A New Definition of Complexity in a Risk Analysis Setting. Jensen, A. & Aven, T.
A New Definition of Complexity in a Risk Analysis Setting [link]Paper  doi  abstract   bibtex   
[Highlights] [::] A new definition of complexity is presented [::] It allows for improved clarity on the links between complexity and risk [::] The idea is to link complexity to activities, and the knowledge about the consequences of these at different levels [Abstract] In this paper, we discuss the concept of complexity in a risk analysis context. Inspired by the work of Johansen and Rausand, a new perspective on complexity is presented which includes several common definitions of complexity as special cases. The idea is to link complexity to activities, to the knowledge about the activity and its consequences (including scenarios, events, outcomes), and to the knowledge about the sub-activities: an activity is considered complex if we have poor knowledge about the consequences of the activity, even if we have strong knowledge about the consequences of its sub-activities. In the paper, we show how this perspective provides new insights about the complexity concept and related risk understanding, risk assessment and risk management. The perspective allows in particular for novel ways of characterizing the risk of complex systems and activities. Some examples are used to illustrate the perspective and the discussion.
@article{jensenNewDefinitionComplexity2017,
  title = {A New Definition of Complexity in a Risk Analysis Setting},
  author = {Jensen, Anders and Aven, Terje},
  date = {2017-11},
  journaltitle = {Reliability Engineering \& System Safety},
  issn = {0951-8320},
  doi = {10.1016/j.ress.2017.11.018},
  url = {https://doi.org/10.1016/j.ress.2017.11.018},
  abstract = {[Highlights]

[::] A new definition of complexity is presented [::] It allows for improved clarity on the links between complexity and risk [::] The idea is to link complexity to activities, and the knowledge about the consequences of these at different levels

[Abstract]

In this paper, we discuss the concept of complexity in a risk analysis context. Inspired by the work of Johansen and Rausand, a new perspective on complexity is presented which includes several common definitions of complexity as special cases. The idea is to link complexity to activities, to the knowledge about the activity and its consequences (including scenarios, events, outcomes), and to the knowledge about the sub-activities: an activity is considered complex if we have poor knowledge about the consequences of the activity, even if we have strong knowledge about the consequences of its sub-activities. In the paper, we show how this perspective provides new insights about the complexity concept and related risk understanding, risk assessment and risk management. The perspective allows in particular for novel ways of characterizing the risk of complex systems and activities. Some examples are used to illustrate the perspective and the discussion.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-14488328,~to-add-doi-URL,complexity,definition,emergent-property,epistemology,feedback,incomplete-knowledge,integrated-modelling,knowledge-integration,networks,system-engineering,system-of-systems,system-theory,uncertainty,uncertainty-propagation}
}
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