[IR] Suffix Trees and Suffix Arrays

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[IR] Suffix Trees and Suffix Arrays

前缀树匹配前缀字符串是不言自明的道理. 1. 字符串的快速检索 2. 最长公共前缀(LCP) 等等树的压缩后缀树 Let s=abab, a suffix tree of s is a compressed trie of all suffixes of s=abab$ 后缀树的构建:由长到短,逐渐增加.完毕后进行“树的压缩”. 右图绿色leaf node表示对应子串的起始位置.[ith] Construct Suffix Tree O(n2) --> O(n), how? 在 1995…

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Suffix array

A suffix array is a sorted array of all suffixes of a given string. The definition is similar to Suffix Tree which is compressed trie of all suffixes of the given text. Any suffix tree based algorithm can be replaced with an algorithm that uses a suf…