针对当前多个IDS的相互协作带来的海量报警数据，提出一种基于决策树的IDS报警数据融合技术，介绍决策树及其构造算法ID3，并利用决策树改进IDS报警数据融合中的属性匹配融合技术，提高了融合效率，融合后的报警数据降低了漏警率。实验证明了该方法的有效性。%In order to reduce the amount of security data produced by the collaboration of a lot of intrusion detection systems , the paper puts forward an IDS security data fusion technology based on decision tree and introduces both itself and its building arithmetic called ID 3. Then it adopts decision tree to ameliorate the attribute matching fusion technology in IDS security data fusion ,so that its fusion efficiency is in-creased and its missing rate of fused security data is decreased .Experiment confirms the validity of the method .
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