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Intrusion detection plays an important part in network security today. BP algorithm which is an algorithm in artificial intelligences can also be used in IDS. This paper make use of improved BP algorithm compared to the traditional one, the new algorithm brings us higher speed in constringency and more precise in detection .The new algorithm solves the difficulties of real-time system.
The characteristic of data stream is that it has a huge size and its data change continually, which need to be responded quickly, since the times of query is limited. The continuous query and data stream approximate query model are introduced in this paper. Then, the query optimization of data stream and traditional database are compared. Finally, technology of continuous query optimization over data...
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