可生存系统认知性的评估方法

针对自主可识别性机制,基于最短K-路径算法,提出一种可生存系统认知性的评估机制.首先,建立了可生存系统认知性评估的框架结构,给出了认知状态转移矩阵和认知评估指标;然后,对可生存系统的认知生存能力进行量化建模;最后,对某网络安全态势感知系统,针对DoS攻击行为,进行了认知性能的仿真验证,结果表明,所提方法如实反映了系统在不同攻击参数下认知性的动态演化,分析了系统中存在的生存威胁,验证了所提方法的可行性.

Cognition Evaluation for Survivable System

The autonomous recognition mechanism on survivability is still in the ascendant, and the cog-nition is the realization premise of the recognition. A cognitive evaluation mechanism for survivable sys-tem was proposed based on the shortest K-path algorithm. Firstly, a framework structure of the cognitive evaluation for survivable system is established, the cognitive state transfer matrix and cognitive evaluation index are given. Then, a quantitative model for the cognitive survivability of the system is made. Finally, a cognitive performance simulation experiment in some network security situation awareness system is car-ried out under DoS attacks. Experiment shows that the presented method faithfully reflects the dynamic e-volution of cognitive performance under different attack parameters, analyses the survival threat of the sys-tem and validates the effectiveness of the proposed method.