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Supporting QoS based selection in service oriented architecture

Deora, Vikas, Shao, Jianhua, Gray, William Alexander and Fiddian, Nicholas John 2006. Supporting QoS based selection in service oriented architecture. Presented at: 2nd International Conference on Next-Generation Web Services Practices, Seoul, Korea, 25-28 September 2006. Published in: Abraham, Ajith and Han, Sang Yong eds. Proceedings of the International Conference on Next-Generation Web Services Practices. Los Alamitos, CA: IEEE Computer Society, pp. 117-126. 10.1109/NWESP.2006.29

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The ability to gauge quality of service is critical if we are to realise the potential of the service-oriented computing paradigm. Many techniques have been proposed for calculating the quality of a service, and they do so typically by collecting quality ratings from the users of the service, then combining them in one way or another to derive the quality of the service. We argue that combining quality ratings in such a way may lead to inaccurate quality measures for services. This is because different users often have different expectations on the quality of a service and their ratings tend to be closely related to these expectations, i.e. how their expectations are met. In this paper, we propose a quality of service assessment model that is able to capture the reason behind the ratings. This allows us to perform quality of service assessment in context, by using only the ratings that have similar expectations. We also introduce a confidence score that adjusts a rating of harsh or lenient rater. This is established by analyzing a user's past rating behavior for services. Our experiments show that the method we propose here can result in more meaningful and reliable selection of services.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Uncontrolled Keywords: QoS based selection ; quality of service assessment model ; service oriented architecture ; service-oriented computing
Publisher: IEEE Computer Society
ISBN: 9780769526645
Last Modified: 04 Jun 2017 04:49

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