基于扩展时间工作流网的工作流过程建模

工作流管理系统中时间约束意义重大.为了在工作流模型中引入时间因素,对模型的时间性能进行评估,提出一种基于扩展时间工作流网模型.通过对模型进行形式化定义,描述了模型到工作流过程模型的映射,并针对工作流网模型存在的4种基本逻辑结构,提出一种时间线性简化规则;运用此简化规则,对工作流网模型进行压缩,以便计算所建模型的时间性能.最后结合一个工作流实例,运用提出的简化规则对约束上的常量时间进行了初步分析.

Modeling of Workflow Process Based on Extended Time Workflow Net

It is of great significance to consider time constraint in the workflow management system.To introduce time factor in the workflow model and evaluate the time performance of the model,the model based on the extended time workflow was proposed.By giving the model formalization definition,the mapping of model to the workflow process one was described,and a rule of time linear simplification presented,aimed at four basic logical structures existed in the workflow net model.By using this simplification rule,the workflow net model was reduced so as to calculate the time performance of the set model.Finally,by using this rule in an example of workflow process,the rudimental analysis of constraint constant time was done.