动态工作流的进化策略  

The Strategy of Dynamic Workflow Evolution

作　　者：曹永忠[1] 李斌[2] 丁秋林[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏南京210016 [2]扬州大学信息工程学院,江苏扬州225009

出　　处：《微电子学与计算机》2007年第9期86-88,共3页Microelectronics & Computer

基　　金：江苏省自然科学基金项目(BK2004052)

摘　　要：大型分布式系统工作流具有动态、分布、松散耦合特点。系统在维护工作流正常运行同时,还能根据实时情况分析,对工作流进行在线进化,从而构造更优流模型。对原工作流定义进行了可行替换集扩展,并给出了兼顾组合预算、任务时限以及服务信用等各因数的综合评分函数,对XML标准流日志进行在线应用挖掘,由管理Agent对工作流重新配置,实现流中变迁的替换、归并和分裂等进化操作,使其保持综合评分最优,为虚拟企业工作流管理提供进化支持。In the huge distributed system, workflow having dynamic, distributed and flexible characteristic makes the on-line management different from the classical workflow. This management agent of workflow not only should run the service-flow accurately, but also should evolve it dynamically and be sure to provide a nice workflow model every time. This paper extends the definition of WF with a candidate set of task , and then a compositive score function about the capability of the workflow is presented ,according to the budget of combination, time limit and the credit of task. A technique to find the pivotal autonomic area having declined the score is provided by mining the corresponding XML log of the workflow, The pivotal autonomic areas of workflow would be automatically replaced, split or merged by Agent, which evolves the workflow, and it would help the virtual enterprise manage their workflow dynamically and effectively.

关 键 词：工作流 日志 进化 动态 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]