致性是可取的,并推广了经典逻辑中的类似技术。变换可以通过最小化原始置信函数和一致置信函数集合之间的适当距离度量来获得。我们在这里集中的情况下,距离测量使用经典的Lp规范,在“质量空间”和“信仰空间”表示的信仰功能。虽然质量一致近似将未聚焦在框架的选定元素上的质量重新分配给整个框架或平等地分配给元素的所有超集,但置信空间中的近似确实根据“聚焦一致变换”原理区分这些焦点元素。不同的近似解释和比较,与例子的帮助。

英文摘要:

Consistent belief functions represent collections of coherent or non-contradictory pieces of evidence, but most of all they are the counterparts of consistent knowledge bases in belief calculus. The use of consistent transformations cs[.] in a reasoning process to guarantee coherence can therefore be desirable, and generalizes similar techniques in classical logic. Transformations can be obtained by minimizing an appropriate distance measure between the original belief function and the collection of consistent ones. We focus here on the case in which distances are measured using classical Lp norms, in both the "mass space" and the "belief space" representation of belief functions. While mass consistent approximations reassign the mass not focussed on a chosen element of the frame either to the whole frame or to all supersets of the element on an equal basis, approximations in the belief space do distinguish these focal elements according to the "focussed consistent transformation" principle. The different approximations are interpreted and compared, with the help of examples.

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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