一种改进的入侵检测阴性选择免疫算法  

An Improved Intrusion Detection Negative Selection Immune Algorithm

作　　者：张海英[1] 管洪娜[1] 潘永湘[1] 

机构地区：[1]西安理工大学自动化与信息工程学院,西安710048

出　　处：《计算机工程与应用》2005年第30期35-37,共3页Computer Engineering and Applications

摘　　要：针对入侵检测系统阴性选择免疫算法中字符串空间收敛效果差以及运行成本高的缺点,在实验的基础上总结出一种基于计算匹配概率公式的改进算法,该算法与字符串长度无关。基于该算法,对算法中的几个关键参数进行了仿真实验,分析了参数对阴性选择免疫算法的收敛速度、检测失败率等的影响。理论研究与仿真结果均表明,新算法具有更好的收敛速度和检测效果,而且时间空间可调。We have summed up an improved algorithm based on matching probabillty,which aims at a weakness in the original algorithm that is the exponential cost of generating detectors.This algorithm is independent of the length of string.Based on the algorithm,experimentations on parameters are undertaken,and discussions about parameters are made on the effectiveness of the algorithm including convergence speed,undetected probability.Theory study and experimental results appear that the new algorithm is provided with better effect,and tunable time and tunable space.

关 键 词：部分匹配规则 匹配概率 改进算法 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]