Instability of Multilayer Networks Induced by Inter-Layer Coupling

Hyobin Kim, Farnaz Zamani Esfahlani, Samuel Heiserman, Nasim Nezamoddini, Hiroki Sayama

研究成果

抄録

Most real-world complex systems consist of multiple subsystems that interact with each other, which can be represented as multilayer networks. Implications of such multilayer topologies have been studied for system robustness, cascading failures, reaction-diffusion dynamics, etc. Meanwhile, limited attention has been paid to the effects of inter-layer coupling on the dynamical stability of multilayer networks. Here we study the stability of multilayer networks and its relationships with the stabilities of networks within individual layers. Specifically, we generated two random networks following the method of May's random ecological network model, and then coupled them to create a random multilayer network. Two parameters were systematically varied: the strength of within-layer connections, and the strength of inter-layer coupling. Stabilities of those networks were evaluated by calculating eigenvalues of their weighted adjacency matrices. We found that the whole multilayer network became destabilized by sufficiently strong inter-layer coupling even if within-layer connections were adjusted so that individual networks were stable. Also, the network instability induced by inter-layer coupling was manifested as the network size of individual networks increases. Our study illustrates that the strength of inter-layer coupling plays a critical role in determining the stability of the entire system.

本文言語English
ホスト出版物のタイトル2019 IEEE Symposium Series on Computational Intelligence, SSCI 2019
出版社Institute of Electrical and Electronics Engineers Inc.
ページ278-283
ページ数6
ISBN(電子版)9781728124858
DOI
出版ステータスPublished - 2019 12
外部発表はい
イベント2019 IEEE Symposium Series on Computational Intelligence, SSCI 2019 - Xiamen, China
継続期間: 2019 12 62019 12 9

出版物シリーズ

名前2019 IEEE Symposium Series on Computational Intelligence, SSCI 2019

Conference

Conference2019 IEEE Symposium Series on Computational Intelligence, SSCI 2019
国/地域China
CityXiamen
Period19/12/619/12/9

ASJC Scopus subject areas

  • 人工知能
  • コンピュータ サイエンスの応用
  • モデリングとシミュレーション

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