关键词: 语义Web服务, Web服务模型本体, 服务质量, 服务发现, semantic Web services, Web Service Modeling Ontology (WSMO), Quality of Service (QoS), service discovery

Abstract: Currently, OWL-S and WSMO are two popular frameworks that are used to describe semantic Web Service. However, due to mainly focus on the description of the functional part, it is difficult for them to select the best services with little consideration of quality of service (QoS). To solve this problem, the WSMO specification is extended and an ontology-based meta-model of QoS called WSMO-QoS is presented. Furthermore, a QoS-based discovery framework for semantic web service is proposed, which support service discovery from three levels: basic description, IOPE and QoS. The experiment results validate the effectiveness of the framework.