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How to measure Information system complexity?

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Information system complexity can be measured through various constructs. Organisational complexity, technical complexity, and uncertainty are key components in measuring IS project complexity . In the context of the Integrated Information Theory of consciousness, complexity measures aim to quantify causal connections between neurons, utilizing measures like ΦCIS and ΦCII . Additionally, in systems engineering, information entropy-based measures are used to assess complexity during conceptual design, focusing on architecture complexity in resource and functional domains . These measures provide a foundation for trade-off analysis, enabling system engineers to make informed decisions balancing complexity with other attributes and performance criteria . By considering these aspects, a comprehensive understanding and measurement of information system complexity can be achieved.

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Open access•Journal Article•DOI Complexity as Causal Information Integration. Carlotta Langer, Nihat Ay, Nihat Ay, Nihat Ay - Show less +3 more 30 Sep 2020-Entropy 6 Citations	Information system complexity can be measured using measures like ΦCII, which quantifies causal cross-influences through an iterative information geometric algorithm, the em-algorithm.
Book Chapter•DOI Information Entropy-Based Complexity Measurement for Systems Engineering and Trade-Off Analysis Jean Charles Domercant 01 Jan 2019 1 Citations	Information system complexity can be measured using information entropy-based measures in systems engineering, focusing on architecture and design complexity to enable trade-off analysis for informed decision-making.
Open access•Journal Article•DOI Measuring Information Systems Project Complexity: A Structural Equation Modelling Approach Nazeer Joseph, Carl Marnewick - Show less +1 more 18 Jan 2021-Complexity 3 Citations	Information system complexity can be measured by considering organisational complexity, technical complexity, and uncertainty. These factors underpin IS project complexity and can be managed by project managers.
Open access•Posted Content•DOI Integrated Information, a Complexity Measure for optimal partitions 27 Apr 2023	The complexity of an information system can be measured using the geometric integrated information index, $\phi_G(\Pi)$, calculated for optimal partitions with $K$ components, maximizing $\Phi$.
Integrated Information, a Complexity Measure for optimal partitions Nestor Caticha 27 Apr 2023	The paper proposes calculating complexity using the geometric integrated information index, $\phi_G(\Pi)$, based on Tononi's integrated information theory, particularly for Ising spin systems with parallel dynamics.

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