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Global and local optimisation-based hybrid approach for cloud service composition
by Jyothi Shetty; Demian Antony D'Mello
International Journal of Computational Science and Engineering (IJCSE), Vol. 17, No. 1, 2018

 

Abstract: The goal of service composition is to find the best set of services, which meets the user requirements. The efficient local optimisation methods may fail to satisfy user's end-to-end requirements. Global optimisation methods are popular when the user's end-to-end requirements are to be satisfied. Optimal composition to end-to-end requirements consumes exponential time, in case of large search space. Metaheuristic methods are being used to solve this problem, which gives near optimal solution. The authors propose an approach in which both local and global optimisation are used. In order to avoid local optimums during local optimisation, the proposed work selects a set of best services from each task and then uses a global optimisation method on the smaller search space to select the best composition. In order to reduce the communication costs, optimal solution identifies the minimum number of clouds for composition.

Online publication date: Wed, 22-Aug-2018

 

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