Approximating edit distance in truly subquadratic time: Quantum and mapreduce

M Boroujeni, S Ehsani, M Ghodsi… - Journal of the ACM …, 2021 - dl.acm.org
The edit distance between two strings is defined as the smallest number of insertions,
deletions, and substitutions that need to be made to transform one of the strings to another …

Edit distance in near-linear time: It's a constant factor

A Andoni, NS Nosatzki - 2020 IEEE 61st Annual Symposium on …, 2020 - ieeexplore.ieee.org
We present an algorithm for approximating the edit distance between two strings of length n
in time n 1+ ε, for any, up to a constant factor. Our result completes a research direction set …

Quantum meets fine-grained complexity: Sublinear time quantum algorithms for string problems

F Le Gall, S Seddighin - Algorithmica, 2023 - Springer
Longest common substring (LCS), longest palindrome substring (LPS), and Ulam distance
(UL) are three fundamental string problems that can be classically solved in near linear time …

[PDF][PDF] Almost linear size edit distance sketch

M Koucký, ME Saks - Proceedings of the 56th Annual ACM Symposium …, 2024 - dl.acm.org
We design an almost linear-size sketching scheme for computing edit distance up to a given
threshold k. The scheme consists of two algorithms, a sketching algorithm and a recovery …

Approximation algorithms for LCS and LIS with truly improved running times

A Rubinstein, S Seddighin, Z Song, X Sun - SIAM Journal on Computing, 2023 - SIAM
Longest common subsequence (LCS) is a classic and central problem in combinatorial
optimization. While LCS admits a quadratic time solution, recent evidence suggests that …

Constant factor approximations to edit distance on far input pairs in nearly linear time

M Koucký, M Saks - Proceedings of the 52nd Annual ACM SIGACT …, 2020 - dl.acm.org
For any T≥ 1, there are constants R= R (T)≥ 1 and ζ= ζ (T)> 0 and a randomized algorithm
that takes as input an integer n and two strings x, y of length at most n, and runs in time O (n …

Approximating edit distance within constant factor in truly sub-quadratic time

D Chakraborty, D Das, E Goldenberg… - Journal of the ACM …, 2020 - dl.acm.org
Edit distance is a measure of similarity of two strings based on the minimum number of
character insertions, deletions, and substitutions required to transform one string into the …

Locally consistent decomposition of strings with applications to edit distance sketching

S Bhattacharya, M Koucký - Proceedings of the 55th Annual ACM …, 2023 - dl.acm.org
In this paper we provide a new locally consistent decomposition of strings. Each string x is
decomposed into blocks that can be described by grammars of size O (k)(using some …

How compression and approximation affect efficiency in string distance measures

A Ganesh, T Kociumaka, A Lincoln, B Saha - … of the 2022 Annual ACM-SIAM …, 2022 - SIAM
Real-world data often comes in compressed form. Analyzing compressed data directly
(without first decompressing it) can save space and time by orders of magnitude. In this …

Approximating edit distance in the fully dynamic model

T Kociumaka, A Mukherjee… - 2023 IEEE 64th Annual …, 2023 - ieeexplore.ieee.org
The edit distance is a fundamental measure of sequence similarity, defined as the minimum
number of character insertions, deletions, and substitutions needed to transform one string …