VERTO: a visual notation for declarative process models
Declarative approaches to business process modeling allow to represent loosely-structured
(declarative) processes in flexible scenarios as a set of constraints on the allowed flow of
activities. However, current graphical notations for declarative processes are difficult to
interpret. As a consequence, this has affected widespread usage of such notations, by
increasing the dependency on experts to understand their semantics. In this paper, we
tackle this issue by introducing a novel visual declarative notation targeted to a more