Consumer-centric QoS-aware selection of web services

W-L Lin, C-C. Lo, Kuo-Ming Chao, M. Younas

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)211-231
JournalJournal of Computer and System Sciences
Volume74
Issue number2
DOIs
Publication statusPublished - Mar 2008

Bibliographical note

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Keywords

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

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