ABSTRACT
Though continuously works have been carried out to cope with the rapidly changing requirements, majority of traditional workflow modeling technology could only deal with the predefined
1 INTRODUCTION
Workflow modeling is a powerful and practical tool for transaction management. By introducing control workflow, transaction flow and other definitions (Adam et al., 1998), workflow modeling could easily express the relationship between different tasks. Moreover, workflow modeling could make the running process of complex system to be easily understood and executed especially for the system involves cooperation between different departments. To put it simply, a workflow itself is a process where varieties of documents, information and tasks could be delivered from one executor to another. For example, workflow modeling has benefited the manufacturing industry by giving instructions to the predefined requirements of each process (Cheng et al., 2011), moreover, workflow modeling has also been applied to supply chain (Ma et al., 2011), E-science (Deelman et al., 2009) and other research domains.
