QoS-aware Composite Service Selection in Grids

Authors:
Yang Qu;Chuang Lin;YuanZhuo Wang;Zhiguang Shan
Affiliations:
Tsinghua University, China;Tsinghua University, China;Tsinghua University, China;State Information Center, China
Venue:
GCC '06 Proceedings of the Fifth International Conference on Grid and Cooperative Computing
Year:
2006

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Abstract

Grid computing powered by Web service technology is creating abundant service-oriented applications which are promoting the sharing and collaboration of global resources. Complex tasks can be fulfilled quickly and efficiently by combining (physically distributed) individual services into a competent composite service. Since a lot of available individual services have the same functional properties while different non-functional properties (e.g. quality of service), decisions have to be made to select superior individual services from candidates for service composition. In this paper, the authors present a quality of service (QoS) model of service composition, as well as a composite service selection approach which can optimally choose the competent services, in the sense of satisfying users QoS requirement, for the demanded composite services with specified composite structures.