Routing in scale-free networks based on expanding betweenness centrality

Routing in scale-free networks based on expanding betweenness centrality
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基于扩展介数中心性的无标度网络中的路由

DOI:
10.1016/j.physa.2010.10.002
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发表时间:
2011-03
期刊:
Physica A: Statistical Mechanics and its Applications
影响因子:
--
通讯作者:
Qian, Tong-Hui
Qian, Tong-Hui
中科院分区:
其他
文献类型:
--
作者:
Guan, Zhi-Hong;Chen, Long;Qian, Tong-Hui

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为了提高无标度网络的业务容量,提出了一种改进的路由策略。该算法不再利用度和介数中心度的信息,而是基于节点的介数中心度扩展,对某一路由集合的顶点所处理的流量进行估计。由于居间中心度较大的节点更容易发生流量拥塞,因此在计算集合路由表的过程中,可以通过将流量负载从居间中心度较大的节点重新分配到居间中心度较小的节点来改善流量。结果表明,与以往的路由策略相比,改进后的路由算法具有更好的性能。
In this paper, an improved routing strategy is proposed for enhancing the traffic capacity of scale-free networks. Instead of using the information of degree and betweenness centrality, the new algorithm is derived on the basis of the expanding betweenness centrality of nodes, which gives an estimate of the traffic handled by the vertex for a certain route set. Since the nodes with large betweenness centrality are more susceptible to traffic congestion, the traffic can be improved by redistributing traffic loads from nodes with large betweenness centrality to nodes with small betweenness centrality in the process of computing the collective routing table. Comparing with results of previous routing strategies, it is shown that the present improved routing performs more effectively.
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