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11th International Conference on Computer and Knowledge Engineering
Virtual Network Embedding based on Univariate Distribution Estimation
Authors :
Arezoo Jahani
1
1- Assistant Professor
Keywords :
Virtual network embedding, Substrate provisioning, incremental learning, univariate EDA, Distribution estimation.
Abstract :
Network virtualization has been extensively used in the next generation of internet architecture. Substrate provisioning is a challenging problem in Virtual Network Embedding (VNE) which provides the infrastructure of various virtual elements on a similar substrate/physical infrastructure. Previous works usually complete two phases of node mapping and link mapping to embed Virtual Networks (VN) and try to check all possible scenarios in virtual network embedding. This paper uses the estimation of distribution algorithm (EDA) to embed virtual networks on the shared Substrate Network (SN). Discrete EDAs can be divided into three groups: univariate, bivariate, and multivariate. Since in the simplest case there is no relation between the selected substrate nodes, we have chosen the univariate EDA. In the coding method, we examined the mapping of nodes and links together, so we can easily use a univariate EDA. By removing the link mapping from coding, the multivariate EDA should be used. EDA has incremental learning ability which makes it able to learn the distribution of the best embedding solutions with high revenue and less cost to generate the best answers in the next generations. The proposed method completes two phases of node mapping and link mapping concurrently. The evaluation results show the effectiveness of the proposed method in convergence and high acceptance ratio and high revenue in the VNE process in the comparison with Presto and ACO-VNE.
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