Improved Bounds for Rectangular Monotone Min-Plus Product

Improved Bounds for Rectangular Monotone Min-Plus Product
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矩形单调最小加乘积的改进界限

DOI:
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发表时间:
2022
影响因子:
0.5
通讯作者:
Anita Dürr
Anita Dürr
中科院分区:
计算机科学4区
文献类型:
--
作者:
Anita Dürr

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在最近的突破性论文中,Chi等人。 (stoc'22)引入$ \ tilde {o}(n^{\ frac {3 + \ omega} {2}} {2}})$ time算法来计算两个尺寸的两个平方矩阵$ n \ pimes $ n \ times n \ times monotone min-plus product n $和条目由$ o(n)$界定。这在先前的$ \ tilde o(n^{\ frac {12 + \ omega} {5}}})$ time算法上大大改善,因此,其应用程序的界限提高了界限。其他几种应用涉及矩形矩阵之间的单调最小产品,即使Chi等人的算法似乎适用于矩形情况,也不简单地进行概括。在本文中,我们介绍了Chi等人的算法的概括。求解具有多项式有界值的矩形矩阵的单调最小产品。接下来,我们使用此更快的算法来改善矩形单调最小产品的以下应用程序:$ m $ bunged的单源替换路径,批处理范围模式,$ k $ -dyck编辑距离和所有对的2-透射率最短路径。我们还使用Chi等人的算法提高了未加权树编辑距离的运行时间。
In a recent breakthrough paper, Chi et al. (STOC'22) introduce an $\tilde{O}(n^{\frac{3 + \omega}{2}})$ time algorithm to compute Monotone Min-Plus Product between two square matrices of dimensions $n \times n$ and entries bounded by $O(n)$. This greatly improves upon the previous $\tilde O(n^{\frac{12 + \omega}{5}})$ time algorithm and as a consequence improves bounds for its applications. Several other applications involve Monotone Min-Plus Product between rectangular matrices, and even if Chi et al.'s algorithm seems applicable for the rectangular case, the generalization is not straightforward. In this paper we present a generalization of the algorithm of Chi et al. to solve Monotone Min-Plus Product for rectangular matrices with polynomial bounded values. We next use this faster algorithm to improve running times for the following applications of Rectangular Monotone Min-Plus Product: $M$-bounded Single Source Replacement Path, Batch Range Mode, $k$-Dyck Edit Distance and 2-approximation of All Pairs Shortest Path. We also improve the running time for Unweighted Tree Edit Distance using the algorithm by Chi et al.
更快的单调最小加产品、范围模式和单一来源替换路径
DOI: --
发表时间: 2021
期刊: and Programming (ICALP 2021
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