TY - JOUR A1 - Polyvyanyy, Artem A1 - Garcia-Banuelos, Luciano A1 - Dumas, Marlon T1 - Structuring acyclic process models T2 - Information systems N2 - This article studies the problem of transforming a process model with an arbitrary topology into an equivalent well-structured process model. While this problem has received significant attention, there is still no full characterization of the class of unstructured process models that can be transformed into well-structured ones, nor an automated method for structuring any process model that belongs to this class. This article fills this gap in the context of acyclic process models. The article defines a necessary and sufficient condition for an unstructured acyclic process model to have an equivalent well-structured process model under fully concurrent bisimulation, as well as a complete structuring method. The method has been implemented as a tool that takes process models captured in the BPMN and EPC notations as input. The article also reports on an empirical evaluation of the structuring method using a repository of process models from commercial practice. KW - Process modeling KW - Structured modeling KW - Structuring KW - Model equivalence KW - Petri net unfolding KW - Modular decomposition Y1 - 2012 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35691 SN - 0306-4379 VL - 37 IS - 6 SP - 518 EP - 538 PB - Elsevier CY - Oxford ER -