| Article ID: | iaor19971361 |
| Country: | United Kingdom |
| Volume: | 47 |
| Issue: | 10 |
| Start Page Number: | 1247 |
| End Page Number: | 1261 |
| Publication Date: | Oct 1996 |
| Journal: | Journal of the Operational Research Society |
| Authors: | Guignard Monique, Lee Hochang |
A nonpreemptive single stage manufacturing process with parallel, unrelated machines and multiple job types with setups (PUMS) is considered. The authors propose a hybrid approximation procedure where a Lagrangean relaxation dual and a Lagrangean decomposition dual are solved one after the other to generate a good lower bound on the optimal makespan value. Computational results are reported.