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The pattern matching technique is a significant operation in computer science. Though the analysis of the commonly used single pattern matching algorithm—BM and of the existing improved algorithm— BMH, a new improved algorithm was proposed based on BMH. Considering the feature of the text string and the pattern string, this algorithm fully used the information which appeared in the text string but while not exist in the pattern string to expedite jumps toward right scope after the match defeat, effectively reducing the match times. The experiment result indicates that this algorithm can reduce the number of comparisons and that of the pattern string’s skip, and raise the match efficiency greatly.

KEYWORDS

pattern matching; BM algorithm; BMH algorithm; Improvement of BMH algorithms

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Autor: Shisong Xiao, Chuanfen Zheng, Zhanglan Zhou, Junying Guo

Fuente: http://www.scirp.org/



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