工作流模型的仿真分析

Workflow Model Simulation Analysis

为了使管理者能够更加科学,有效地对工作流进行管理,应用仿真技术对模型实施实时跟踪,及早发现工作流瓶颈等问题有着现实的经济意义。针对当前工作流模型仿真方法的不足,提出了一种基于虚拟运行环境的工作流仿真方法,通过建立工作流虚拟运行环境,以仿真引擎仿真活动的执行,自动处理过程中的半自动化活动或人工活动,并采用规则与随机变量相结合的方法处理仿真过程中遇到的不确定因素,从而完成工作流仿真。为了增强仿真的可信度和可视性,将虚拟现实技术引入仿真过程的动画显示。介绍了工作流虚拟运行环境的构成,环境中核心组件(仿真引擎)的工作方式,并讨论了基于代理的虚拟环境实现。

In order to manage the workflow more scientifically and effectively, it is important to use simulation model for implementing real - time tracking, and detecting workflow bottleneck problems as early as possible. In wiew of current workflow model simulation method＇s limitation, in this paper, a new workflow simulation method based on virtual operating environment is proposed. By building up workflow virtual operating environment, the simulating engine impels the workflow instance, dealing with semi - automatic or manual activities automatically. And it deals with the uncertainty happened in simulating process by using rules and stochastic variable together. In order to enhance the reliability and visibility of simulation, virtual reality is introduced to animated display of simulation. In this paper, the structure of workflow virtual operating environment is given. The operation of simulation engine and agent - based realization of virtual environment is discussed.