| ¡¡ | Chinese Journal of Computers Full Text |
| Title | A Method of QoS-Aware Service Components Composition |
| Authors | LIAO Yuan1£©,2£©,3£© TANG Lei1£©,2£© LI Ming-Shu1£©,3£© |
| Address | 1£©£¨Laboratory for Internet Software Technologies, Institute of Software, Chinese Academy of Sciences, Beijing 100080£© 2£©£¨Graduate School of the Chinese Academy of Sciences, Beijing 100080£© |
| Year | 2005 |
| Issue | No.4(627¡ª634) |
| Abstract & Background | 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¡ªA 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. keywords service; component; quality of service; composition |