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» On approximating the maximum diameter ratio of graphs
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AAIM
2007
Springer
127views Algorithms» more  AAIM 2007»
15 years 3 months ago
An Improved Approximation Algorithm for Maximum Edge 2-Coloring in Simple Graphs
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...
Zhi-Zhong Chen, Ruka Tanahashi
61
Voted
JDA
2008
88views more  JDA 2008»
14 years 9 months ago
Combinatorial 5/6-approximation of Max Cut in graphs of maximum degree 3
The best approximation algorithm for Max Cut in graphs of maximum degree 3 uses semidefinite programming, has approximation ratio 0.9326, and its running time is (n3.5 log n) ; bu...
Cristina Bazgan, Zsolt Tuza
AAIM
2010
Springer
219views Algorithms» more  AAIM 2010»
15 years 25 days ago
Approximating Maximum Edge 2-Coloring in Simple Graphs
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...
Zhi-Zhong Chen, Sayuri Konno, Yuki Matsushita
90
Voted
DAM
1999
169views more  DAM 1999»
14 years 9 months ago
Approximating the Weight of Shallow Steiner Trees
This paper deals with the problem of constructing Steiner trees of minimum weight with diameter bounded by d, spanning a given set of vertices in a graph. Exact solutions or logar...
Guy Kortsarz, David Peleg
97
Voted
ESA
2005
Springer
98views Algorithms» more  ESA 2005»
15 years 3 months ago
Improved Approximation Algorithms for Metric Max TSP
We present two polynomial-time approximation algorithms for the metric case of the maximum traveling salesman problem. One of them is for directed graphs and its approximation rat...
Zhi-Zhong Chen, Takayuki Nagoya