A Method of QoS-Aware Service Components Composition
Yuan Liao · Chinese Journal of Computers · 2005
How to composite a service from its components is a very active area of research on service oriented architecture.This paper proposes a method of QoS aware service components composition, which has applied into Liquid—A component based embedded OS. In this method, not only functional requirements but also QoS constraints of composite service can be satisfied. In this approach, service is models as composite components that have QoS characteristics. And based on the service model and QoS model, a basic algorithm of component selection is given. In order to make this service composition method suit dynamic system, heuristic and negotiation approach are used to improve the basic selection algorithm performance. At last, for the purpose of verification and comparison of those three different algorithms, the results of an experiment are presented.