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A QoS-aware Service Selection Method for Configuring Web Service Composition

웹 서비스 합성 구성을 위한 QoS고려 서비스 선택 기법

  • 윤경아 (숙명여자대학교 컴퓨터과학과) ;
  • 김윤희 (숙명여자대학교 컴퓨터과학부)
  • Received : 2012.01.25
  • Accepted : 2012.05.30
  • Published : 2012.08.31

Abstract

To fulfill the complex user requirement, composition web service comprised of existing services is considered from the efficient and reusable point of view instead of making entirely new web service. However, with the growing the number of web services which provide the same functionality but differ in quality value, the service composition becomes a decision problem on which component services should be selected such that end-to-end QoS constraints by the client and overall QoS of the composition service are satisfied. QoS of service aspects is a determinant factor for selecting the services, since the performance of the composed service is determined by the performance of the involved component web service. In this paper, hybrid genetic algorithm is presented to select component services to take part in the QoS-aware composition. The local search method is used to be combined with the genetic algorithm to improve the individuals (component service) in population as well as composed service. The paper also presents a set of experiments conducted to evaluate the efficiency of selection algorithm using the real web service data.

Acknowledgement

Supported by : 숙명여자대학교

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