We consider a time-indexed formulation for the unrelated parallel machine scheduling problem. We show that all polyhedral knowledge known from the single machine problem (in particular, valid inequalities) is applicable to this formulation. We present new facet-inducing valid inequalities and a preprocessing technique involving fixing variables based on reduced costs. We combine both techniques in a basic cutting-plane algorithm and test the performance of the resulting algorithm by running it on randomly generated instances.
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DOI : 10.1051/ro/2020031
Keywords: Unrelated machine scheduling, time-indexed formulation, valid inequalities, cutting plane algorithm, variable fixing
@article{RO_2021__55_S1_S1747_0,
author = {Berghman, Lotte and Spieksma, Frits C. R. and T{\textquoteright}kindt, Vincent},
title = {Solving a time-indexed formulation for an unrelated parallel machine scheduling problem by preprocessing and cutting planes},
journal = {RAIRO. Operations Research},
pages = {S1747--S1765},
year = {2021},
publisher = {EDP-Sciences},
volume = {55},
doi = {10.1051/ro/2020031},
mrnumber = {4223119},
zbl = {1469.90076},
language = {en},
url = {https://www.numdam.org/articles/10.1051/ro/2020031/}
}
TY - JOUR AU - Berghman, Lotte AU - Spieksma, Frits C. R. AU - T’kindt, Vincent TI - Solving a time-indexed formulation for an unrelated parallel machine scheduling problem by preprocessing and cutting planes JO - RAIRO. Operations Research PY - 2021 SP - S1747 EP - S1765 VL - 55 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/ro/2020031/ DO - 10.1051/ro/2020031 LA - en ID - RO_2021__55_S1_S1747_0 ER -
%0 Journal Article %A Berghman, Lotte %A Spieksma, Frits C. R. %A T’kindt, Vincent %T Solving a time-indexed formulation for an unrelated parallel machine scheduling problem by preprocessing and cutting planes %J RAIRO. Operations Research %D 2021 %P S1747-S1765 %V 55 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/ro/2020031/ %R 10.1051/ro/2020031 %G en %F RO_2021__55_S1_S1747_0
Berghman, Lotte; Spieksma, Frits C. R.; T’kindt, Vincent. Solving a time-indexed formulation for an unrelated parallel machine scheduling problem by preprocessing and cutting planes. RAIRO. Operations Research, Tome 55 (2021), pp. S1747-S1765. doi: 10.1051/ro/2020031
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