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arXiv 2007.12989cs.AI
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基于信度网络的信息融合

Information Fusion on Belief Networks

Wentworth Institute of Technology(温特沃斯理工学院);University of Calgary(卡尔加里大学)

Shawn C. Eastwood, Svetlana N. Yanushkevich

摘要:

本文将集中在“融合”的过程中的几个观测或模型的不确定性到一个单一的合成模型。许多现有的融合方法使用主观量,如“信念强度”和处理这些量与启发式算法。本文主张支持可以客观衡量的数量,而不是主观的“信念强度”值。本文将重点讨论概率分布,更重要的是,表示概率分布集的结构,称为“可信集”。本文的新颖之处将是融合模型的分类,使用特定类型的credal集,即概率区间分布和Dempster-Shafer模型。这为信息融合算法提出了客观要求,本文提出的各种融合模型均能满足这一要求。Dempster的组合规则不满足这一要求。本文还将评估所提出的融合方法所涉及的计算挑战。

英文摘要:

This paper will focus on the process of 'fusing' several observations or models of uncertainty into a single resultant model. Many existing approaches to fusion use subjective quantities such as 'strengths of belief' and process these quantities with heuristic algorithms. This paper argues in favor of quantities that can be objectively measured, as opposed to the subjective 'strength of belief' values. This paper will focus on probability distributions, and more importantly, structures that denote sets of probability distributions known as 'credal sets'. The novel aspect of this paper will be a taxonomy of models of fusion that use specific types of credal sets, namely probability interval distributions and Dempster-Shafer models. An objective requirement for information fusion algorithms is provided, and is satisfied by all models of fusion presented in this paper. Dempster's rule of combination is shown to not satisfy this requirement. This paper will also assess the computational challenges involved for the proposed fusion approaches.

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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