Empirical Assessment of Resilience

Resilience is the ability of a system to return to its normal operation state after a change or disturbance. Frequently, resilience of a system can be only empirically estimated due to the complexity of the underlying mechanisms. While traditional dependability uses quantitative characteristics based on averaging the impacts of faults, resilience requires more focused attributes on the impacts of disturbances. The paper summarizes the main requirements on the statistical background needed for resilience characterization and presents an approach based on Exploratory Data Analysis (EDA) helping to understand disturbance impacts and their respective quantitative characterization.

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