基于小生境策略的否定選擇算法利用在搜索空間中計算檢測器之間的海明距離，構(gòu)建小生境；定義適應(yīng)度函數(shù)與親合力函數(shù)相關(guān)，更客觀地反映檢測器的檢測能力；利用進化策略，進行遺傳操作，而生成多樣性和通用性的最佳檢測器集。同時該算法可以減少生成檢測器的時間開銷。
關(guān)鍵詞 小生境；否定選擇；檢測器；匹配規(guī)則；網(wǎng)絡(luò)入侵檢測
Algorithm Research for Generating Diversity Detectors Zhang Hong1 , Cai Huan fu1 , Gao Ping an2 （1. Department of Computer Science and Technolgy , Guangdong University of Finance, Guangzhou 510521, China; 2. School of Information Science and Engineering Central South University, Changsha 410083, China） Abstract A negative selection algorithm with niching strategy can generate diversity and generality of detector sets. By calculating Hamming distance between two arbitrary detectors insearch space, niching of detectors is built. A new approach to define the fitness function is proposed. The fitness function is a relational function of the detector’s affinity function. And computational time can be reduced.
Keywords niching, negative selection, detectors, match rule, network intrusion detection