Article ID: | iaor19881237 |
Country: | United States |
Volume: | 18 |
Issue: | 1 |
Start Page Number: | 30 |
End Page Number: | 55 |
Publication Date: | Feb 1989 |
Journal: | SIAM Journal On Control and Optimization |
Authors: | Gallo Giorgio, Grigoriadis Michael D., Tarjan Robert E. |
Keywords: | combinatorial analysis, networks, programming: parametric |
The classical maximum flow problem sometimes occurs in settings in which the arc capacities are not fixed but are functions of a single parameter, and the goal is to find the value of the parameter such that the corresponding maximum flow or minimum cut satisfies some side condition, Finding the desired parameter value requires solving a sequence of related maximum flow problems. In this paper it is shown that the recent maximum flow algorithm of Goldberg and Tarjan can be extended to solve an important class of such parametric maximum flow problems, at the cost of only a constant factor in its worst-case time bound. Faster algorithms for a variety of combinatorial optimization problems follow from the result.