模糊环境中工作流任务分配的多级模型

A Multilevel Model of Task Assignment in Fuzzy Situations of Workflow

对工作流实例中各用户型任务进行自动优化分配是提高工作流管理系统运行效率的关键技术之一.在详细分析了影响用户型任务分配的多种因素及其语意模糊性后,提出了一个可组合的任务分配多级模型以及相应的任务分配方法,详细讨论了具有自适应能力的影响因素权重设计方法.最后,通过与其他任务分配方法对比,分析了该任务分配方法的性能.

The automatic assignment of user task is a key technology for increasing the running efficiency of workflow management system. Workflow engines are always obliged to assess a complex and confusing situation, identify the complex relationship of candidates and tasks, decide to assign a special task to the most appropriate candidates, and ensure workflow system executes efficiently. The effectiveness depends largely on the evaluation of the influencing factors. After systematically analyzing the influencing factors and their linguistic fuzziness of user task assignment, a sectional multilevel model of task assignment and a task assignment method corresponding to the multilevel model are put forward. Furthermore, the design method of all adaptive weighting factors in the task assignment model is also discussed briefly. Finally, the performance of the multilevel model for task assignment is given by comparing the simulation result of the multilevel model and other two task assignment methods.