Approximating Maximum Edge 2-Coloring in Simple Graphs Via Local Improvement

  • Zhi-Zhong Chen
  • Ruka Tanahashi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5034)


We present a polynomial-time approximation algorithm for legally coloring as many edges of a given simple graph as possible using two colors. It achieves an approximation ratio of \(\frac{24}{29}=0.827586\ldots\). This improves on the previous best ratio of \(\frac{468}{575}=0.813913\ldots\).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Zhi-Zhong Chen
    • 1
  • Ruka Tanahashi
    • 1
  1. 1.Department of Mathematical SciencesTokyo Denki University, Hatoyama, SaitamaJapan

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