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» Approximation of the Quadratic Set Covering problem
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SODA
2010
ACM
164views Algorithms» more  SODA 2010»
15 years 7 months ago
Differentially Private Approximation Algorithms
Consider the following problem: given a metric space, some of whose points are "clients," select a set of at most k facility locations to minimize the average distance f...
Anupam Gupta, Katrina Ligett, Frank McSherry, Aaro...
COCOON
1999
Springer
15 years 1 months ago
Multi-coloring Trees
Scheduling jobs with pairwise conflicts is modeled by the graph multicoloring problem. It occurs in two versions: in the preemptive case, each vertex may get any set of colors, w...
Magnús M. Halldórsson, Guy Kortsarz,...
APPROX
2004
Springer
136views Algorithms» more  APPROX 2004»
15 years 3 months ago
On the Crossing Spanning Tree Problem
Given an undirected n-node graph and a set C of m cuts, the minimum crossing tree is a spanning tree which minimizes the maximum crossing of any cut in C, where the crossing of a c...
Vittorio Bilò, Vineet Goyal, R. Ravi, Mohit...
ISAAC
2004
Springer
137views Algorithms» more  ISAAC 2004»
15 years 3 months ago
The Polymatroid Steiner Problems
The Steiner tree problem asks for a minimum cost tree spanning a given set of terminals S ⊆ V in a weighted graph G = (V, E, c), c : E → R+ . In this paper we consider a genera...
Gruia Calinescu, Alexander Zelikovsky
73
Voted
FOCS
1993
IEEE
15 years 1 months ago
On Bounded Queries and Approximation
This paper investigates the computational complexity of approximating several NPoptimization problems using the number of queries to an NP oracle as a complexity measure. The resu...
Richard Chang, William I. Gasarch