17 search results - page 1 / 4 » Shortest Path Queries in Digraphs of Small Treewidth |
ICALP
1995
Springer
14 years 2 months ago
1995
Springer
We consider the problem of preprocessing an n-vertex digraph with real edge weights so that subsequent queries for the shortest path or distance between any two vertices can be efï...
FCT
1995
Springer
14 years 2 months ago
1995
Springer
Abstract. We present algorithms for maintaining shortest path information in dynamic outerplanar digraphs with sublogarithmic query time. By choosing appropriate parameters we achi...
ISAAC
2005
Springer
14 years 4 months ago
2005
Springer
In this paper we present space-query trade-offs for external memory data structures that answer shortest path queries on planar directed graphs. For any S = Ω(N1+ ) and S = O(N2...
NETWORKS
2002
13 years 10 months ago
2002
The conditional diameter D of a digraph G measures how far apart a pair of vertex sets V1 and V2 can be in such a way that the minimum out-degree and the minimum in-degree of the ...
STOC
2002
ACM
14 years 11 months ago
2002
ACM
We present improved algorithms for maintaining transitive closure and all-pairs shortest paths/distances in a digraph under deletion of edges. For the problem of transitive closur...