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Location-Aware Web Service Composition Based on the Mixture Rank of Web Services and Web Service Requests

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  • Junwen Lu
  • Guanfeng Liu
  • Keshou Wu
  • Wenjiang Qin

Abstract

Web service composition is widely used to extend the function of web services. Different users have different requirements of QoSs (Quality of Services) making them face many problems. The requirement of a special QoS may be a hard requirement or a soft requirement. The hard requirement refers to the QoS which must be satisfied to the user, and the soft one means that the requirement is flexible. This paper tries to solve the service composition problem when there are two kinds of requirements of QoSs. To satisfy various kinds of requirement of the QoS, we propose a composition method based on our proposed framework. We give an analysis from composition models of services and from related QoE (Quality of Experience) of web services. Then, we rank the service candidates and the service requests together. Based on the ranking, a heuristics is proposed for service selection and composition-GLLB (global largest number of service requests first, local best fit service candidate first), which uses “lost value” in the scheduling to denote the QoE. Comparisons are used to evaluate our method. Comparisons show that GLLB reduces the value of NUR (Number of Unfinished service Requests), FV (Failure Value), and AFV (Average Failure Value).

Suggested Citation

  • Junwen Lu & Guanfeng Liu & Keshou Wu & Wenjiang Qin, 2019. "Location-Aware Web Service Composition Based on the Mixture Rank of Web Services and Web Service Requests," Complexity, Hindawi, vol. 2019, pages 1-16, April.
    • Handle: RePEc:hin:complx:9871971
    DOI: 10.1155/2019/9871971
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    1. Shangguang Wang & Ching-Hsien Hsu & Zhongjun Liang & Qibo Sun & Fangchun Yang, 2014. "Multi-user web service selection based on multi-QoS prediction," Information Systems Frontiers, Springer, vol. 16(1), pages 143-152, March.
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