How to Approximate Leximax-optimal Solutions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21730%2F21%3A00354101" target="_blank" >RIV/68407700:21730/21:00354101 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
How to Approximate Leximax-optimal Solutions
Original language description
Many real-world problems can be modelled as Multi-Objective Combinatorial Opti misation (MOCO) problems. In the multi-objective case, there is not a single optimum value but a set of optima known as Pareto-optima. However, the number of Pareto-optima can be too large to enumerate. Instead, one can compute a minimum Pareto-optimum according to an order. The leximax order selects a Pareto-optimum such that the objec tive functions with the worst values are penalised the least. Unlike other orders, such as the lexicographic order or the weighted sum order, the leximax order does not favour any objective function at the expense of others. Also, the leximax-optimum has a guaranteed small trade-off between the objective functions. In some real-world MOCO problems, the time to find a solution may be limited and computing a leximax-optimal solution may take too long. In such problems, we search for solutions that can be computed in the given admissible amount of time and that are as close to the leximax-optimum as possible. In other words, we approximate the leximax optimum. In this paper, we present and evaluate SAT-based algorithms and heuristics for ap proximating the leximax-optimum of Multi-Objective Boolean Satisfiability problems. The evaluation is performed in the context of the package upgradeability problem, on the set of benchmarks from the Mancoosi International Solver Competition, with combinations of up to five different objective functions.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
<a href="/en/project/LL1902" target="_blank" >LL1902: Powering SMT Solvers by Machine Learning</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Pragmatics of SAT a workshop of the 24nd International Conference on Theory and Applications of Satisfiability Testing
ISBN
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ISSN
1574-0617
e-ISSN
1574-0617
Number of pages
16
Pages from-to
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Publisher name
IOS Press
Place of publication
Amsterdam
Event location
Barcelona
Event date
Jul 5, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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