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» Computing shortest paths with uncertainty
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TON
2008
125views more  TON 2008»
14 years 9 months ago
Two techniques for fast computation of constrained shortest paths
Abstract-- Computing constrained shortest paths is fundamental to some important network functions such as QoS routing, which is to find the cheapest path that satisfies certain co...
Shigang Chen, Meongchul Song, Sartaj Sahni
COMPGEOM
2005
ACM
14 years 11 months ago
Shortest path amidst disc obstacles is computable
An open question in Exact Geometric Computation is whether there are transcendental computations that can be made “geometrically exact”. Perhaps the simplest such problem in c...
Ee-Chien Chang, Sung Woo Choi, DoYong Kwon, Hyungj...
CCCG
2006
14 years 11 months ago
Shortest Descending Paths through Given Faces
A path from s to t on a polyhedral terrain is descending if the height of a point p never increases while we move p along the path from s to t. No efficient algorithm is known to ...
Mustaq Ahmed, Anna Lubiw
SIROCCO
2003
14 years 11 months ago
Polynomial-Time Computable Backup Tables for Shortest-Path Routing
For networks employing shortest-path routing, we introduce a new recovery scheme which needs only one backup routing table. By precomputing this backup table, the network recovers...
Hiro Ito, Kazuo Iwama, Yasuo Okabe, Takuya Yoshihi...
IFIP
2004
Springer
15 years 3 months ago
Efficient Protocols for Computing the Optimal Swap Edges of a Shortest Path Tree
We consider the problem of computing the optimal swap edges of a shortest-path tree. This theoretical problem arises in practice in systems that offer point-offailure shortest-path...
Paola Flocchini, Antonio Mesa Enriques, Linda Pagl...