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A Method for Optimizing Top-k Composite Services towards Preference-Aware Service Dominance

Author

Listed:
  • Shaoqian Zhang

    (Nanjing University, Nanjing, China)

  • Wenmin Lin

    (Nanjing University, Nanjing, China)

  • Wanchun Dou

    (Nanjing University, Nanjing, China)

  • Jinjun Chen

    (University of Technology, Sydney, Sydney, NSW, Australia)

Abstract

Web service composition allows users to create value-added composite Web services on existent services, where top-k composite services are helpful for users to find a satisfying composite service efficiently. However, with an increasing number of Web services and users' various composition preferences, computing top-k composite services dynamically for different users is difficult. In view of this challenge, an optimization method for top-k composite services is proposed, based on a preference-aware service dominance relationship. Concretely speaking, firstly, user preferences are modeled with the preference-aware service dominance. Then, in local service selection, a multi-index based algorithm is proposed, named Multi-Index, for computing candidate services of each task dynamically. After that, in global optimization, combined with a service lattice, top-k composite services are selected under a dominant number-aware service ranking. A case study is also presented for illustrating the authors’ solution. At last, an experiment was conducted to verify the proposed method.

Suggested Citation

  • Shaoqian Zhang & Wenmin Lin & Wanchun Dou & Jinjun Chen, 2013. "A Method for Optimizing Top-k Composite Services towards Preference-Aware Service Dominance," International Journal of Web Services Research (IJWSR), IGI Global, vol. 10(2), pages 63-86, April.
    • Handle: RePEc:igg:jwsr00:v:10:y:2013:i:2:p:63-86
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