3 papers
cs.DS2025
Improved Additive Approximation Algorithms for APSP
Ce Jin, Yael Kirkpatrick, Michał Stawarz +1
The All-Pairs Shortest Paths (APSP) is a foundational problem in theoretical computer science. Approximating APSP in undirected unweighted graphs has been studied for many years, b…
cs.DS2025
Shortest Paths in Multimode Graphs
Yael Kirkpatrick, Virginia Vassilevska Williams
In this work we study shortest path problems in multimode graphs, a generalization of the min-distance measure introduced by Abboud, Vassilevska W. and Wang in [SODA'16]. A multimo…
cs.DS2025
Beyond 2-approximation for k-Center in Graphs
Ce Jin, Yael Kirkpatrick, Virginia Vassilevska Williams +1
We consider the classical -Center problem in undirected graphs. The problem is known to have a polynomial-time 2-approximation. There are even -approximations r…