生态学视角下的集装箱海运网络适应度BA模型

发布时间：2018-04-01 16:37

本文选题：网络演化　切入点：适应度　出处：《运筹与管理》2014年06期

【摘要】：集装箱海运网络主要反映的是港口与航线的空间组织,其演化是一种复杂的社会、经济、历史的整合过程。运用生态学的隐喻方法对其演化的动力机制进行剖析,充分考虑到现实集装箱海运网络的规模限制与动态发展的演化特征,提出基于"优胜劣汰"的五种机制:节点增加、节点删除、择优连接、反择优删除与重新连接;通过设计港口腹地经济、港口吞吐量、港口区位等适应性指标对港口节点适应度进行度量,构建出一个适应度BA模型;对港口节点度分布的理论推导与数值模拟结果表明:(1)该模型的度分布不仅取决于港口节点的度,更依赖于港口节点的适应度。(2)该模型能够得到一个度分布服从幂律指数为γ=1+1/β的无标度网络。(3)若每个港口节点取相同适应度时,该模型呈现出"先到者赢"的特征;若每个港口节点适应度并不完全相同时,该模型呈现出"适者更富"的特征。
[Abstract]:Container shipping network mainly reflects the spatial organization of ports and routes, and its evolution is a complex process of social, economic and historical integration.By using the metaphorical method of ecology to analyze the dynamic mechanism of its evolution, taking into account the limitation of the scale of the real container shipping network and the evolution characteristics of its dynamic development, this paper puts forward five mechanisms based on "survival of the fittest": the increase of nodes.Node deletion, optimal connection, anti-optimal deletion and re-connection; through the design of port hinterland economy, port throughput, port location and other adaptive indicators to measure the port node fitness, build a fitness BA model;The theoretical derivation and numerical simulation of the degree distribution of the port nodes show that the degree distribution of the model depends not only on the degree of the port node, but also on the degree of the port node.The model can obtain a scale-free network with power law exponent 纬 1 1 / 尾. If each port node takes the same fitness, the model presents the feature of "first-come win".If the fitness of each port node is not exactly the same, the model presents the feature of "fitter is richer".
【作者单位】：大连海事大学交通运输管理学院;
【基金】：国家自然科学基金资助项目(71273037) 交通运输部软科学资助项目(2013-322-225-240) 中央高校基本科研业务费专项资金资助项目(3132013080,3132013336)
【分类号】：F552;F224

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