Intrusion Detection Technique Based on the Grey Theory

摘要

The detection technique is designed and equipped to ensure the security of the computer system, and to find and report the unauthorized and the abnormal phenomena of the system on time. It is a technique used to detect the behavior that goes against the security principle of the computer system. The author applies the grey theory to build a instrusion detection data based on GM(1,1)model to compensate the data preprocessing model, and an index reducing algorithm which is based on grey relation. They have some characteristics, such as a few samples, low complexity, easy procedural realization, and can solve the renewed samples quickly. We have had a demonstration analysis, which shows that these models can help to reduce the occupied system resources obviously, enhance the timeliness and accuracy, and reduce rate of undetected errors and false retrieval.