Understanding Business Process Models: The Costs and Benefits of Structuredness
Previous research has put forward various metrics of business process models that are correlated with understandability. Two such metrics are size and degree of (block-) structuredness. What has not been sufficiently appreciated at this point is that these desirable properties may be at odds with one another. This paper presents the results of a two pronged study aimed at exploring the trade-off between size and structuredness of process models. The first prong of the paper is a comparative analysis of the complexity of a set of unstructured process models from industrial practice and of their corresponding structured versions. The second prong is an experiment wherein a cohort of students was exposed to semantically equivalent unstructured and structured process models.