期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
卷 31, 期 26, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979217501867
关键词
Multilayer transportation networks; network aggregation; structural evolution
资金
- National Natural Science Foundation of China [11405118]
- Hubei Provincial Department of Education [16D049, B2016066]
The air transportation network across a certain area, a typical multilayer complex system, is composed of a number of individual airlines, each of which forms a single layer. A central problem in airline merging is the minimal number of layers, denoted by n(ml), that needed for the merged network to function nearly as well as the fully aggregated network. For this purpose, we monitor several structural measures during the network aggregation process in which n(ml) is gradually increased. For China Air Transportation Network (CATN) we identify a common, sharp transition point yielding n(ml) = 9. Whereas for European Air Transportation Networks (EATN) there is no clear signal of such a transition point. The transition point of CATN is confirmed by means of the Wasserstein distance and the relative entropy. Our results indicate that there is still room in the optimization of CATN while for EATN, it seems better to keep the present structure.
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