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APPROX
2010
Springer
193views Algorithms» more  APPROX 2010»
13 years 6 months ago
Approximation Algorithms for the Directed k-Tour and k-Stroll Problems
We consider two natural generalizations of the Asymmetric Traveling Salesman problem: the k-Stroll and the k-Tour problems. The input to the k-Stroll problem is a directed n-verte...
MohammadHossein Bateni, Julia Chuzhoy
ENDM
2010
136views more  ENDM 2010»
13 years 4 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
CAAN
2006
Springer
13 years 8 months ago
Tolerance Based Contract-or-Patch Heuristic for the Asymmetric TSP
In this paper we improve the quality of a recently suggested class of construction heuristics for the Asymmetric Traveling Salesman Problem (ATSP), namely the Contract-or-Patch heu...
Boris Goldengorin, Gerold Jäger, Paul Molitor
DISOPT
2006
101views more  DISOPT 2006»
13 years 4 months ago
Greedy-type resistance of combinatorial problems
This paper gives a sufficient condition for a combinatorial problem to be greedy-type-resistant, i.e. such that, on some instances of the problem, any greedy-type algorithm will o...
Gareth Bendall, François Margot
ALGORITHMICA
2005
149views more  ALGORITHMICA 2005»
13 years 4 months ago
Approximating Maximum Weight Cycle Covers in Directed Graphs with Weights Zero and One
A cycle cover of a graph is a spanning subgraph each node of which is part of exactly one simple cycle. A k-cycle cover is a cycle cover where each cycle has length at least k. Gi...
Markus Bläser, Bodo Manthey