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Determining the Set of the Most Critical System Components—Optimization Approach

In: Advances in Operational Research in the Balkans

Author

Listed:
  • Petar Pavlović

    (Higher Medical and Business-Technological School of Applied Studies in Šabac)

  • Dragana Makajić-Nikolić

    (University of Belgrade)

  • Mirko Vujošević

    (University of Belgrade)

Abstract

The aim of this paper is to propose a new approach for determining the set of the most critical system components. Importance measuresImportance measures, commonly used for this purpose, first rank each individual component and afterward form a set of the most critical components due to their ranking. In this paper, we propose a new approach based on optimizationOptimization so the whole set of the most critical components could be determined simultaneously. By taking into account interdependence of components, sets of the most critical system components with different cardinalities does not have to share any of the components. The proposed approach uses optimizationOptimization over minimal cut setsMinimal cut sets of the observed system. The greater the number of minimal cut sets in which a component appears, the greater is its importance. The problem of determination of the minimal number of components which appear in all minimal cut setsMinimal Cut Sets (MCSs) is considered and formulated as set covering problemSet covering problem. The optimization problem is solved using available optimization software and original heuristic algorithmHeuristic algorithm. Experiments were performed on a group of benchmark fault trees, and the results are compared with the results obtained by commonly used importance measuresImportance measures.

Suggested Citation

  • Petar Pavlović & Dragana Makajić-Nikolić & Mirko Vujošević, 2020. "Determining the Set of the Most Critical System Components—Optimization Approach," Springer Proceedings in Business and Economics, in: Nenad Mladenović & Angelo Sifaleras & Marija Kuzmanović (ed.), Advances in Operational Research in the Balkans, pages 15-30, Springer.
    • Handle: RePEc:spr:prbchp:978-3-030-21990-1_2
    DOI: 10.1007/978-3-030-21990-1_2
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