Research On Cloud Service Discovery Based On Cloud Ontology In Semantic Web Of Things

With the development of cloud computing, the number and types of cloud services which are provided by cloud computing providers are also increasing. Therefore, how to discovery the cloud services quickly which needed by users has become the key issue to be solved in the field of cloud computing. Traditional cloud service discovery method is based on keyword searching, and the cloud services need to be checked by the user manually. Query results of this method contain irrelevant information, which leads to miss the relevant services. At the same time, this method can not satisfy the user high-grade demand. In order to solve these problems, a method of ontology-enhanced cloud services discovery is proposed. The new method takes advantage of cloud ontology concepts matching technology, and calculating the similarity between cloud ontology descriptions and user demands.On the basis of the existing cloud service discovery methods in China and abroad, this paper makes an innovation and optimization of the cloud service discovery method. At first, introduce the concept and composition of the Web of things, and expounds the significance of the Web of things for the discovery of cloud services; Secondly, cloud computing services provided by the mutual influence and constraints, access to the field of cloud computing has been recognized by the common knowledge, to achieve a common understanding of the field of cloud computing. Build a cloud ontology based on cloud service and cloud body between the concepts of association application to cloud services discovery process to achieve of cloud computing in the field of knowledge reasoning and solving the semantic problem between human and computer, better realize the knowledge sharing and reuse; Finally, describes the specific methods of cloud service discovery based on cloud ontology in Semantic Web of Things. This method makes use of ontology concepts and relations between concepts to make the computer understand the meaning of the concept.According to the above method, this paper puts forward a method of cloud service discovery based on cloud ontology in Semantic Web of Things. Combine with tools, such as Protege and Java, the prototype system of cloud service discovery based on cloud ontology in Semantic Web of Things has been designed and implemented. The prototype system is divided of information pre processing module and service discovery module. The service discovery module mainly includes service matching module and service sort module. At last, the function interface of the system is designed and implemented, and the system is tested by the test set. Description of framework, algorithm and experimental performance analysis show that the new method can provide more accurate services for service requesters. Moreover, it can efficiently discovery some cloud services which meet the demands of users.