迁移工作流系统中本体替换的柔性机制

Flexible Mechanism Based on Ontology Substitution in Migrating Workflow System

当前工作流系统普遍缺乏柔性,导致动态适应性和实用性较差.本文结合本体技术讨论了工作流柔性,提出一个基于本体替换的柔性机制,在预定义的子工作流或资源无法得到时,寻找到可替代的子工作流或资源.将该机制应用到迁移工作流模型中,提出柔性迁移工作流系统框架,使工作流系统从建模和执行都具有良好的柔性和适应性,同时降低复杂性.该机制有效实现了动态联盟工作流系统的重构和规模扩充.

Current workflow systems mostly lack flexibility, which lead to their dynamical adaptability and utilization are poor. Workflow flexible mechanism is discussed based on ontology technology and ontology substitution mechanism is then proposed. When the sub-workflow or resource that has been defined in advance cannot be obtained, the substituted sub-workflow or resource may be found using this mechanism. This mechanism is extended to migrating workflow model and the framework of flexible migrating workflow is proposed. Thus workflow modeling and enactment are both flexible, and the complexity of whole system is decrease. The mechanism supports the reconfiguration and scalability of the workflow system of dynamic virtual organizations.