33 Research of Pattern Matching Algorithm in Intrusion Detection System
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through the research on the existing pattern matching algorithms, based on the existence of the bad character, end character and their subsequent characters, as well as the follow-precursor relationship between them, the uniqueness of the suffix character and the prefix character, and other characteristics, this paper improves the pattern matching algorithm. And the improved pattern matching algorithm in the implementation efficiency has significant improvement than the original pattern matching algorithm.