on delegation and workflow execution models
Workflow systems have long been of interest to computer science researchers due to their practical relevance. Supporting delegation mechanisms in workflow systems is receiving increasing research interest. In this paper, we conduct a comprehensive study of user delegation operations in computerized workflow systems. In a workflow system, the semantics of a delegation operation are largely based on three factors: the underlying workflow execution model, task type and delegation type. We describe three different workflow execution models and examine the effect of various delegation operations in each workflow execution model. We then extend our workflow execution models to examine the effect of various delegation operations in different role-based workflow execution models.
delegation workflow management systems