Context-sensitive QoS model: a rule-based approach to web service composition

Authors:
Tao Zhou;Xiaolin Zheng;William Wei Song;Xiaofeng Du;Deren Chen
Affiliations:
Zhejiang University, Hangzhou, China;Zhejiang University, Hangzhou, China;Durham University, Durham, United Kingdom;Durham University, Durham, United Kingdom;Zhejiang University, Hangzhou, China
Venue:
Proceedings of the 17th international conference on World Wide Web
Year:
2008

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Abstract

Generally, web services are provided with different QoS values, so they can be selected dynamically in service composition process. However, the conventional context free composition QoS model does not consider the changeability of QoS values and the context sensitive constraints during composition process. In this paper, we propose a rule based context sensitive QoS model to support the changeability of QoS values and the context sensitive constraints. By considering context in the QoS model, web service composition can be used widely and flexibly in the real world business.