Combining discrete and continuous information for multi-criteria optimization problems

Katrin Teichert (), Tobias Seidel and Philipp Süss
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Katrin Teichert: Fraunhofer Institute for Industrial Mathematics (ITWM)
Tobias Seidel: Fraunhofer Institute for Industrial Mathematics (ITWM)
Philipp Süss: Fraunhofer Institute for Industrial Mathematics (ITWM)

Mathematical Methods of Operations Research, 2024, vol. 100, issue 1, No 7, 153-173

Abstract: Abstract In multi-criteria optimization problems that originate from real-world decision making tasks, we often find the following structure: There is an underlying continuous, possibly even convex model for the multiple outcome measures depending on the design variables, but these outcomes are additionally assigned to discrete categories according to their desirability for the decision maker. Multi-criteria deliberations may then take place at the level of these discrete labels, while the calculation of a specific design remains a continuous problem. In this work, we analyze this type of problem and provide theoretical results about its solution set. We prove that the discrete decision problem can be tackled by solving scalarizations of the underlying continuous model. Based on our analysis we propose multiple algorithmic approaches that are specifically suited to handle these problems. We compare the algorithms based on a set of test problems. Furthermore, we apply our methods to a real-world radiotherapy planning example.

Keywords: Multi-criteria optimization; Decision making; Non-linear optimization; Pareto front approximation (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s00186-024-00849-0

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