50 search results - page 1 / 10 » Improved Approximations for TSP with Simple Precedence Const... |
CIAC
2010
Springer
13 years 8 months ago
2010
Springer
In this paper, we consider variants of the traveling salesman problem with precedence constraints. We characterize hard input instances for Christofides' algorithm and Hoogeve...
IPCO
1998
13 years 6 months ago
1998
Abstract. A well studied and difficult class of scheduling problems concerns parallel machines and precedence constraints. In order to model more realistic situations, we consider ...
CORR
2008
Springer
13 years 5 months ago
2008
Springer
This paper presents improved approximation algorithms for the problem of multiprocessor scheduling under uncertainty (SUU), in which the execution of each job may fail probabilist...
IPCO
2007
13 years 6 months ago
2007
Abstract. We consider the single machine scheduling problem to minimize the average weighted completion time under precedence constrains. Improving on the various 2-approximation a...
TAMC
2009
Springer
13 years 9 months ago
2009
Springer
Given a universal constant k, the multiple Stack Travelling Salesman Problem (kSTSP in short) consists in finding a pickup tour T1 and a delivery tour T2 of n items on two distinc...