Edit Distance in Near-Linear Time: it's a Constant Factor
Edit Distance in Near-Linear Time: it's a Constant Factor
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近线性时间编辑距离:它是一个常数因子
DOI:
10.1109/focs46700.2020.00096
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Nosatzki, Negev Shekel
中科院分区:
文献类型:
--
作者:
Andoni, Alexandr;Nosatzki, Negev Shekel
We present an algorithm for approximating the edit distance between two strings of length n in time n1+ε, for any , up to a constant factor. Our result completes a research direction set forth in the recent breakthrough paper [1], which showed the first constant-factor approximation algorithm with a (strongly) sub-quadratic running time. The recent results [2], [3] have shown near-linear complexity only under the restriction that the edit distance is close to maximal (equivalently, there is a near-linear additive approximation). In contrast, our algorithm obtains a constant-factor approximation in near-linear running time for any input strings.
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期刊:
ACM Trans. Algorithms
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