Solving multiple-objective flexible job shop problems by evolution and local search

NB Ho, JC Tay - IEEE Transactions on Systems, Man, and …, 2008 - ieeexplore.ieee.org
Finding realistic schedules for flexible job shop problems has attracted many researchers
recently due to its nondeterministic polynomial time (NP) hardness. In this paper, we present …

Optimal scheduling of a two-stage hybrid flow shop

M Haouari, L Hidri, A Gharbi - Mathematical Methods of Operations …, 2006 - Springer
We present an exact branch-and-bound algorithm for the two-stage hybrid flow shop
problem with multiple identical machines in each stage. The objective is to schedule a set of …

Tight bounds for the identical parallel machine scheduling problem

M Haouari, A Gharbi, M Jemmali - International Transactions in …, 2006 - Wiley Online Library
We address the problem of minimizing makespan on identical parallel machines. We
propose new lower bounding strategies and heuristics for this fundamental scheduling …

Algorithms to compute the energetic lower bounds of the cumulative scheduling problem

J Carlier, A Jouglet, A Sahli - Annals of Operations Research, 2024 - Springer
The aim of this paper is to propose efficient algorithms for computing the energetic lower
bounds of the cumulative sheduling problem. So we have to schedule in a minimal …

A faster checker of the energetic reasoning for the cumulative scheduling problem

J Carlier, A Sahli, A Jouglet… - International Journal of …, 2022 - Taylor & Francis
This paper constitutes a step forward in resource-constrained scheduling theory. We
introduce an O (n× α (n)× log⁡ n) checker for energetic reasoning (ER), where α (n) is …

An approximate decomposition algorithm for scheduling on parallel machines with heads and tails

A Gharbi, M Haouari - Computers & operations research, 2007 - Elsevier
We address the makespan minimization for parallel identical machines subject to heads and
tails. This problem is NP-hard in the strong sense. We show that the worst-case performance …

Energetic reasoning revisited: application to parallel machine scheduling

L Hidri, A Gharbi, M Haouari - Journal of scheduling, 2008 - Springer
We consider the problem of minimizing makespan on identical parallel machines subject to
release dates and delivery times. We present several new feasibility tests and adjustment …

Maximizing the minimum completion time on parallel machines

M Haouari, M Jemmali - 4OR, 2008 - Springer
We propose an exact branch-and-bound algorithm for the problem of maximizing the
minimum machine completion time on identical parallel machines. The proposed algorithm …

Climbing depth-bounded discrepancy search for solving hybrid flow shop problems

AB Hmida, MJ Huguet, P Lopez… - European Journal of …, 2007 - inderscienceonline.com
This paper investigates how to adapt some discrepancy-based search methods to solve
Hybrid Flow Shop (HFS) problems in which each stage consists of several identical …

[HTML][HTML] Fast lifting procedures for the bin packing problem

M Haouari, A Gharbi - Discrete Optimization, 2005 - Elsevier
In this paper, we investigate fast lower bounds for the deterministic one-dimensional bin
packing problem. We present two variants of a general lifting procedure which aims at …