Budgeted uncertainty sets have been established as a major influence on uncertainty modeling for robust optimization problems. A drawback of such sets is that the budget constraint only restricts the global amount of cost increase that can be distributed by an adversary. Local restrictions, while being important for many applications, cannot be modeled this way.
We introduce a new variant of budgeted uncertainty sets, called locally budgeted uncertainty. In this setting, the uncertain parameters are partitioned, such that a classic budgeted uncertainty set applies to each part of the partition, called region.
In a theoretical analysis, we show that the robust counterpart of such problems for a constant number of regions remains solvable in polynomial time, if the underlying nominal problem can be solved in polynomial time as well. If the number of regions is unbounded, we show that the robust selection problem remains solvable in polynomial time, while also providing hardness results for other combinatorial problems.
In computational experiments using both random and real-world data, we show that using locally budgeted uncertainty sets can have considerable advantages over classic budgeted uncertainty sets.
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@article{OJMO_2021__2__A3_0, author = {Marc Goerigk and Stefan Lendl}, title = {Robust {Combinatorial} {Optimization} with {Locally} {Budgeted} {Uncertainty}}, journal = {Open Journal of Mathematical Optimization}, eid = {3}, pages = {1--18}, publisher = {Universit\'e de Montpellier}, volume = {2}, year = {2021}, doi = {10.5802/ojmo.5}, language = {en}, url = {https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.5/} }
TY - JOUR AU - Marc Goerigk AU - Stefan Lendl TI - Robust Combinatorial Optimization with Locally Budgeted Uncertainty JO - Open Journal of Mathematical Optimization PY - 2021 SP - 1 EP - 18 VL - 2 PB - Université de Montpellier UR - https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.5/ DO - 10.5802/ojmo.5 LA - en ID - OJMO_2021__2__A3_0 ER -
%0 Journal Article %A Marc Goerigk %A Stefan Lendl %T Robust Combinatorial Optimization with Locally Budgeted Uncertainty %J Open Journal of Mathematical Optimization %D 2021 %P 1-18 %V 2 %I Université de Montpellier %U https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.5/ %R 10.5802/ojmo.5 %G en %F OJMO_2021__2__A3_0
Marc Goerigk; Stefan Lendl. Robust Combinatorial Optimization with Locally Budgeted Uncertainty. Open Journal of Mathematical Optimization, Volume 2 (2021), article no. 3, 18 p. doi : 10.5802/ojmo.5. https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.5/
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