Abstract
User-centric service features in a Web of Object-enabled Internet of Things environment can be provided by using a semantic ontology that classifies and integrates objects on the World Wide Web as well as shares and merges context-aware information and accumulated knowledge. The semantic ontology is applied on a Web of Object platform to virtualize the real world physical devices and information to form virtual objects that represent the features and capabilities of devices in the virtual world. Detailed information and functionalities of multiple virtual objects are combined with service rules to form composite virtual objects that offer context-aware knowledge-based services, where context awareness plays an important role in enabling automatic modification of the system to reconfigure the services based on the context. Converting the raw data into meaningful information and connecting the information to form the knowledge and storing and reusing the objects in the knowledge base can both be expressed by semantic ontology. In this paper, a knowledge creation model that synchronizes a service logistic model and a virtual world knowledge model on a Web of Object platform has been proposed. To realize the context-aware knowledge-based service creation and execution, a conceptual semantic ontology model has been developed and a prototype has been implemented for a use case scenario of emergency service.
Highlights
The user-centric service features in the Internet of Things (IoT) [1] represent an important part of daily life that maximize and optimize multiple types of user satisfaction
This paper focuses on a virtual world knowledge creation model that synchronizes the virtual world knowledge model and the service logistic model to develop a knowledge-based smart IoT environment
Attributes and properties of physical and non-physical devices are described in Resource Description Framework (RDF)/XML format, devices are virtualized in the semantic ontology to be controlled virtually as real world objects
Summary
The user-centric service features in the Internet of Things (IoT) [1] represent an important part of daily life that maximize and optimize multiple types of user satisfaction. The WoO supports semantic modeling of objects that provides a user-centric IoT service model with the use of a semantic ontology. Since objects have been defined using a semantic ontology, all the incident logs have been collected through the VOs and stored in the log repository for future use, but due to the absence of composite virtual objects (CVOs) the system lacks a context-aware knowledge-based service composition mechanism. To overcome this lack, this paper focuses on a virtual world knowledge.
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