An On-Demand Service Composition Method Based on Trustworthy Quality of Service
Liu Jian-xun · Xi'an Jiaotong Daxue xuebao · 2013
An on-demand service composition method based on reliable service quality is proposed to solve the service credible composition problem in open and dynamic network environment,especially the calculation and evaluation of the composite service credibility,and the optimal selection for credible service composition.The method bases on the trust value of a single service instance and the control structure of service composition diagram to build a service composition trust model based on credible quality of service,and to perform the calculation and synthesization of composition service credibility.Then,the model is used to design on-demand service composition plan with credible QoS under multiple constraints,and the particle swarm algorithm,is used to solve the optimization problem to obtain the service execution plan with the highest credibility.Experiments with an example of distribution management requirement of logistics domain show that the proposed method is effective and applicable to solve the constrained credible service composition optimization problem and can enhance the credibility and success rate of service composition.