基于工作流模式的OWL-S过程模型分析及其应用

确定OWL-S过程模型描述Web服务之间交互协议的能力和缺陷，为组合Web服务执行提供有效支持。将组合web服务视为基于Web服务的工作流，利用OWL-S过程模型的控制结构给出工作流模式的实现方案，分析出OWL-S描述web服务之间交互协议的能力及缺陷；在此基础上，设计并实现基于OWL-S的组合web服务执行工具，通过验证Web服务调用的有效性及Web服务之间交互协议的有效性，提高组合Web服务执行的健壮性。

Analysis of OWL-S Process Model Based on Workflow Patterns and its Application

Ascertaining the capabilities and the limitations of the OWL-S process model for describing the interaction protocol between Web services is important for the effective performance of composite Web services. A composite Web service can be regarded as a service-based workflow. The implementations of workflow patterns with the control con- structs of the OWL-S process model are presented in this paper. As a result, the capabilities and the limitations of the OWL-S process model for describing the interaction protocols can be clarified. A prototype tool executing composite Web services which are described by OWL-S is designed and implemented. This tool validates the interaction protocol between services and the compatibility of parameters. Therefore, it makes the performance of composite Web services more robust.