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A process is described by Weske as “a set of activities performed in coordination in an organizational and technical environment”. More thoroughly, a process determines the sequence of activities, the constrains for their execution, and the actors to be involved.

Process orientation is an accepted paradigm of organizational design that drives corporate success. Process Management System (PMS), which handles the implementation of process orientation, is continuously attract the attention from academia and practice.

One of the main benefits of using PMS in the enterprise is that the interactions between users and PMS can be adapted quickly when changes to real-world processes occur. These adaptations are enabled by changing the corresponding process models in a PMS. Process modeling is crucial to better understand the processes and to identify any problems.

Classically, most of the process modelings follow activity-centric modeling paradigm, which mainly focus on the atomic activities and their ordering in a flowchart-like process model, lacking an explicit integration with real data.