Intrusion Detection Method Based on Density and Optimal Clustering Number
- Received Date: 15/05/2018
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Key words:
- clustering algorithm /
- optimal clustering number /
- intrusion detection /
- effectiveness evaluation /
- density clustering
Abstract: According to the problems of clustering algorithm in the application of intrusion detection, such as parameter presupposition, clustering effectiveness evaluation and unknown attack type detection, an improved algorithm based on density and optimal clustering number has been proposed. And according to the distribution of the samples, the initial clustering center has been determined heuristically, a new internal evaluation index has been proposed from the point of view of the geometric structure of the samples, and the optimal clustering number has been determined. On this basis, an incremental intrusion detection model has been designed to realize the dynamic adjustment of the clustering center and the number of clusters. Experimental results show that compared with K-means and other two improved clustering algorithms, the new algorithm has faster convergence speed and higher clustering accuracy, and can effectively cluster unknown network behaviors, and has better intrusion detection effect.