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Alternative pair in the airport network

机译：机场网络中的替代对

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This paper reveals the existence of "alternative pair" in the airport network. The alternative pair is defined as a pair of airports that, if one of them is closed, the other one can take over part of its traffic load. We find these pairs of airports important as the network performance will not be affected largely if only one airport is disrupted, while simultaneous closure of both airports in an alternative pair will worsen the network performance significantly, as no other airports can accommodate their load. A method is provided to identify the alternative pairs in an airport network and quantify the "alternative strength" between them. The alternative relations between different airport pairs are visualized using the "alternative graph". By setting different thresholds of alternative strength, the alternative graph exhibits various patterns. The proposed method is applied to two domestic airport networks to obtain some managerial insights. It is found that airport networks are usually robust to the disruption of a single airport, but vulnerable to the simultaneous disruption of an alternative pair; furthermore, the two airports in an alternative pair may not be geographically close to each other in some airport networks.
机译：本文揭示了机场网络中“替代对”的存在。替代对被定义为一对机场，如果其中一个是关闭的，则另一个可以接管其交通负荷的一部分。我们发现这些成对的机场，随着网络性能不会受到影响，如果只有一个机场被扰乱，而在另一种机场的同时关闭两个机场将显着扭转网络性能，因为没有其他机场可以容纳他们的负荷。提供了一种方法来识别机场网络中的替代对，并量化它们之间的“替代强度”。使用“替代图”可视化不同机场对之间的替代关系。通过设置替代强度的不同阈值，替代图表表现出各种模式。该方法适用于两家国内机场网络，以获得一些管理见解。有人发现，机场网络通常对一次机场的破坏，但易受同时破坏替代对的影响;此外，替代对的两个机场在某些机场网络中可能不会彼此面积地靠近。

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