Drexl, Andreas; Kimms, Alf:
Lower and Upper Bounds for the Resource Investment Problem.
In: Selected papers of the Symposium on Operations Research : (SOR '99) ; Magdeburg, September 1 - 3, 1999 / Inderfurth, K.; Schwödiauer, G.; Domschke, W.; Juhnke, F.; Kleinschmidt, P.; Wäscher, G. (Hrsg.). - Berlin [u.a.]: Springer, 2000 - (Operations research proceedings ; 1999), S. 366 - 371
Buchaufsatz/Kapitel in Sammelwerk2000Wirtschaftswissenschaften
Mercator School of Management - Fakultät für Betriebswirtschaftslehre
Lower and Upper Bounds for the Resource Investment Problem.
Drexl, Andreas; Kimms, AlfLSF


The resource investment problem deals with the issue of providing resources to a project such that a given deadline can be met. The objective is to make the resources available in the cheapest possible way. For each resource, expenses depend on the maximum amount required during the course of the project. We develop two lower bounds for this NP-hard problem using Lagrangean relaxation and column generation techniques, respectively. Both procedures are capable of yielding feasible solutions as well. Hence, we also have two optimization guided heuristics. Details of what is presented here can be found in [3].