摘要
针对传统复杂网络理论通常以同质单层网络作为研究对象,忽视现有工业复杂网络具有多异质节点与多层网络互耦合性的问题,提出异质依存网络(Heterogeneous-interdependent network,HI net)理论及其关键节点辨识方法.以含多类型节点的异质依存网络作为研究对象,分析异质节点依存关系以及网络衰退机理.构建分块结构下异质节点依存矩阵,将多层异质依存网络归并于单层网络.提出节点效用耦合系数,描述不同故障类型下邻居节点效用耦合性.建立节点邻域效用耦合系数计算方法及其影响力传播方法,识别节点对网络状态的影响,实现关键节点识别.通过对典型的含多电源电网系统与电力信息物理异质依存网络进行仿真实验,分别验证了所提方法对不同故障类型下关键节点识别的有效性.
In order to solve the problem that traditional complex network theory usually takes homogeneous single-layer network as research object, and neglects mutual coupling relations among heterogeneous nodes or multi-layer networks in industrial complex networks, the heterogeneous-interdependent network(HI net) theory with key node identification method is proposed. Taking the HI net with multi types of nodes as the object,we study the dependency relations of nodes and the mechanism of network degeneration. Then, the dependency matrix of heterogeneous nodes is established to combine the multi-layer HI networks into one layer. To describe the effectiveness coupling for neighboring node under different fault mode, the effectiveness coupling coefficient is designed. Finally, the effectiveness coupling coefficient of neighborhood nodes and its propagation method are given to calculate the influence from node to networks to identify the key nodes in HI net. The effectiveness of the key nodes identification method is verified by the simulations of two typical HI nets, including the power system with multi generations and power-information HI net.
引文
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