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A branch and bound algorithm for the two-machine flowshop problem with unit-time operations and time delays

Aziz Moukrim, Djamal Rebaine, Mehdi Serairi (2014)

RAIRO - Operations Research - Recherche Opérationnelle

In this paper we consider the problem of scheduling, on a two-machine flowshop, a set of unit-time operations subject to time delays with respect to the makespan. This problem is known to be $𝒩 P$ x1d4a9;x1d4ab; -hard in the strong sense. We propose an algorithm based on a branch and bound enumeration scheme. This algorithm includes the implementation of new lower and upper bound procedures, and dominance rules. A computer simulation to measure the performance of the algorithm is provided for a wide...

A class of nonmonotone stabilization methods in unconstrained optimization.

L. Grippo, F. Lampariello, S. Lucidi (1991)

Numerische Mathematik

A Comparison of Algorithms for the Maximum Clique Problem

Pierre Hansen, Nenad Mladenović (1992)

The Yugoslav Journal of Operations Research

A distributed search algorithm for global optimization on numerical spaces

Pierre Courrieu (1993)

RAIRO - Operations Research - Recherche Opérationnelle

A dual feasible forest algorithm for the linear assignment problem

M. Akgül, O. Ekin (1991)

RAIRO - Operations Research - Recherche Opérationnelle

A Hybrid Approach Combining Local Search and Constraint Programming for a Large Scale Energy Management Problem

Haris Gavranović, Mirsad Buljubašić (2013)

RAIRO - Operations Research - Recherche Opérationnelle

This paper presents a heuristic approach combining constraint satisfaction, local search and a constructive optimization algorithm for a large-scale energy management and maintenance scheduling problem. The methodology shows how to successfully combine and orchestrate different types of algorithms and to produce competitive results. We also propose an efficient way to scale the method for huge instances. A large part of the presented work was done to compete in the ROADEF/EURO Challenge 2010, organized...

A hybrid genetic algorithm for a dynamic logistics network with multi-commodities and components

Peng-Sheng You, Yi-Chih Hsieh, Hisn-Hung Chen (2011)

RAIRO - Operations Research

Various topics related to reverse logistics have been discussed over the years. Most of them have assumed that facilities are kept open once they are established, and no returned products or recovery parts are stocked in intermediate recycling stations. However, firms may have the right to repeatedly open or close their facilities according to their economic benefits if they can acquire their facilities by lease. It also turns out that intermediate recycling stations like collection centers...