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The maximum independent union of cliques problem: complexity and exact approaches

Author

Listed:
  • Zeynep Ertem

    (The University of Texas at Austin)

  • Eugene Lykhovyd

    (Texas A&M University)

  • Yiming Wang

    (Texas A&M University)

  • Sergiy Butenko

    (Texas A&M University)

Abstract

Given a simple graph, the maximum independent union of cliques problem is to find a maximum-cardinality subset of vertices such that each connected component of the corresponding induced subgraph is a complete graph. This recently introduced problem allows both cliques and independent sets as feasible solutions and is of significant theoretical and applied interest. This paper establishes the complexity of the problem on several classes of graphs (planar, claw-free, and bipartite graphs), and develops an integer programming formulation and an exact combinatorial branch-and-bound algorithm for solving it. Results of numerical experiments with numerous benchmark instances are also reported.

Suggested Citation

  • Zeynep Ertem & Eugene Lykhovyd & Yiming Wang & Sergiy Butenko, 2020. "The maximum independent union of cliques problem: complexity and exact approaches," Journal of Global Optimization, Springer, vol. 76(3), pages 545-562, March.
    • Handle: RePEc:spr:jglopt:v:76:y:2020:i:3:d:10.1007_s10898-018-0694-2
    DOI: 10.1007/s10898-018-0694-2
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    References listed on IDEAS

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    1. Svyatoslav Trukhanov & Chitra Balasubramaniam & Balabhaskar Balasundaram & Sergiy Butenko, 2013. "Algorithms for detecting optimal hereditary structures in graphs, with application to clique relaxations," Computational Optimization and Applications, Springer, vol. 56(1), pages 113-130, September.
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    3. Egon Balas & Vašek Chvátal & Jaroslav Nešetřil, 1987. "On the Maximum Weight Clique Problem," Mathematics of Operations Research, INFORMS, vol. 12(3), pages 522-535, August.
    4. Buchanan, Austin & Sung, Je Sang & Boginski, Vladimir & Butenko, Sergiy, 2014. "On connected dominating sets of restricted diameter," European Journal of Operational Research, Elsevier, vol. 236(2), pages 410-418.
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