关键词: 动态服务聚合 流程建模 流程定义元模型 扩展工作流网 WSCP／R-net

Abstract: One of important issues of process-driven dynamic Web Services composition is supporting dynamic variation of Web Services. To satisfy this request the designing model of traditional workflow must be improved. This paper proposes the concept of SN and SG

Key words: Dynamic Web services composition, Process modeling, Process definition meta-model, Extended workflownet, WSCP/R-net