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ENDM
2010
136views more  ENDM 2010»
13 years 6 months ago
Approximating the asymmetric profitable tour
Abstract We study the version of the asymmetric prize collecting traveling salesman problem, where the objective is to find a directed tour that visits a subset of vertices such th...
Viet Hung Nguyen, Thi Thu Thuy Nguyen
FCT
2007
Springer
13 years 10 months ago
Product Rules in Semidefinite Programming
Abstract. In recent years we have witnessed the proliferation of semidefinite programming bounds in combinatorial optimization [1,5,8], quantum computing [9,2,3,6,4,16] and even in...
Rajat Mittal, Mario Szegedy
COR
2006
98views more  COR 2006»
13 years 6 months ago
Exploiting semidefinite relaxations in constraint programming
Constraint programming uses enumeration and search tree pruning to solve combinatorial optimization problems. In order to speed up this solution process, we investigate the use of...
Willem Jan van Hoeve
NMA
2010
13 years 4 months ago
Metaheuristics for the Asymmetric Hamiltonian Path Problem
One of the most important applications of the Asymmetric Hamiltonian Path Problem is in scheduling. In this paper we describe a variant of this problem, and develop both a mathemat...
João Pedro Pedroso
MP
2006
113views more  MP 2006»
13 years 6 months ago
On the gap between the quadratic integer programming problem and its semidefinite relaxation
Consider the semidefinite relaxation (SDR) of the quadratic integer program (QIP): := maxx{-1,1}n xT Qx minD-Q 0 trace(D) =:
U. Malik, Imad M. Jaimoukha, G. D. Halikias, S. K....