基于并行思想的工作流柔性执行方法研究

在工作流执行过程中，活动间传统的End—Start机制不能满足产品开发过程对工作流柔性的要求，从并行工程的思想出发，引入预执行的概念，使串行关系的活动并行执行。针对产品开发流程中具有大量修改设计和迭代设计的特点，提出基于预执行的数据共享方法，允许活动在执行中共享其产生的中间结果，后续活动可以利用前驱活动的中间结果提前开始执行，前驱活动可以利用后续活动的中间结果作为反馈信息及时做出调整，实现修改设计和迭代过程中活动间的协同，提高工作流执行过程的柔性。

Deepening Anticipation Idea in Flexible Execution of Workflow

Daniella Grigori et al proposed the anticipation idea to enhance flexibility of workflow execution~(4]).We propose deepening their idea to enhance flexibility further.We deepen Ref 4's idea in that we propose starting the succeeding activity before the end of the preceding activity and we still manage to keep these two activities well coordinated.In the full paper we explain our proposed deepening in much detail;here we give only a briefing.In order to solve the coordination problem of iterative process in product design workflow,we propose a method of data sharing,which allows the preceding activity to share its intermediate results(IRs) with the succeeding activity and vice versa;so the succeeding activity can use the IRs of the preceding activity to start earlier,and the preceding activity can use the IRs of the succeeding activity as feedback to make some modification quickly.Our proposed deepening can improve parallel execution of activities and realize the coordination of activities in the iterative process.