The stochastic single resource service‐provision problem

Shane Dye, Leen Stougie and Asgeir Tomasgard

Naval Research Logistics (NRL), 2003, vol. 50, issue 8, 869-887

Abstract: The service‐provision problem described in this paper comes from an application of distributed processing in telecommunications networks. The objective is to maximize a service provider's profit from offering computational‐based services to customers. The service provider has limited capacity and must choose which of a set of software applications he would like to offer. This can be done dynamically, taking into consideration that demand for the different services is uncertain. The problem is examined in the framework of stochastic integer programming. Approximations and complexity are examined for the case when demand is described by a discrete probability distribution. For the deterministic counterpart, a fully polynomial approximation scheme is known S. Dye, L. Stougie, and A. Tomasgard, Approximation algorithms and relaxations for a service provision problem on a telecommunication network, Working Paper #2‐98, Department of Industrial Economics and Technology Management, Norwegian University of Science and Technology, Trondheim, Norway, 1998, Discrete Appl Math, to appear. We show that introduction of stochasticity makes the problem strongly NP‐hard, implying that the existence of such a scheme for the stochastic problem is highly unlikely. For the general case a heuristic with a worst‐case performance ratio that increases in the number of scenarios is presented. Restricting the class of problem instances in a way that many reasonable practical problem instances satisfy allows for the derivation of a heuristic with a constant worst‐case performance ratio. Worst‐case performance analysis of approximation algorithms is classical in the field of combinatorial optimization, but in stochastic programming the authors are not aware of any previous results in this direction. © 2003 Wiley Periodicals, Inc. Naval Research Logistics, 2003

Date: 2003
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