A Unified Algorithm for Accelerating Edit-Distance Computation via Text-Compression
A Unified Algorithm for Accelerating Edit-Distance Computation via Text-Compression
复制标题
一种通过文本压缩加速编辑距离计算的统一算法
DOI:
10.4230/lipics.stacs.2009.1804
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
Oren Weimann
中科院分区:
文献类型:
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作者:
D. Hermelin;G. M. Landau;Shir Landau Feibish;Oren Weimann
We present a unified framework for accelerating edit-distance computation between two compressible strings using straight-line programs. For two strings of total length $N$ having straight-line program representations of total size $n$, we provide an algorithm running in $O(n^{1.4}N^{1.2})$ time for computing the edit-distance of these two strings under any rational scoring function, and an $O(n^{1.34}N^{1.34})$ time algorithm for arbitrary scoring functions. This improves on a recent algorithm of Tiskin that runs in $O(nN^{1.5})$ time, and works only for rational scoring functions. Also, in the last part of the paper, we show how the classical four-russians technique can be incorporated into our SLP edit-distance scheme, giving us a simple $\Omega(\lg N)$ speed-up in the case of arbitrary scoring functions, for any pair of strings.
DOI:
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发表时间:
2016
期刊:
影响因子:
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作者:
Shuhei Denzumi
通讯作者:
Shuhei Denzumi