Analysis of Preflow Push Algorithms for Maximum Network Flow
Analysis of Preflow Push Algorithms for Maximum Network Flow
复制标题
最大网络流量的Preflow Push算法分析
DOI:
--
复制
发表时间:
1988
期刊:
影响因子:
--
通讯作者:
S. Maheshwari
中科院分区:
文献类型:
--
作者:
J. Cheriyan;S. Maheshwari
We study the class of preflow push algorithms recently introduced by Goldberg and Tarjan for solving the maximum network flow problem on a weighted digraph G(V,E). We improve Goldberg and Tarjanis O(n3) time bound for the maximum distance preflow push algorithm to O(n2√m) and show that this bound is tight by constructing a parametrized worst case network. We then develop the maximal excess preflow push algorithm and show that it achieves a bound of O(n2√m) pushes. Based on this we develop a maximum network flow algorithm for the synchronous distributed model of computation that uses at most O(n2√m) messages and O(n2) time, thereby improving upon the best previously known algorithms for this model.