Title
Mixed Graph Colouring For Unit-Time Scheduling
Abstract
We consider the job shop scheduling problem with unit-time operations and the makespan criterion. This problem is reduced to finding an optimal colouring of a special class of mixed graph, where its partial graph without edges represents the union of maximal directed paths and its partial graph without arcs represents the union of maximal cliques. As the problem is known to be NP-hard, both exact and heuristic methods are proposed to solve it. This study is carried out in three steps. First, a new lower and upper bounds for the mixed chromatic number are proposed. Afterwards, a colour-indexed mathematical model using the proposed bounds is developed. Then, a tabu search using a dynamic neighbourhood structure is adapted for solving large instances. Computational experiments conducted on several modified benchmarks show the efficiency and effectiveness of the proposed resolution methods.
Year
DOI
Venue
2017
10.1080/00207543.2016.1224950
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
Keywords
DocType
Volume
mixed graph colouring, job shop scheduling, lower and upper bounds, mixed integer linear programming, tabu search
Journal
55
Issue
ISSN
Citations 
6
0020-7543
0
PageRank 
References 
Authors
0.34
14
4
Name
Order
Citations
PageRank
Ahmed Kouider100.34
Hacène Ait Haddadène200.34
Samia Ourari361.86
Ammar Oulamara4173.89