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Enumerate and Expand: New Runtime Bounds for Vertex Cover Variants

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Computing and Combinatorics (COCOON 2006)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 4112))

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Abstract

The enumerate-and-expand paradigm for solving NP-hard problems has been introduced and applied to some Vertex Cover variants in a recently published preliminary paper. In this paper we improve on the runtime for Connected Vertex Cover, obtaining a bound of O *(2.7606k), and use the technique in order to gain the fastest known method for counting the number of vertex covers in a graph, which takes O *(1.3803k) time.

Supported by the DFG under grant RO 927/6-1 (TAPI).

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References

  1. Balasubramanian, R., Fellows, M.R., Raman, V.: An improved fixed parameter algorithm for vertex cover. Information Processing Letters 65(3), 163–168 (1998)

    Article  MathSciNet  Google Scholar 

  2. Chandran, L.S., Grandoni, F.: Refined memorization for vertex cover. Information Processing Letters 93, 125–131 (2005)

    Article  MATH  MathSciNet  Google Scholar 

  3. Chen, J., Kanj, I.A., Jia, W.: Vertex cover: Further observations and further improvements. Journal of Algorithms 41, 280–301 (2001)

    Article  MATH  MathSciNet  Google Scholar 

  4. Chen, J., Kanj, I.A., Xia, G.: Simplicity is beauty: Improved upper bounds for vertex cover. Technical Report TR05-008, School of CTI, DePaul University (2005)

    Google Scholar 

  5. Dreyfus, S.E., Wagner, R.A.: The Steiner problem in graphs. Networks 1, 195–207 (1972)

    Article  MATH  MathSciNet  Google Scholar 

  6. Fernau, H.: On parameterized enumeration. In: H. Ibarra, O., Zhang, L. (eds.) COCOON 2002. LNCS, vol. 2387, pp. 564–573. Springer, Heidelberg (2002)

    Chapter  Google Scholar 

  7. Fernau, H.: Parameterized Algorithmics: A Graph-Theoretic Approach. Habilitation thesis, Universität Tübingen (2005)

    Google Scholar 

  8. Fernau, H., Manlove, D.F.: Vertex and edge covers with clustering properties: Complexity and algorithms. Technical Report TR-2006-210, Dept of Computing Science, University of Glasgow (April 2006)

    Google Scholar 

  9. Fomin, F.V., Grandoni, F., Kratsch, D.: Some new techniques in design and analysis of exact (exponential) algorithms. EATCS Bulletin 87, 47–77 (2005)

    MATH  MathSciNet  Google Scholar 

  10. Fomin, F.V., Høie, K.: Pathwidth of cubic graphs and exact algorithms. Technical Report 298, Department of Informatics, University of Bergen (May 2005)

    Google Scholar 

  11. Fuchs, B., Kern, W., Mölle, D., Richter, S., Rossmanith, P., Wang, X.: Dynamic programming for minimum steiner trees. Theory of Computing Systems (to appear, 2006)

    Google Scholar 

  12. Mölle, D., Richter, S., Rossmanith, P.: Enumerate and expand: Improved algorithms for connected vertex cover and tree cover. In: Proc. of 1st CSR (to appear, 2006)

    Google Scholar 

  13. Mölle, D., Richter, S., Rossmanith, P.: A faster algorithm for the Steiner tree problem. In: Durand, B., Thomas, W. (eds.) STACS 2006. LNCS, vol. 3884, pp. 561–570. Springer, Heidelberg (2006)

    Chapter  Google Scholar 

  14. Niedermeier, R.: Invitation to fixed-parameter algorithms. Habilitation thesis, Universität Tübingen (2002)

    Google Scholar 

  15. Niedermeier, R., Rossmanith, P.: Upper bounds for Vertex Cover further improved. In: Meinel, C., Tison, S. (eds.) STACS 1999. LNCS, vol. 1563, pp. 561–570. Springer, Heidelberg (1999)

    Chapter  Google Scholar 

  16. Niedermeier, R., Rossmanith, P.: On efficient fixed parameter algorithms for Weighted Vertex Cover. Journal of Algorithms 47, 63–77 (2003)

    MATH  MathSciNet  Google Scholar 

  17. Telle, J.A., Proskurowski, A.: Algorithms for vertex partitioning problems on partial k-trees. SIAM Journal on Discrete Mathematics 10(4), 529–550 (1997)

    Article  MATH  MathSciNet  Google Scholar 

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Mölle, D., Richter, S., Rossmanith, P. (2006). Enumerate and Expand: New Runtime Bounds for Vertex Cover Variants. In: Chen, D.Z., Lee, D.T. (eds) Computing and Combinatorics. COCOON 2006. Lecture Notes in Computer Science, vol 4112. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11809678_29

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  • DOI: https://doi.org/10.1007/11809678_29

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-36925-7

  • Online ISBN: 978-3-540-36926-4

  • eBook Packages: Computer ScienceComputer Science (R0)

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