3 papers
cs.DS2023
Improved Approximate Distance Oracles: Bypassing the Thorup-Zwick Bound in Dense Graphs
Davide Bilò, Shiri Chechik, Keerti Choudhary +3
Despite extensive research on distance oracles, there are still large gaps between the best constructions for spanners and distance oracles. Notably, there exist sparse spanners wi…
cs.DS2023
Compact Distance Oracles with Large Sensitivity and Low Stretch
Davide Bilò, Keerti Choudhary, Sarel Cohen +3
An -edge fault-tolerant distance sensitive oracle (-DSO) with stretch is a data structure that preprocesses an input graph . When queried with the triple $(s,t,F…
cs.DS2021
Fixed-Parameter Sensitivity Oracles
Davide Bilò, Katrin Casel, Keerti Choudhary +5
We combine ideas from distance sensitivity oracles (DSOs) and fixed-parameter tractability (FPT) to design sensitivity oracles for FPT graph problems. An oracle with sensitivity $f…