一个工作流元模型的分析及其时态扩展

时态工作流将时间作为一个维度引入工作流描述．通过对一个典型工作流元模型的分析，得出时态属性是工作流各要素及其关系的普遍属性；定义了时态信息的规范表示和一组时态数据演算，并对时态工作流中主要元素进行了形式化描述；用一个例子说明如何运用上述成果进行过程建模、并处理工作流中的时态数据．结论表明时态工作流能综合处理过程的效率问题和角色、数据、应用程序的时间有效性问题．

Analysis and Temporal Extension of a Workflow Meta-Model

Temporal Workflow introduced time into workflow as a dimension. Firstly, analyzing a typical workflow meta-model showed that temporal attributes were the popular attributes of elements and relationships in workflow. Then, the denotation of temporal elements and a group of temporal data calculations was defined, and some primary elements in Temporal Workflow were formalized. Finally, an example showed how to build a process model by above results, and how to handle temporal data in workflow. The results show that Temporal Workflow can handle the time validity of roles, data, and invoked applications, together with the efficiency of processes.