In this paper, we describe the methodology used to tackle France Telecom workforce scheduling problem (the subject of the Roadef Challenge 2007) and we report the results obtained on the different data sets provided for the competition. Since the problem at hand appears to be NP-hard and due to the high dimensions of the instance sets, we use a two-step heuristical approach. We first devise a problem-tailored heuristic that provides good feasible solutions and then we use a meta-heuristic scheme to improve the current results. The tailored heuristic makes use of sophisticated integer programming models and the corresponding sub-problems are solved using CPLEX while the meta-heuristic framework is a randomized local search algorithm. The approach herein described allowed us to rank 5th in this challenge.
Mots-clés : workforce scheduling, schedule generation scheme, roadef challenge
@article{RO_2009__43_4_375_0,
author = {Pokutta, Sebastian and Stauffer, Gautier},
title = {France {Telecom} workforce scheduling problem : a challenge},
journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
pages = {375--386},
publisher = {EDP-Sciences},
volume = {43},
number = {4},
year = {2009},
doi = {10.1051/ro/2009025},
zbl = {1173.90410},
language = {en},
url = {http://www.numdam.org/articles/10.1051/ro/2009025/}
}
TY - JOUR AU - Pokutta, Sebastian AU - Stauffer, Gautier TI - France Telecom workforce scheduling problem : a challenge JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2009 SP - 375 EP - 386 VL - 43 IS - 4 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro/2009025/ DO - 10.1051/ro/2009025 LA - en ID - RO_2009__43_4_375_0 ER -
%0 Journal Article %A Pokutta, Sebastian %A Stauffer, Gautier %T France Telecom workforce scheduling problem : a challenge %J RAIRO - Operations Research - Recherche Opérationnelle %D 2009 %P 375-386 %V 43 %N 4 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ro/2009025/ %R 10.1051/ro/2009025 %G en %F RO_2009__43_4_375_0
Pokutta, Sebastian; Stauffer, Gautier. France Telecom workforce scheduling problem : a challenge. RAIRO - Operations Research - Recherche Opérationnelle, Tome 43 (2009) no. 4, pp. 375-386. doi : 10.1051/ro/2009025. http://www.numdam.org/articles/10.1051/ro/2009025/
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