Approximating Edit Distance in Truly Subquadratic Time: Quantum and MapReduce
Approximating Edit Distance in Truly Subquadratic Time: Quantum and MapReduce
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在真正的次二次时间中近似编辑距离:Quantum 和 MapReduce
DOI:
10.1145/3456807
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发表时间:
2021
影响因子:
2.5
通讯作者:
Seddighin, Saeed
中科院分区:
文献类型:
--
作者:
Boroujeni, Mahdi;Ehsani, Soheil;Ghodsi, Mohammad;Hajiaghayi, Mohammadtaghi;Seddighin, Saeed
Theedit distancebetween two strings is defined as the smallest number ofinsertions,deletions, andsubstitutionsthat need to be made to transform one of the strings to another one. Approximating edit distance in subquadratic time is “one of the biggest unsolved problems in the field of combinatorial pattern matching” [37]. Our main result is a quantum constant approximation algorithm for computing the edit distance in truly subquadratic time. More precisely, we give an <?TeX $O(n^{1.810})$?> quantum algorithm that approximates the edit distance within a factor of 3. We further extend this result to an <?TeX $O(n^{1.708})$?> quantum algorithm that approximates the edit distance within a larger constant factor.Our solutions are based on a framework for approximating edit distance in parallel settings. This framework requires as black box an algorithm that computes the distances of several smaller strings all at once. For a quantum algorithm, we reduce the black box tometric estimationand provide efficient algorithms for approximating it. We further show that this framework enables us to approximate edit distance in distributed settings. To this end, we provide a MapReduce algorithm to approximate edit distance within a factor of <?TeX $1+\epsilon$?>, with sublinearly many machines and sublinear memory. Also, our algorithm runs in a logarithmic number of rounds.
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DOI:
10.5555/1109557.1109644
发表时间:
2006-01
期刊:
--
影响因子:
--
作者:
Tugkan Batu;Funda Ergün;S. C. Sahinalp
通讯作者:
Tugkan Batu;Funda Ergün;S. C. Sahinalp
DOI:
10.1145/2344422.2344434
发表时间:
2008
期刊:
ACM Trans. Algorithms
影响因子:
--
作者:
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通讯作者:
Robert Krauthgamer
影响因子:
2.4
作者:
H. Krovi;A. Russell
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A. Russell
DOI:
10.1109/sfcs.2001.959878
发表时间:
2001
期刊:
Proceedings 2001 IEEE International Conference on Cluster Computing
影响因子:
--
作者:
P. Indyk
通讯作者:
P. Indyk
DOI:
--
发表时间:
1997
期刊:
Symposium on the Theory of Computing
影响因子:
--
作者:
R. Beals
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R. Beals