Abstract:

The structure of modern systems is very complex, and the performance evaluation is the comprehensive evaluation of multiple levels and multiple objectives. During the process of evaluation, uncertainty exists widely. In order to use and process the uncertainty and improve the creditability of system evaluation, this paper combines the cloud theory and the information fusion theory and put forward  a novel evaluation method of system performance. The cloud theory and the information fusion theory have their own advantages in processing uncertain information. The union of them can excavate more valuable implicit information. The method promoted in the paper is more scientific and more visual. Firstly, the paper introduces the basic theory. Secondly, it studies the mapping method between nature variable and quantity variable. Thirdly, it constructs a system performance evaluation model. Finally, the validity of the method is verified by an example.The method in this paper is new exploration of the combined use of the cloud theory and the information fusion theory.

Key words: cloud theory；information fusion；cloud model