From Requirements via Colored Workflow Nets to an Implementation in Several Workflow Systems

Care organizations, such as hospitals, need to support complex and dynamic workflows. Moreover, many disciplines are involved. This makes it important to avoid the typical disconnect between requirements and the actual implementation of the system. This paper proposes an approach where an Executable Use Case (EUC) and Colored Workflow Net (CWN) are used to close the gap between the given requirements specification and the realization of these requirements with the help of a workflow system. This paper describes a large case study where the diagnostic trajectory of the gynaecological oncology care process of the Academic Medical Center (AMC) hospital is used as reference process. The process consists of hundreds of activities. These have been modeled and analyzed using an EUC and a CWN. Moreover, based on the CWN, the process has been implemented using four different workflow systems. This shows the applicability of our approach and allows for an evaluation of different approaches towards flexibility in workflow systems.