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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mishra, V. Bhatnagar, S. Hemachandra, N. |
| Copyright Year | 2007 |
| Description | Author affiliation: Indian Inst. of Sci., Bangalore (Mishra, V.; Bhatnagar, S.) |
| Abstract | We propose certain discrete parameter variants of well known simulation optimization algorithms. Two of these algorithms are based on the smoothed functional (SF) technique while two others are based on the simultaneous perturbation stochastic approximation (SPSA) method. They differ from each other in the way perturbations are obtained and also the manner in which projections and parameter updates are performed. All our algorithms use two simulations and two- timescale stochastic approximation. As an application setting, we consider the important problem of admission control of packets in communication networks under dependent service times. We consider a discrete time slotted queueing model of the system and consider two different scenarios - one where the service times have a dependence on the system state and the other where they depend on the number of arrivals in a time slot. Under our settings, the simulated objective function appears ill-behaved with multiple local minima and a unique global minimum characterized by a sharp dip in the objective function in a small region of the parameter space. We compare the performance of our algorithms on these settings and observe that the two SF algorithms show the best results overall. In fact, in many cases studied, SF algorithms converge to the global minimum. |
| Starting Page | 2986 |
| Ending Page | 2991 |
| File Size | 213566 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424414970 |
| ISSN | 01912216 |
| DOI | 10.1109/CDC.2007.4434229 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-12-12 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Admission control Approximation algorithms Stochastic processes Computational modeling Communication networks Computer science Automation Convolution Gaussian distribution USA Councils |
| Content Type | Text |
| Resource Type | Article |
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