An In-place Framework for Exact and Approximate Shortest Unique Substring Queries
An In-place Framework for Exact and Approximate Shortest Unique Substring Queries
复制标题
精确和近似最短唯一子串查询的就地框架
DOI:
10.1007/978-3-662-48971-0_63
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Bojian Xu
中科院分区:
文献类型:
--
作者:
W. Hon;Sharma V. Thankachan;Bojian Xu
We revisit the exact shortest unique substring (SUS) finding problem, and propose its approximate version where mismatches are allowed, due to its applications in subfields such as computational biology. We design a generic in-place framework that fits to solve both the exact and approximate k-mismatch SUS finding, using the minimum 2n memory words plus n bytes space, where n is the input string size. By using the in-place framework, we can find the exact and approximate k-mismatch SUS for every string position using a total of O(n) and \(O(n^2)\) time, respectively, regardless of the value of k. Our framework does not involve any compressed or succinct data structures and thus is practical and easy to implement.