Abstract: Increasing sophistication and diversification of network attacks challenge network security seriously.Evaluating intrusion detection system thoroughly and objectively has important implications with various technology-based intrusion detection systems continuously emerging.The evaluation methods most of which involve few evaluation metrics have their own weaknesses such as partial and subjective considerations.Aiming at these issues,a general evaluation system of intrusion detection systems was introduced which can be applied in typical intrusion detection systems,including universal and credible indexes chosen by specific principles.And throught the introduction of AHP and the variation coefficient method,hybrid AHP comprehensive evaluation model was constructed.Finally the algorithm of comprehensive evaluation of mixed layer analysis method and coefficient of variation method was realized.The comprehensive evaluation method of subjective and objective evaluation method can accurately complete the evaluation of the IDS task.

Key words: Intrusion detection system,Index system,AHP method,Variation coefficient method,Mixed AHP comprehensive evaluation model