Modeling and Performance Analysis for Flexible Workflow Supporting Task Change

Being of the flexible workflow system can be rapidly and flexibly adapted to the dynamic change and the exception management in the enterprise business process, flexible workflow becomes more and more important. In this paper, based on the analysis of the generating reason of flexible workflow, the main reason of change affecting the flexibility of the workflow system is discussed, the composition and representation method of the flexible workflow system based on stochastic Petri net are described in detail; And a modeling method for flexible workflow system is proposed; Finally with a B/S based e-business system, an example of the modeling method for flexible workflow system is demonstrated, at the same time, comparison of normal workflow system and flexible workflow system supporting task change, we evaluated the performance indicators of the system´s response time and throughput.