关键词: 资源共享与冲突, 协同系数, QoS关联, 改进Skyline算法

Abstract: In service social network, cloud manufacturing service can share and compete in physical equipment, information and knowledge with other services involved in the same task, where collaboration effect is created and it has important influence on the real implementation QoS of both of them, resulting in QoS deviation phenomenon. In the actual manufacturing process, service QoS depends on the resource synergy effect formed by collaboration and conflict with the associated services. The existing service selection method is difficult to adapt to this situation. Therefore, according to the characteristics of service collaboration network, a manufacturing service selection method based on QoS collaboration association is proposed. Applying QoS collaboration association and synergy coefficient to describe the influence of resources sharing and conflict on on service QoS, a new service selection optimization model is naturally built. Through the concept of Skyline service pair, the search efficiency and result of Skyline algorithm are remarkable improved under the condition of QoS collaboration association. The simulation results show that the proposed model and algorithm are effective.