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PSIVT
2007
Springer
143views Multimedia» more  PSIVT 2007»
16 years 19 days ago
Approximate ESPs on Surfaces of Polytopes Using a Rubberband Algorithm
Let p and q be two points on the surface of a polytope Π. This paper provides a rubberband algorithm for computing a Euclidean shortest path between p and q (a so-called surface E...
Fajie Li, Reinhard Klette, Xue Fu
ISCC
2005
IEEE
143views Communications» more  ISCC 2005»
16 years 3 days ago
Approximating Optimal Multicast Trees in Wireless Multihop Networks
— We study the problem of computing minimal cost multicast trees in multi-hop wireless mesh networks. This problem is known as the Steiner tree problem, and it has been widely st...
Pedro M. Ruiz, Antonio F. Gómez-Skarmeta
ICTCS
2005
Springer
16 years 22 hour ago
Weighted Coloring: Further Complexity and Approximability Results
Given a vertex-weighted graph G = (V, E; w), w(v) ≥ 0 for any v ∈ V , we consider a weighted version of the coloring problem which consists in finding a partition S = (S1, . ...
Bruno Escoffier, Jérôme Monnot, Vange...
ATAL
2008
Springer
15 years 8 months ago
Approximate bidding algorithms for a distributed combinatorial auction
Distributed allocation and multiagent coordination problems can be solved through combinatorial auctions (CAs). However, most of the existing winner determination algorithms (WDAs...
Benito Mendoza García, José M. Vidal
APPROX
2008
Springer
137views Algorithms» more  APPROX 2008»
15 years 8 months ago
Approximating Directed Weighted-Degree Constrained Networks
Given a graph H = (V, F) with edge weights {w(e) : e F}, the weighted degree of a node v in H is {w(vu) : vu F}. We give bicriteria approximation algorithms for problems that see...
Zeev Nutov