关键词: 云服务, 多agent系统, 时间边际效益

Abstract: In the dynamic environment of the Internet, cloud services present the characteristics of heterogeneous, large data and multitudinous. Using the Multi Agent System（MAS）with independent decision-making ability to solve the allocation and management of cloud services has gradually become a hot research topic in recent years. In order to track the decay trend of the overall utility with time, the cooperative strategy is further optimized. Based on the SaaS layer of the cloud service, a collaborative framework named QueTy is proposed. The framework introduces time marginal benefit for broker, provider and executor of cloud services, which lays the foundation for communication attenuation algorithm and selective broadcast algorithms. It is not only to achieve controlling service aging process, but also further to weigh the overall utility and communication loss.

Key words: cloud services, Multi Agent System（MAS）, time marginal utility