ATREUS: A model for the conceptual representation of a workflow

We propose a workflow conceptual model able to represent clinical and managerial activities within health-care structures, the ATREUS model. This model was defined taking into account the intrinsic difficulties and complexity of processes in the health-care domain. This model uses: hypergraphs to represent processes graphically; a textual representation which describes each activity; and a state diagram to control the activity development. The model allows a top-down refinement of processes.