DocumentCode :
2111992
Title :
Event-driven dynamic service composition for networked new media service systems
Author :
Jiang Qi ; Xi Hong-sheng ; Yin Bao-qun
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China
fYear :
2010
fDate :
29-31 July 2010
Firstpage :
1121
Lastpage :
1125
Abstract :
An event-driven dynamic service composition strategy is presented for networked new media service systems to improve the resource utilization while simultaneously guarantee the QoS of multi-class services. First, an analytical model based on semi-Markov switching state-space control processes is introduced to formulate the dynamic service composition problem. Then, by utilizing the dynamic hierarchy of this model and the features of event-driven policy, an online optimization algorithm that combines potentials estimation and policy iteration is proposed. This algorithm doesn´t depend on any prior knowledge of system parameters and is with less computational cost. Simulation results demonstrate the effectiveness of the proposed algorithm.
Keywords :
multimedia communication; optimisation; quadtrees; quality of service; QoS; analytical model; dynamic hierarchy; dynamic service composition problem; event-driven dynamic service composition; multi-class services; networked new media service systems; online optimization algorithm; policy iteration; resource utilization; semiMarkov switching state-space control processes; Conferences; Electronic mail; Heuristic algorithms; Markov processes; Quality of service; Semantics; Web services; Dynamic Service Composition; Hierarchical Markov Control Processes; Optimization Algorithm; Policy Iteration; Service Overlay Networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference (CCC), 2010 29th Chinese
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6263-6
Type :
conf
Filename :
5573603
Link To Document :
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