5 citations · 5 across the 3 of their papers we have counts for
3 papers
A Reinforcement-learning-based Column Generation Algorithm for Integrated Operating Room Planning and Scheduling
Mahdi Dolatkhah, Hossein Hashemi Doulabi, Walter Rei +1
In this paper, we propose a novel mixed integer programming model to formulate integrated operating room planning and scheduling problems, where several mandatory and elective surg…
Gröbner and Graver bases for calculating Opportunity Cost Matrices
Yuchen Ge, Janosch Ortmann, Walter Rei
Opportunity cost matrices are interesting in the context of scenario reduction. We provide new algorithms, based on ideas from algebraic geometry, to efficiently compute the opport…
Problem-Driven Scenario Clustering in Stochastic Optimization
Julien Keutchayan, Janosch Ortmann, Walter Rei
In stochastic optimisation, the large number of scenarios required to faithfully represent the underlying uncertainty is often a barrier to finding efficient numerical solutions. T…