Abnormal phenomenon in robustness of complex networks with heterogeneous node functions

Jiajing Wu, Wei You, Taocheng Wu and Yongxiang Xia

Physica A: Statistical Mechanics and its Applications, 2018, vol. 506, issue C, 451-461

Abstract: Cascading failure occurring on complex networks has received increasing research attentions in the past decades. In most current studies, a basic assumption is that each node in the network serves the same function and shares the same capacity redundancy. However, many real networked systems may have heterogeneous node functions. In this paper, we consider a data-transmission network which contains two types of nodes: routers and hosts, and study how the capacity redundancy of different nodes affects network robustness. It is well acknowledged that more capacity redundancy usually leads to better network robustness. However, we observe a counter-intuitive phenomenon that the increase of some nodes’ capacity redundancy sometimes results in the decline of the whole network’s robustness. Next, we try to explain this paradox of capacity redundancy by analyzing the process of cascading failure on a small-size scale-free network, and find that this abnormal phenomenon is related to a particular structure in both theoretical and realistic scale-free networks. Our results advance understanding of the robustness for networks with heterogeneous node functions.

Keywords: Complex network; Heterogeneous node functions; Cascading failures; Robustness (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437118305181
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:506:y:2018:i:c:p:451-461

DOI: 10.1016/j.physa.2018.04.090

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().