文摘
In this paper, a generalization of a recently proposed optimal path problem concerning decisions for improving connectivity is considered [see 6]. Each node in the given network is associated with a connection delay which can be reduced by implementing upgrading actions. For each upgrading action a cost must be paid, and the sum must satisfy a budget constraint. Given a fixed budget, the goal is to choose a set of upgrading actions such that the total delay of establishing paths among predefined node pairs is minimized. This model has applications in areas like multicast communication planning and wildlife reserve design.