Network Security Evaluation Based on Variable Weight Fuzzy Cloud Model

Abstract

In order to solve the problem that the evaluation index is difficult to be accurately quantified in the network security assessment, fuzzy comprehensive evaluation method is used to evaluate it. Using cloud model to construct the membership function expresses fuzzy and stochastic characterization of the evaluation index. Then combine the two characters to make up a mapping between quantitative and qualitative indexes for the transformation between precise values and qualitative assessment values. Next, the weight value of the evaluation index is adjusted by using the variable weight principle. This method can reflect the utility value of the data, which makes it more objective to distribute weight value.