Community Division-based SWoT Ontology Directory Service

Internet of Things(IoT)is a global context-wide information sharing Internet applica-tion,its content is actually a collection of Internet-based services'information.However,a plenty of service systems distributed on IoT are developed independently by different organizations,the provided services are massive in quantity and dispersed geographically,due to the different constraints between the service providers and users,there are a lot of IoT data isolated with each other and formed a variety of information islands,this inner conflict of IoT restricts its further improvement.Increasingly matured semantic technol-ogy provides a solution for this problem.Due to the advantages of semantic technology in knowledge representation and sharing,it should be employed to solve the problem of resource interoperability in IoT,evolving into SWoT as an ideal form of IoT,it designed to provide users with the semantic collaboration Web services.To realize the effective utilization of Web resources,just sharing resource informa-tion between the presentation layer is not enough,effective resources organization are also necessary.In SWoT,everything as a service,so that we should well organized the numerous SWoT services to provide users with convenient and quick personalized ser-vices.However,traditional service management methods are hard to realize an effective organization at semantic level,which makes users difficult to choose their needed services.On account of existed IoT service management methods are hard to realize an effec-tive organization at semantic level,this paper takes advantage of community for it easy to express multiple facets of subjects and resources,using SWoT ontology directory service(ODS)to manage SWoT service resources.Use OWL-S to realize service description and to generate service ontology instances,where these services are provided by service discovery mechanism and service provider,classify them into the corresponding abstract service of community ontology;transform-ing the service requests from users into formal query forms by the resolver,combined with user preference and generate SWoT-ODS dynamically,and return a candidate service set to service requesters.Finally,through an experiment to verify the effectiveness and availability of the pro-posed system framework,and make a reasonable evaluation to this system by contrast verification.