Proceedings of the 18th International Conference on World Wide Web (WWW '09),
ACM Press, New York, NY, pp. 1123-1124 (2009)

Where to Adapt Dynamic Service Compositions 1

B. Jiang 2 , W.K. Chan 3 , Zhenyu Zhang 2 , and T.H. Tse 2

[author-izer free download from ACM digital library]


Peer services depend on one another to accomplish their tasks, and their structures may evolve. A service composition may be designed to replace its member services whenever the quality of the composite service fails to meet certain quality-of-service (QoS) requirements. Finding services and service invocation endpoints having the greatest impact on the quality are important to guide subsequent service adaptations. This paper proposes a technique that samples the QoS of composite services and continually analyzes them to identify artifacts for service adaptation. The preliminary results show that our technique has the potential to effectively find such artifacts in services.

Keywords: Service composition, service adaptation

1. This work is partially supported by GRF grants of the Research Grants Council of Hong Kong (project nos. 111107, 123207, and 717308).
2. Department of Computer Science, The University of Hong Kong, Pokfulam, Hong Kong.
3. Department of Computer Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong.


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