2 citations · 3 across the 4 of their papers we have counts for
6 papers · 1 filter
Integrated patient-to-room and nurse-to-patient assignment in hospital wards
Tabea Brandt, Tom Lorenz Klein, Melanie Reuter-Oppermann +4
Assigning patients to rooms and nurses to patients are critical tasks within hospitals that directly affect patient and staff satisfaction, quality of care, and hospital efficiency…
Efficiently Constructing Convex Approximation Sets in Multiobjective Optimization Problems
Stephan Helfrich, Stefan Ruzika, Clemens Thielen
Convex approximation sets for multiobjective optimization problems are a well-studied relaxation of the common notion of approximation sets. Instead of approximating each image of…
Using Scalarizations for the Approximation of Multiobjective Optimization Problems: Towards a General Theory
Stephan Helfrich, Arne Herzel, Stefan Ruzika +1
We study the approximation of general multiobjective optimization problems with the help of scalarizations. Existing results state that multiobjective minimization problems can be…
Approximating Multiobjective Optimization Problems: How exact can you be?
Cristina Bazgan, Arne Herzel, Stefan Ruzika +2
It is well known that, under very weak assumptions, multiobjective optimization problems admit -approximation sets (also called -P…
Operational Research: Methods and Applications
Fotios Petropoulos, Gilbert Laporte, Emel Aktas +79
Throughout its history, Operational Research has evolved to include a variety of methods, models and algorithms that have been applied to a diverse and wide range of contexts. This…
Approximating Biobjective Minimization Problems Using General Ordering Cones
Arne Herzel, Stephan Helfrich, Stefan Ruzika +1
This article investigates the approximation quality achievable for biobjective minimization problems with respect to the Pareto cone by solutions that are (approximately) optimal w…