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» A generator for hierarchical problems
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4OR
2008
79views more  4OR 2008»
15 years 6 months ago
MIP-based heuristic for non-standard 3D-packing problems
This paper is the continuation of a previous work (Fasano 2004), dedicated to a MIP formulation for non-standard three-dimensional packing issues, with additional conditions. The ...
Giorgio Fasano
COR
2010
177views more  COR 2010»
15 years 6 months ago
Hybridization of very large neighborhood search for ready-mixed concrete delivery problems
Companies in the concrete industry are facing the following scheduling problem on a daily basis: concrete produced at several plants has to be delivered at customers' constru...
Verena Schmid, Karl F. Doerner, Richard F. Hartl, ...
COR
2006
113views more  COR 2006»
15 years 6 months ago
Capacitated facility location problem with general setup cost
This paper presents an extension of the capacitated facility location problem (CFLP), in which the general setup cost functions and multiple facilities in one site are considered....
Ling-Yun Wu, Xiang-Sun Zhang, Ju-Liang Zhang
ECCC
2006
99views more  ECCC 2006»
15 years 6 months ago
On the Subgroup Distance Problem
We investigate the computational complexity of finding an element of a permutation group H Sn with a minimal distance to a given Sn, for different metrics on Sn. We assume that...
Christoph Buchheim, Peter J. Cameron, Taoyang Wu
165
Voted
COR
2007
80views more  COR 2007»
15 years 6 months ago
A MAX-MIN ant system for unconstrained multi-level lot-sizing problems
In this paper we present an ant-based algorithm for solving unconstrained multi-level lot-sizing problems called ant system for multi-level lot-sizing algorithm (ASMLLS). We apply...
Rapeepan Pitakaso, Christian Almeder, Karl F. Doer...