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» Hardness results for approximating the bandwidth
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RANDOM
2001
Springer
15 years 10 months ago
On Euclidean Embeddings and Bandwidth Minimization
We study Euclidean embeddings of Euclidean metrics and present the following four results: (1) an O(log3 n √ log log n) approximation for minimum bandwidth in conjunction with a ...
John Dunagan, Santosh Vempala
COCO
2011
Springer
261views Algorithms» more  COCO 2011»
14 years 5 months ago
Hardness of Max-2Lin and Max-3Lin over Integers, Reals, and Large Cyclic Groups
—In 1997, H˚astad showed NP-hardness of (1 − , 1/q + δ)-approximating Max-3Lin(Zq); however it was not until 2007 that Guruswami and Raghavendra were able to show NP-hardness...
Ryan O'Donnell, Yi Wu, Yuan Zhou
CORR
2012
Springer
218views Education» more  CORR 2012»
14 years 1 months ago
On the Hardness of Welfare Maximization in Combinatorial Auctions with Submodular Valuations
We present a new type of monotone submodular functions: multi-peak submodular functions. Roughly speaking, given a family of sets F, we construct a monotone submodular function f ...
Shahar Dobzinski, Jan Vondrák
FOCS
2002
IEEE
15 years 11 months ago
Covering Problems with Hard Capacities
We consider the classical vertex cover and set cover problems with the addition of hard capacity constraints. This means that a set (vertex) can only cover a limited number of its...
Julia Chuzhoy, Joseph Naor
SAGT
2009
Springer
136views Game Theory» more  SAGT 2009»
16 years 18 days ago
Doing Good with Spam Is Hard
We study economic means to improve network performance in the well-known game theoretic traffic model due to Wardrop. We introduce two sorts of spam flow - auxiliary and adversari...
Martin Hoefer, Lars Olbrich, Alexander Skopalik