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CP
2004
Springer
13 years 10 months ago
Quality of LP-Based Approximations for Highly Combinatorial Problems
We study the quality of LP-based approximation methods for pure combinatorial problems. We found that the quality of the LPrelaxation is a direct function of the underlying constra...
Lucian Leahu, Carla P. Gomes
ANOR
2004
116views more  ANOR 2004»
13 years 4 months ago
Approximations and Randomization to Boost CSP Techniques
Abstract. In recent years we have seen an increasing interest in combining constraint satisfaction problem (CSP) formulations and linear programming (LP) based techniques for solvi...
Carla P. Gomes, David B. Shmoys
IAT
2006
IEEE
13 years 10 months ago
An Approximate Algorithm for Resource Allocation Using Combinatorial Auctions
Combinatorial Auctions (CAs), where users bid on combination of items, have emerged as a useful tool for resource allocation in distributed systems. However, two main difficulties...
Viswanath Avasarala, Himanshu Polavarapu, Tracy Mu...
APPROX
2008
Springer
127views Algorithms» more  APPROX 2008»
13 years 6 months ago
Approximating Single Machine Scheduling with Scenarios
In the field of robust optimization, the goal is to provide solutions to combinatorial problems that hedge against variations of the numerical parameters. This constitutes an effor...
Monaldo Mastrolilli, Nikolaus Mutsanas, Ola Svenss...
CP
2003
Springer
13 years 10 months ago
Generating High Quality Schedules for a Spacecraft Memory Downlink Problem
This work introduces a combinatorial optimization problem called Mars Express Memory Dumping Problem (Mex-Mdp), which arises in the European Space Agency program Mars Express. It c...
Angelo Oddi, Nicola Policella, Amedeo Cesta, Gabri...