Construction And Application Of Internet-Oriented Web Service Infrastructure

As Web services proliferate and being widely used, a service-oriented Internet is forming. However, there are still challenges in service discovery and sensoring each other, and also in service composition and interoperability. Service Network (SN), which is a Web service infrastructure based on semantic and social relations, was proposed to solve this problem. Unfortunately, the early version of SN was coarse, weak semantic-based and uneasy to use.Based on these problems, a polished and easy to use Service Network (SN), which has three-layer architecture and clearly defined relations, was proposed in this thesis. Furthermore, the thesis proposed a Web service annotation approach and used it in SN constructing; proposed a Web service relation mining approach and used it in SN evolving; proposed a requirements analysis and service discovery process based on SN, and did useful effort on Web service automatic processing. In details, the contributions of this thesis are listed as following:1. Proposition of a polished and easy to use SN model based on the research of Web service organization. Compared to the early version SN, vertical and horizontal relations are more clearly defined on semantic level, thus this three-layer architecture is more useful and better facilitated to service discovery.2. Proposition of a Web service annotation approach based on the contrastive analysis between domain ontology and WSDL document, which builds a foundation of constructing complete semantic SN and mining service relations. The practice proved that the approach proposed in this thesis could solve annotation problem with high efficiency. It has been used in SN constructing process.3. Proposition of a Web service relation mining approach in semantic level, which achieves self-evolution of SN. Based on the methods such as ontology reasoning, Competitive and Collaborative relations have been mined among annotated Web services. Service relation mining is both the foundation of SN evolution and the way of bottom-up Web service composition.4. Proposition of a process of requirements analysis and service discovery based on SN and also design of SN running mechanism. Fully use of the three-layer architecture and service relations, the process from user requirements to suitable services is designed, which qualitatively demonstrates that SN has the advantage in service discovery and recommendation.In summary, this thesis organized Web service in a more rational network, proposed relevant methods to construct and evolve such a network. Furthermore, the basic process of Service Network application was proposed. The researches in this thesis make Service Network a real Internet-oriented Web service infrastructure.