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.
โ . IntroductionRecent advancement in the IoT [1] accompanies a smart life where real world objects including sensing devices are interconnected with each other. The Web representation of smart objects empowers innovative applications and services for various domains. To accelerate this approach, Web of Objects (WoO) [2] focuses on the implementation aspects to bring the assorted real world objects with the web applications. In this paper, we present a smart emergency service for shopping mall in the WoO based IoT infrastructure.The general goal of the WoO is to simplify object and application deployment, maintenance and operation of IoT infrastructures. WoO also aims to provide knowledge based IoT service by enabling object virtualization, semantic ontology based service composition and collaboration. In its implementation WoO platform [2] supports semantic modeling of objects, and plays a distinguished role to achieve thinking intelligence with objects of sensors, devices, resources and information.The heterogeneity of objects in WSSM and its application leads to adapt itself with WoO platform.WoO incorporates the application development and flexibility of access from the Web and grips the highly interconnected objects facility.
Virtualizing the educational contents and resources as well as conceptual entities would form VOs and CVOs for WoO paltform. which provides dynamicity and intelligence through composition and collaboration for self-directed learning in smart learning environment. Semantic ontology in WoO platform supports dynamic composition and collaboration among objects, VO and CVO, for intelligent learning model. The paper proposes a realization architecture model of WoO patform to support the knowledge driven composition model to form a smart learning environment.
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