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Evolution of service composition based on QoS under the cloud computing environment

In order to select efficiently cloud services to meet user service request in service composition evolution process under the cloud computing environment, the paper proposes an strategy of cloud service composition evolution based on hybrid particle swarm. First, we explore and describe evaluation standards and calculation expressions for the quality of cloud services under the cloud computing environment. Second, we transform the problem into a multi-objective programming problem of cloud service composition evolution. Finally we design a hybrid particle swarm algorithm to solve it. Our method can provide high quality and efficient services for requests under the cloud computing environment.