Assessment Methods of Network Resilience for Cyber-Human-Physical Systems

Impact of Systemic Heterogeneity on the Failure Propagation of Networked Critical Infrastructure Systems: An Explorative Study Considering the Heterogeneity in Susceptibility to Overload Failure

“…Four criteria, namely effectiveness, complexity, maturity, and replicability, are used to compare the existing approaches for modeling failure propagation across CISs. Effectiveness refers to the ability of the modeling approach to accurately model failure propagation (Duan et al, 2020); Complexity mainly refers to computational complexity in modeling the failure propagation (Ouyang, 2014;Duan et al, 2020); Maturity refers to the development level of each approach, which can be measured by the number of existing publications and applications (Ouyang, 2014;Duan et al, 2020); Replicability describes the difficulty in replicating an approach based on the descriptions available in relevant prior publications and accessing relevant empirical data (Ouyang, 2014). The effectiveness, complexity, maturity and replicability of each modeling approach are assessed and rated "L" (low), "M" (medium) or "H" (high) based on the rating criteria proposed in prior research (Ouyang, 2014;Duan et al, 2020).…”

“…While several studies have pointed out the possible impact of systemic heterogeneity and the need to account for this impact in the modeling of CISs failure propagation and the estimation of CISs disaster losses (De et al, 2008), the extent of this impact and its mechanism have largely remained unknown. CISs are largely considered homogenous in these models with respect to their disaster response patterns, which inevitably leads to significant inaccuracies in the simulated failure propagation processes and estimated overall disaster impacts (Duan et al, 2020).…”