Department of Economics and Business Economics

Extending single tolerances to set tolerances

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The theory of single upper and lower tolerances for combinatorial minimization problems was formalized in 2005 for the three types of cost functions sum, product, and maximum, and since then it has shown to be rather useful in creating heuristics and exact algorithms. However, such single tolerances are often used because the assessment of multiple cost changes is considered too complicated. This paper addresses that issue. In this paper we extend this theory from single to set tolerances for these three types of cost functions. In particular, we characterize specific values of set upper and lower tolerances as positive and infinite, and we show a criterion for the uniqueness of an optimal solution to a combinatorial minimization problem. Furthermore, we present one exact formula and several bounds for computing set upper and lower tolerances using the relation to their corresponding single tolerance counterparts.

Original languageEnglish
JournalDiscrete Applied Mathematics
Volume247
Pages (from-to)197-215
Number of pages19
ISSN0166-218X
DOIs
Publication statusPublished - 12 Jul 2018

    Research areas

  • ALGORITHMS, ARC TOLERANCES, ASSIGNMENT, COMBINATORIAL OPTIMIZATION, Combinatorial optimization, NETWORK FLOW PROBLEMS, SENSITIVITY-ANALYSIS, SHORTEST-PATH, SPANNING-TREES, Sensitivity analysis, Set tolerance, Single tolerance, TRAVELING SALESMAN PROBLEM, TSP

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