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A combinatorial optimization algorithm for multiple cloud service composition
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DOI：10.1016/j.compeleceng.2014.11.002.png)
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Abstract
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Service composition is an evolving approach that increases the number of applications of cloud computing by reusing existing services. However, the available methods focus on generating composite services from a single cloud, which limits the benefits that are derived from other clouds. This paper proposes a novel COMbinatorial optimization algorithm for cloud service COMposition (COM2) that can efficiently utilize multiple clouds. The proposed algorithm ensures that the cloud with the maximum number of services will always be selected before other clouds, which increases the possibility of fulfilling service requests with minimal overhead. The experimental results demonstrate that the COM2 successfully competes with previous multiple cloud service composition algorithms by examining a small number of services which directly relates to execution time without compromising the number of combined clouds. (C) 2014 Elsevier Ltd. All rights reserved.
Keywords:
Combinational optimization
Web services
Service composition
Cloud computing
Multiple clouds
Cross-clouds
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