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Error and attack tolerance of complex networks

2000/07/27 by Réka Albert, Reka Albert, Hawoong Jeong +2 · 1 voice · 7,290 citations
Computer Science · Physics and Astronomy · #Complex Network Analysis Techniques #Complex network #Complex system #Degree (music) #Error detection and correction #Fault tolerance #Opportunistic and Delay-Tolerant Networks #Origins and Evolution of Life #Robustness (evolution) #Vulnerability (computing) #cond-mat.dis-nn #cond-mat.stat-mech

paper · pdf · doi:10.1038/35019019

published in Nature 406(6794), 378-382 (Nature Portfolio) · 14 pages, 4 figures, Latex

openalex publication_date 2000/07/27 · arxiv created 2000/08/03 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Many complex systems, such as communication networks, display a surprising degree of robustness: while key components regularly malfunction, local failures rarely lead to the loss of the global information-carrying ability of the network. The stability of these complex systems is often attributed to the redundant wiring of the functional web defined by the systems' components. In this paper we demonstrate that error tolerance is not shared by all redundant systems, but it is displayed only by a class of inhomogeneously wired networks, called scale-free networks. We find that scale-free networks, describing a number of systems, such as the World Wide Web, Internet, social networks or a cell, display an unexpected degree of robustness, the ability of their nodes to communicate being unaffected by even unrealistically high failure rates. However, error tolerance comes at a high price: these networks are extremely vulnerable to attacks, i.e. to the selection and removal of a few nodes that play the most important role in assuring the network's connectivity.

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