July 2018
Beginner
202 pages
5h 4m
English
Content preview from Beginning Java Data Structures and Algorithms
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Aho–Corasick
The Aho-Corasick algorithm is a string searching algorithm invented by Alfred V. Aho and Margaret J. Corasick. Similar to the extended version of the Rabin-Karp algorithm, it is capable of matching elements of a dictionary (set of words) within an input text. The idea behind it is to build a finite state machine that enables matching all strings of the dictionary simultaneously. The algorithm is linear in the length of the strings, plus the length of the searched text, plus the number of output matches. If n is the length of the searched text, m is the sum of the length of all words in the dictionary, and z is the total number of occurrences of words in the text.
Therefore, the time complexity of the Aho-Corasick algorithm is ...
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