Advanced Searching Algorithms and its Behavior on Text Structures

摘要

This research investigates the behavior of the Boyer-Moore-Horspool (BMH) and the Boyer-Moore-Raita (BMR) string-matching algorithms using multilingual texts. The performance is computed based on searching for patterns in master strings. Experiments are conducted using a number of pattern lengths with many experiments repetition. The experimental results show that on average the number of comparisons per character passed in the case of the BMR is less than the number encountered by the BMH variant. The improvement is due to properties of the text structures. These experiments may lead to more theoretical and practical studies to develop new variants of algorithms. Using multilingual text structures provide more insight into the theory and structure of algorithms as multilingual text structures have different set of characters and dependencies, and the character properties have different type of structures. Since many applications of today depend on searching algorithms, therefore researchers need to explore every possibility that lead to improving the efficiency of searching and matching mechanisms. The time performance of exact string pattern matching can be greatly improved if an efficient algorithm is used. Considering, for example, the growing amount of text handled in the electronic patient records, it is worth and essential, in these cases and others, to searching for an efficient algorithm to deal with such huge items of information.