Assaying the importance of system complexity for the systems engineering community

Matthew W. Potts, Pia A. Sartor, Angus Johnson and Seth Bullock

Systems Engineering, 2020, vol. 23, issue 5, 579-596

Abstract: How should organizations approach the evaluation of system complexity at the early stages of system design in order to inform decision making? Since system complexity can be understood and approached in several different ways, such evaluation is challenging. In this study, we define the term “system complexity factors” to refer to a range of different aspects of system complexity that may contribute differentially to systems engineering outcomes. Views on the absolute and relative importance of these factors for early–life cycle system evaluation are collected and analyzed using a qualitative questionnaire of International Council on Systems Engineers (INCOSE) members (n = 55). We identified and described the following trends in the data: there is little between‐participant agreement on the relative importance of system complexity factors, even for participants with a shared background and role; participants tend to be internally consistent in their ratings of the relative importance of system complexity factors. Given the lack of alignment on the relative importance of system complexity factors, we argue that successful evaluation of system complexity can be better ensured by explicit determination and discussion of the (possibly implicit) perspective(s) on system complexity that are being taken.

Date: 2020
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https://doi.org/10.1002/sys.21550

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Persistent link: https://EconPapers.repec.org/RePEc:wly:syseng:v:23:y:2020:i:5:p:579-596

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