Consumer-centric QoS-aware selection of web service

Wei-Li Lin, Chi-Chun Lo, Kuo-Ming Chao, Younas Muhammad

Research output: Contribution to journalArticle

34 Scopus citations


There exist many web services which exhibit similar functional characteristics. It is imperative to provide service consumers with facilities for selecting required web services according to their non-functional characteristics or quality of service (QoS). However, the selection process is greatly complicated by the distinct views of service providers and consumers on the services QoS. For instance, they may have distinct views of the service reliability-wherein a consumer considers that a service is reliable if its success rate is higher than 99%, while a provider may consider its service as reliable if its success rate is higher than 90%. The aim of this paper is to resolve such conflicts and to ensure consensus on the QoS characteristics in the selection of web services. It proposes a QoS Consensus Moderation Approach (QCMA) in order to perform QoS consensus and to alleviate the differences on QoS characteristics in the selection of web services. The proposed approach is implemented as a prototype tool and is tested on a case study of a hotel booking web service. Experimental results show that the proposed approach greatly improves the service selection process in a dynamic and uncertain environment of web services. (c) 2007 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)211-231
Number of pages22
JournalJournal of Computer and System Sciences
Issue number2
StatePublished - Mar 2008
Event20th International Conference on Advanced Information Networking and Applications - Vienna, Austria
Duration: 18 Apr 200620 Apr 2006


  • QoS consensus; web service; fuzzy logic; service selection

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