Research On Semantic-based Web Service Discovery

Service Discovery means customers find the suitable service from different services by some way. Some researchers has imported service discovery mechanism based on semantic, as there are some disadvantages including low-recall and low-precise when using keywords matchmaking algorithm. But current semantic service model lack the descriptions of the quality of service, and the semantic-based service matching is unilateral. To solve the problems, the paper does work on the key technologies including semantic description model, semantic-based service discovery model and the matchmaking algorithm.The paper imports the Semantic Web technology to the service discovery, and designs a Semantic-based service discovery model based on UDDI, and does more details in the core sub-model, named MatchMaker. Establish the science and research domain ontology; define the semantic description model, named SSQD (Service Semantic and QoS Description) which have the ability to describe the quality of service, and improve the similarity matchmaking algorithm which combines the structural features of ontology to consider the quality of service. At last, a semantic-based service discovery prototype system has been developed, and the test results have been given. And the algorithm proposed in the paper has been proved working well through the analysis of the test results.