基于过程本体的语义Web服务过程模型的研究

Research on Semantic Web Service Process Model Based on Process Ontology

摘要: 针对Web服务本体语言(OWL-S)过程模型存在Web服务发现时对过程信息和QoS属性表达能力不足的问题，本文提出了一种基于过程本体的语义Web服务(SWS)过程模型的建立方法。首先，采用循环递进、逐步求精的本体建模方法建立过程本体，并且在过程本体中考虑QoS属性；其次，对其进行形式化定义，得到语义Web服务过程模型；最后，设计了一种转换算法，利用该算法将语义Web服务过程模型转换为过程图，并检测转换后的过程图的正确性。本文最终通过实验验证了语义Web服务过程模型的可用性和有效性。

Abstract: Aiming at the problem that Ontology Web Language for Services (OWL-S) process model lacks capacity for process information of Web Service discovery and expressing Quality of Service (QoS) attributes, this paper proposes an establishment method of Semantic Web Service (SWS) Process Model based on Process Ontology. First, the cycle progressive and stepwise refinement ontology modeling method is adopted to build process ontology which takes QoS attributes into account. Second, this paper gives a formalized definition of this process ontology and obtains the SWS process model. Finally, this paper designs a transformation algorithm, utilizes this algorithm to transforming SWS process model to process graph and detects the correctness of process graph after the conversion. At last, the availability and effectiveness of SWS process model are verified by experiments in the paper.