Researches on manufacturing cloud service composition & optimization approach supporting for service statistic correlation

In order to improve the quality of manufacturing cloud service composition, the influence of service statistic correlation on the QoS of cloud service composition was studied, then a cloud service composition & optimization approach supporting for service statistic correlation was proposed in this paper. Firstly, the statistic correlation between cloud services and their influence on QoS was analyzed, and then a cloud service statistic correlation model was built. Secondly, by introducing the index of statistic correlation degree into the QoS model of cloud service composition, the cloud service composition & optimization problem was solved by Particle Swarm Optimization (PSO) algorithm. Case study and analysis demonstrate that the proposed method is not only feasible and effectual, but also significant for promoting the development and application of cloud manufacturing.