Anomaly detection model of user behavior based on principal component analysis

A new anomaly detection model which is based on principal component analysis (PCA) is proposed in this paper. Our schema proposes a method to extract the user's behavior and analyzes the features selected as representative of the user's access. The PCA method is introduced to the anomaly detection model which adopts its improvements to make it more consistent with anomaly detection system design to describe the user's behavior more completely and to improve the efficiency and stability of the algorithm. This paper also uses our scheme to the anomaly detection of the database system. Finally, the data sets from the internet are used to test the feasibility of this model. The experimental results show that our model can detect normal and abnormal user behavior precisely and effectively.