58 search results - page 2 / 12 » Distance Oracles for Sparse Graphs |
FOCS
2010
IEEE
13 years 2 months ago
2010
IEEE
We give the first improvement to the space/approximation trade-off of distance oracles since the seminal result of Thorup and Zwick [STOC'01]. For unweighted graphs, our dista...
FOCS
2009
IEEE
13 years 11 months ago
2009
IEEE
—We introduce a new tool for approximation and testing algorithms called partitioning oracles. We develop methods for constructing them for any class of bounded-degree graphs wit...
WSDM
2010
ACM
14 years 2 months ago
2010
ACM
We study the fundamental problem of computing distances between nodes in large graphs such as the web graph and social networks. Our objective is to be able to answer distance que...
ISAAC
2004
Springer
13 years 10 months ago
2004
Springer
Let G be a graph containing N disjoint t-spanners that are inter-connected with M edges. We present an algorithm that constructs a data structure of size O(M2 + n log n) that answ...
STOC
2001
ACM
14 years 5 months ago
2001
ACM
Let G = (V, E) be an undirected weighted graph with |V | = n and |E| = m. Let k 1 be an integer. We show that G = (V, E) can be preprocessed in O(kmn1/k ) expected time, construc...