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Fuzzy dynamic input-output inoperability model
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DOI：10.1016/j.ijcip.2011.09.003.png)
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Abstract
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This paper describes an extension of the input-output inoperability model (IIM) that accommodates uncertain and vague data. In the resulting fuzzy version of the dynamic IIM model (FD-IIM), the level of inoperability of each infrastructure and the Leontief coefficients are specified using fuzzy variables that express expert knowledge about infrastructure interdependences. An important result is that, under certain conditions, solution convergence for the fuzzy model can be inferred based on the stability properties of the crisp (non-fuzzy) version of the system of interest. A case study involving the Italian critical infrastructure is used to demonstrate the feasibility and utility of the approach. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:
Infrastructure interdependences
Input-output inoperability model
Fuzzy systems
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