Journal
IIE TRANSACTIONS
Volume 43, Issue 9, Pages 661-675Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/0740817X.2010.546387
Keywords
Complex network; network reliability assessment; critical components; multi-objective optimization
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Many infrastructures are now considered to be critical for both the economic development and general functioning of modern societies. Thus, understanding their performance is important as a basis to develop intelligent and cost-effective ways to protect these networks. In this article, a critical infrastructure is modeled as a complex network for which a new metric is defined to understand its reliability. This metric called reliability describes the average reliability between every pair of nodes in a complex network. As such, it is related to the two-terminal reliability concept in the traditional network context. Furthermore, in an effort to identify the most critical components that affect reliability , a multi-objective optimization problem, known as the critical component detection problem, is introduced. The solution to this problem provides two important insights about the behavior of a complex network: (i) an approximation to the set of optimal solutions that identifies the most critical components; and (ii) a quantitative assessment of how these failures affect the complete complex network.
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