NDLI: Selecting Skyline Web Services from Uncertain QoS

Content Provider	IEEE Xplore Digital Library
Author	Benouaret, K. Benslimane, D. Hadjali, A.
Copyright Year	2012
Abstract	Quality of service (QoS) has been considered as a significant criterion for selecting among functionally similar Web services. Recent approaches focus on computing the skyline over a set of QoS attributes. This can completely free users from assigning weights to QoS attributes. However, these approaches are not sufficient in a dynamic Web service environment where the delivered QoS by a Web service is inherently uncertain. In this paper, we tackle the problem of skyline on uncertain QoS. We represent each QoS attribute of a Web service using a possibility distribution and introduce two skyline extensions on uncertain QoS called pos-dominant skyline and nec-dominant skyline. We then develop appropriate algorithms to efficiently compute both the pos-dominant skyline and nec-dominant skyline. Finally, we present our experimental results that show both the effectiveness of the introduced skyline extensions and the efficiency of the proposed algorithms.
Starting Page	523
Ending Page	530
File Size	324583
Page Count	8
File Format	PDF
ISBN	9781467330497
DOI	10.1109/SCC.2012.84
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Web services Quality of service Possibility theory Time factors Uncertainty Educational institutions Software algorithms possibility theory Web Services skyline QoS
Content Type	Text
Resource Type	Article

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