Publicación: Combining LR and 2-opt for scheduling a single machine subject to job ready times and sequence dependent setup times
Fecha
2014-01-01
Autores
Rojas-Santiago, M.
Muthuswamy, S.
Vélez-Gallego, M.C.
Montoya-Torres, J.R.
Título de la revista
ISSN de la revista
Título del volumen
Editor
Institute of Industrial Engineers
Resumen
In this research, the job ready times and sequence-dependent setup times of a single machine scheduling problem are considered with the objective of makespan minimization. As the problem is NP-hard, a Lagrangean Relaxation (LR) approach is proposed to find an initial solution and a heuristic based on 2-opt was implemented to improve it. Extensive computational experiments showed that the proposed combination of LR and 2-opt is effective. Wide range of test problems from 25 to 75 jobs was studied. The performance of the proposed approach was compared with the results from a commercial solver.