Sciweavers

Share
ANOR
2008

Pruning in column generation for service vehicle dispatching

9 years 10 months ago
Pruning in column generation for service vehicle dispatching
Abstract Column generation techniques have become a widely used technique to successfully solve large (integer) linear programs. One of the keys to obtaining a practically efficient algorithm is to have a fast method to limit the pricing of new columns to a small set. We study a large scale real-world vehicle dispatching problem with soft time windows which can be modeled as an integer linear program of set partitioning type. We develop a new pruning scheme based on matchings in order to speed up the branch-and-bound enumeration in the column generation process. Computational results on real-world data illustrate the effectiveness of the new pruning scheme.
Stephan Westphal, Sven Oliver Krumke
Added 08 Dec 2010
Updated 08 Dec 2010
Type Journal
Year 2008
Where ANOR
Authors Stephan Westphal, Sven Oliver Krumke
Comments (0)
books