Iterative Refinement Approach for QoS-aware Service configuration
Ref: HURRAY-TR-061001 Publication Date: 11 to 13, Oct, 2006
Iterative Refinement Approach for QoS-aware Service configurationRef: HURRAY-TR-061001 Publication Date: 11 to 13, Oct, 2006
In heterogeneous environments, diversity of resources among the devices may affect their ability to perform services with specific QoS constraints, and drive peers to group themselves in a coalition for cooperative service execution. The dynamic selection of peers should be influenced by user's QoS requirements as well as local computation availability, tailoring provided service to user's specific needs. However, complex dynamic real-time scenarios may prevent the possibility of computing optimal service configurations before execution. An iterative refinement approach with the ability to trade off deliberation time for the quality of the solution is proposed. We state the importance of quickly finding a good initial solution and propose heuristic evaluation functions that optimise the rate at which the quality of the current solution improves as the algorithms have more time to run.
Notes: Also published in "From Model-Driven Design to Resource Management for Distributed Embedded Systems", B. Kleinjohann, L. Kleinjohann, R. Machado, C. Pereira, P. Thiagarajan (Eds.), IFIP Vol. 225, 2006, Springer, pp. 155-164.