摘要
海量数据环境下入侵检测系统中误报数据对攻击事件的分析带来了很大干扰,针对入侵检测中大量误报,提出一种基于误报消除指标和DBN网络结构相结合的适应度评价标准,基于上述标准提出一种寻优DBN网络结构的改进PSO算法,并将该DBN用于入侵检测中,以提高入侵检测系统效率。实验结果表明,上述算法构建的DBN消除率平均值比改进FCM和改进K-means算法分别高16.78%和11.61%,误消除率平均值比改进FCM、改进K-means算法分别低6.475%和3.142%,具备良好误报消除效果。
The alarm data in intrusion detection system under the massive data environment are mixed with a large amount of false alarm data, which brings a great deal of interference to the analysis of the attack event. For the large number of false alarms in intrusion detection, the paper proposed a fitness evaluation criterion based on the combination of false positive elimination indicators and DBN network structure. Based on this criterion, the paper proposed an improved PSO algorithm for optimizing the DBN network structure, and the DBN used in intrusion detection to improve the efficiency of the intrusion detection system. The experimental results show that the average elimination rate of the DBN built by the paper's method is 16.78% and 11.61% higher than those of the Improved FCM and Improved K-means algorithms, respectively. The average of the false elimination rate is 6.475% and 3.142% lower than the Improved FCM and Improved K-means algorithms, respectively, which has good false alarm elimination effect.
引文
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