A 1.598 approximation algorithm for the Steiner problem in graphs

被引:0
作者
Hougardy, S [1 ]
Prömel, HJ [1 ]
机构
[1] Humboldt Univ, Inst Informat, D-10099 Berlin, Germany
来源
PROCEEDINGS OF THE TENTH ANNUAL ACM-SIAM SYMPOSIUM ON DISCRETE ALGORITHMS | 1999年
关键词
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
We present a general iterative framework for improving the performance ratio of Steiner tree approximation algorithms. By applying this framework to one specific algorithm we obtain a new polynomial time approximation algorithm for the Steiner tree problem in graphs that achieves a performance ratio of 1.598 after II iterations. This beats the so far best known factor of 1.644 due to Karpinski and Zelikovsky [10]. With the help of a computer program we estimate the limit performance of our algorithm to be 1.588.
引用
收藏
页码:448 / 453
页数:6
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