Computing minimum weight cycle in the CONGEST model

V Manoharan, V Ramachandran - … of the 43rd ACM Symposium on …, 2024‏ - dl.acm.org
Minimum Weight Cycle (MWC) is the problem of finding a simple cycle of minimum weight in
a graph G=(V, E). This is a fundamental graph problem with classical sequential algorithms …

Quantum complexity of weighted diameter and radius in CONGEST networks

X Wu, P Yao - Proceedings of the 2022 ACM Symposium on …, 2022‏ - dl.acm.org
This paper studies the round complexity of computing the weighted diameter and radius of a
graph in the quantum CONGEST model. We present a quantum algorithm that (1+ o (1)) …

Computing replacement paths in the CONGEST model

V Manoharan, V Ramachandran - International Colloquium on Structural …, 2024‏ - Springer
We present several results on the round complexity of Replacement Paths and Second
Simple Shortest Path which are basic graph problems that can address fault tolerance in …

On sparsity awareness in distributed computations

K Censor-Hillel, D Leitersdorf… - Proceedings of the 33rd …, 2021‏ - dl.acm.org
We extract a core principle that underlies seemingly different fundamental distributed
settings, which is that sparsity awareness may induce faster algorithms for core problems in …

Distance computations in the hybrid network model via oracle simulations

K Censor-Hillel, D Leitersdorf, V Polosukhin - arxiv preprint arxiv …, 2020‏ - arxiv.org
The Hybrid network model was introduced in [Augustine et al., SODA'20] for laying down a
theoretical foundation for networks which combine two possible modes of communication …

On diameter approximation in directed graphs

A Abboud, M Dalirrooyfard, R Li… - arxiv preprint arxiv …, 2023‏ - arxiv.org
Computing the diameter of a graph, ie the largest distance, is a fundamental problem that is
central in fine-grained complexity. In undirected graphs, the Strong Exponential Time …

[PDF][PDF] Improved hardness of approximation of diameter in the CONGEST model

O Grossman, S Khoury, A Paz - 2020‏ - eprints.cs.univie.ac.at
We study the problem of approximating the diameter D of an unweighted and undirected n-
node graph in the congest model. Through a connection to extremal combinatorics, we show …

Improved approximation bounds for minimum weight cycle in the congest model

V Manoharan, V Ramachandran - arxiv preprint arxiv:2308.08670, 2023‏ - arxiv.org
Minimum Weight Cycle (MWC) is the problem of finding a simple cycle of minimum weight in
a graph $ G=(V, E) $. This is a fundamental graph problem with classical sequential …

Optimal Distributed Replacement Paths

YJ Chang, Y Chen, D Dey, G Mishra… - arxiv preprint arxiv …, 2025‏ - arxiv.org
We study the replacement paths problem in the $\mathsf {CONGEST} $ model of distributed
computing. Given an $ s $-$ t $ shortest path $ P $, the goal is to compute, for every edge …

Near optimal bounds for replacement paths and related problems in the congest model

V Manoharan, V Ramachandran - arxiv preprint arxiv:2205.14797, 2022‏ - arxiv.org
We present several results in the CONGEST model on round complexity for Replacement
Paths (RPaths), Minimum Weight Cycle (MWC), and All Nodes Shortest Cycles (ANSC). We …