A New Method to Obtain the shift-table in Boyer-Moore’s String Matching Algorithm

by Yang Wang

Datum	Value	Source
TITLE	A New Method to Obtain the shift-table in Boyer-Moore’s String Matching Algorithm	SVM HeaderParse 0.2
AUTHOR NAME	Yang Wang	SVM HeaderParse 0.2
AUTHOR AFFIL	Computer Science Dept	SVM HeaderParse 0.2
AUTHOR ADDR	, Missouri State University; Springfield, MO 65897; USA	SVM HeaderParse 0.2
ABSTRACT	The Boyer-Moore algorithm uses two pre-computed tables for searching a string: skip, which utilizes the occurrence heuristic of symbols in a pattern, and shift, which utilizes the match heuristic of the pattern. Researchers have pointed out that the difficulty of understanding the computation of the shift table has hindered utilization of the algorithm in a wider range of applications. This paper describes an alternative way to compute the shift table. We believe that the new method is more intuitive and straightforward both conceptually and logically than the original method, and thus, easier to understand and to implement. Also, the new method has O(m) complexity in both required space and time for a pattern of length m. Therefore, it preserves the high performance of the Boyer-Moore algorithm. 1.	SVM HeaderParse 0.2
CITATIONS	8 found	ParsCit 1.0