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Focused on the network security situation evaluation, a novel hierarchical evaluation system, which is based on Grey Clustering Analysis, is proposed. In this system, network attacks are classified into "Strong", "Medium", and "Weak" three harmful levels by Grey Clustering Analysis to construct a hierarchical index system. Then, the Analytic Hierarchy Process is used to calculate the impact factor of each network attack, and form the evaluation system to calculate the network security situation value. With Grey Clustering Analysis, harmful level ownership of each network attacks is determined, and each network attacks' influence can be truly reflected. Moreover, network security situation value's calculation speed can be improved by Analytic Hierarchy Process. Finally, large amounts of electric power on-site experiments indicated that the evaluation system is well performed by showing network security situation in both coarse-grained and fine-grained analysis.
Date of Conference: 27-29 June 2011