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An Algorithm for the Graph Disconnection Problem
Myung Young-Soo,Kim Hyun-joon The Korean Operations Research and Management Scie 2005 Management Science and Financial Engineering Vol.11 No.1
We consider the graph disconnection problem, which is to find a set of edges such that the total cost of destroying the edges is no more than a given budget and the weight of nodes disconnected from a designated source by destroying the edges is maximized. The problem is known to be NP-hard. We present an integer programming formulation for the problem and develop an algorithm that includes a preprocessing procedure for reducing the problem size, a heuristic for providing a lower bound, and a cutting plane algorithm for obtaining an upper bound. Computational results for evaluating the performance of the proposed algorithm are also presented.