Abstract
We present an approximation algorithm for the Max 3-section problem which divides a weighted graph into 3 parts of equal size so as to maximize the weight of the edges connecting different parts. The algorithm is based on a complex semidefinite programming and can in some sense be viewed as a generalization of the approximation algorithm proposed by Ye [17] for the Max Bisection problem. Our algorithm can hit the 2/3 bound and has approximate ratio 0.6733 for Max 3-section that sightly improves the 2/3 bound obtained by Andersson [1] and Gaur [8], respectively.
This work is supported by National Natural Science Foundations of China, No. 10671152.
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Ling, Af. (2009). Approximation Algorithms for Max 3-Section Using Complex Semidefinite Programming Relaxation. In: Du, DZ., Hu, X., Pardalos, P.M. (eds) Combinatorial Optimization and Applications. COCOA 2009. Lecture Notes in Computer Science, vol 5573. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02026-1_20
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DOI: https://doi.org/10.1007/978-3-642-02026-1_20
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