2MICHAEL A, FOX A, GRIFFITH R, et al. Above the clouds aberkley view of cloud computing[J]. UC Berkley, USA: Technical Report No. UCB/EEECS-2009-28,2009 : 1-25.
3QIU YONG GANG, FREI H P. Concept based query expansion [C]. Proceedings of the 16th ACM SIGIR Conference on Research and Development in Information Retrieval, Pittsburgh, PA, USA, 1993:160-169.
9BELOGLZOV A,BUYYA R. Adaptive threshold-based approach for energy-efficient consolidation of virtual machines in cloud data centers[C]. Proceedings of the 8th International Workshop on Middleware for Grids, Clouds and e-Science, New York, USA, 2010.
