Service Selection for Composition with QoS Correlations

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Article number6914562
Pages (from-to)291-303
Journal / PublicationIEEE Transactions on Services Computing
Issue number2
Online published30 Sep 2014
Publication statusPublished - Mar 2016


QoS as an important criterion has attracted more and more attention in the service selection process. Various QoS-aware service selection methods have been proposed in recent years. However, few of them take into account of the QoS correlations between services, causing several performance issues. QoS correlations can be defined as that some QoS attributes of a service are not only dependent on the service itself but are also correlated to other services. Since such correlations will affect QoS values, it is important to study how to select appropriate candidate services while taking into account of QoS correlations when generating composite services with optimal QoS values. To this end, we propose a novel method of service selection, called the correlation-aware service pruning (CASP) method. It manages QoS correlations by accounting for all services that may be integrated into optimal composite services and prunes services that are not the optimal candidate services. Our experiments show that this method can manage complicated correlations between services and significantly improve the QoS values of the generated composite services.

Research Area(s)

  • Correlation-aware service pruning method, QoS, QoS correlation, service composition, service selection

Citation Format(s)

Service Selection for Composition with QoS Correlations. / Deng, Shuiguang; Wu, Hongyue; Hu, Daning; Zhao, J. Leon.

In: IEEE Transactions on Services Computing, Vol. 9, No. 2, 6914562, 03.2016, p. 291-303.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal