Sciweavers

562 search results - page 7 / 113
» Approximation algorithms and hardness of the k-route cut pro...
Sort
View
SPDP
1991
IEEE
13 years 10 months ago
Optimal randomized algorithms for multipacket and cut through routing on the mesh
In this paper, we present a randomized algorithm for the multipacket (i.e., k − k) routing problem on an n × n mesh. The algorithm completes with high probability in at the mos...
Sanguthevar Rajasekaran, Mukund Raghavachari
RECOMB
2010
Springer
13 years 5 months ago
An Approximation Algorithm for Computing a Parsimonious First Speciation in the Gene Duplication Model
We consider the following problem: given a forest of gene family trees on a set of genomes, find a first speciation which splits these genomes into two subsets and minimizes the ...
Aïda Ouangraoua, Krister M. Swenson, Cedric C...
IPL
2010
115views more  IPL 2010»
13 years 5 months ago
Hardness and approximation of minimum distortion embeddings
We show that the problem of computing a minimum distortion embedding of a given graph into a path remains NP-hard when the input graph is restricted to a bipartite, cobipartite, o...
Pinar Heggernes, Daniel Meister
WG
2005
Springer
14 years 16 days ago
Approximation Algorithms for the Bi-criteria Weighted max-cut Problem
Abstract. We consider a generalization of the classical max-cut problem where two objective functions are simultaneously considered. We derive some theorems on the existence and th...
Eric Angel, Evripidis Bampis, Laurent Gourvè...
FOCS
2004
IEEE
13 years 10 months ago
Hardness of Approximating the Shortest Vector Problem in Lattices
Let p > 1 be any fixed real. We show that assuming NP RP, there is no polynomial time algorithm that approximates the Shortest Vector Problem (SVP) in p norm within a constant ...
Subhash Khot