Web Service Composition Based On Semantic Web Services

With the rapid development of Web Service,more and more Services are becoming available on the Internet. But almost all of them are individuals and simple functional units,which can not fulfill the requirement of process integration. Composing the existing Services into new functionality can overcome the difficult above, now it becomes very essential for enterprises and individual. To solve the lack of efficient discovery mechanism for Web Services, a Semantic Web technology based Web Services discovery approach is proposed. The foundation of this approach is the Web services related.The main points of this dissertation are described as follows: adding semantic description on the Web Services through extending WSDL; proposing the composability model for Semantic Web Services; giving a matchmaking algorithm and describing a Semantic Web Service composition architecture.In this paper, we present a semantic-based description method of Web Service composition. It extends WSDL with those descriptions to implement the semantic mark on the Web services. Although there are already many description languages on the semantic Web services, such as owl-s etc. But we directly extend the WSDL to make it more conform to the industrial standard. Based on those semantic marks, We propose the layered composite model and composite algorithm.