基于灰色关联分析的网络可生存性态势评估研究

Study on Situation Evaluation for Network Survivability Based on Grey Relation Analysis

通过分析各关键服务性能指标值评估前后的变化,提出了一种基于灰色关联分析的网络可生存性态势的定量评估方法.由规范化的区间数性能指标决策矩阵入手,应用灰色关联分析评估出各关键服务的最优从属度与可生存性概率,然后基于网络“熵差”评估出各关键服务的生存性态势变化,最后得到整个网络系统可生存性态势的综合评估.经过实例测试与仿真,表明该方法能够比较合理地评估出实际的网络可生存性态势.

Through evaluating the changes of key servicest performance index value before and after it was assessed, this paper proposed an quantitative evaluation method about network survivability situation based on grey relation analysis. Starting with normalizing interval number performance index decision-making metrics, it applied grey relation analysis to assess the best affiliate degree and survivability probability of every key service. Then it assessed the changes of every key servicers survivability situation based on network entropy difference. Finally, it gained the synthesis evaluation about the whole network system. An instance and simulation are given to show the proposed method can effectively evaluate the actual survivability situation of network system.