The article does research on combining the Website structure and the page content with assistance of Web usage mining to improve recommendation service quality.Based on the existing theories and research,we present a sort of comprehensive calculation approach concerning recommendation factor.As it is proved by the recommendation quality analysis,this approach has a good performance of optimal recommendation.

This paper analyses the process and the principle technology of text mining, and then discusses its applications and trends.

This paper puts forward a model of Snort intrusion detection system based on data mining technology. It takes the frame of Snort intrusion detection system as the foundation and makes use of data mining technology to construct the normal behavior pattern of system, which filters a majority of normal data in the network data stream, therefore it improves the detecting efficiency of Snort. At the same time, it also can detect unknown attack to some extent, so it enhances the detecting ability of Snort to unknown attack. These tests showed this model is valid.