Sarfraz Alam

SenaaS: An event-driven sensor virtualization approach for Internet of Things cloud

In this paper, we propose an Internet of Things (IoT) virtualization framework to support connected objects sensor event processing and reasoning by providing a semantic overlay of underlying IoT cloud. The framework uses the sensor-as-aservice notion to expose IoT clouds connected objects functional aspects in the form of web services. The framework uses an adapter oriented approach to address the issue of connectivity with various types of sensor nodes. We employ semantic enhanced access polices to ensure that only authorized parties can access the IoT framework services, which result in enhancing overall security of the proposed framework. Furthermore, the use of event-driven service oriented architecture (e-SOA) paradigm assists the framework to leverage the monitoring process by dynamically sensing and responding to different connected objects sensor events. We present our design principles, implementations, and demonstrate the development of IoT application with reasoning capability by using a green school motorcycle (GSMC) case study. Our exploration shows that amalgamation of e-SOA, semantic web technologies and virtualization paves the way to address the connectivity, security and monitoring issues of IoT domain.

Interoperability of Security-Enabled Internet of Things

The future Internet will embrace the intelligence of Web 3.0 and the omnipresence of every day connected objects. The later was envisioned as the Internet of Things. Security and interoperability concerns are hindering the service innovations using the Internet of Things. This paper addresses secure access provision to Internet of Things-enabled services and interoperability of security attributes between different administrative domains. In this paper we proposed a layered architecture of Internet of Things framework where a semantically enhanced overlay interlink the other layers and facilitate secure access provision to Internet of Things-enabled services. The main element of semantic overlay is security reasoning through ontologies and semantic rules. Finally the interoperability of security aspect is addressed through ontology and a machine-to-machine platform. This paper provides implementation details of security reasoning and the interoperability aspects and discusses crucial challenges in these areas.

A Semantic Enhanced Service Proxy Framework for Internet of Things

This paper proposes a semantic enhanced service proxy framework for internet-of-things cloud. The framework exposes IoT clouds smart objects as services by virtue of service orientation and virtualization. The framework uses an adapter oriented approach to address the issue of connectivity with different types of smart objects. We employ a query based service re-route mechanism to decouple service provider and service consumer. We propose micro-formats based service description template for associating smart object location with its service end-point. As a step toward enhancing smart objects service publication and discovery, we adopt a service advertisement approach within the IoT cloud perimeter that automates service publication and discovery process. Our proof-of-concept prototype implementation shows that the existing technology enablers are capable of realizing the service oriented IoT vision, which does not only plug smart objects into the internet but also link the information resided in smart objects into the fabric of the web.

Integrating Mobile Devices into Semantic Services Environments

This paper addresses mobile service provisioning in a mobile supported sensor network. The challenges of secure service provisioning in such a network is tackled through a two-layer approach, using the encryption on the radio layer and policies for device capabilities and service access. This paper suggests the mobile phone acting as control centre for the sensors. The implementation is based on a distributed semantic service repository, allowing the mobile services to become part of a semantic service composition. The semantic policy server connects the device capabilities, the user preferences and the service functionality. The papers provides the functional architecture and implementations of key elements of this architecture.

Toward User-Centric Privacy-Aware User Profile Ontology for Future Services

Personalization is one of the key features of the future Internet. However, the success of personalized services mostly relies on user profiles. Therefore, a generic, shareable, and reusable user profile is crucial for service providers for the uptake of personalized services. This paper proposes a user-centric personalization approach. The core of this approach is a user-centric user profile where user is in the center and experience perceived control over his information. We use Ontology Web Language (OWL-DL) to formally represent user relevant information in ontology. We present profile and privacy enhancement mechanism to increase profile applicability and user privacy respectively. The paper also offers a policy based approach to ensure authorized access of user profiles among third parties. Furthermore, we formally represent authorization policies by exploiting Semantic Web Rule Language (SWRL) and evaluate policies by employing Semantic Query Enhanced Web Rule Language (SQWRL).

Semantic Personalization Framework for Connected Set-Top Box Environment

This paper proposes a semantic enhance personalization framework for connected set-top-box (STB) home environment. It introduces the mobile phone as context-sensor. Furthermore, semantic web technologies are used to develop user profile ontology and content ontology based on TV-Anytime specification. This paper also proposes a simple STBcentric match making algorithm by leveraging the Semantic Web Rule Language (SWRL). In addition to user preferences the match making algorithm also incorporates the virtual group preferences and user context to provide a personalized list of contents and interactive services. The implementation of key components of the framework is performed in order to show the feasibility of the approach.

Enabling Sensor as Virtual Services through Lightweight Sensor Description

This paper proposes a virtualized Internet of Services (IoS) space framework for connected objects. The framework allows to expose the connected objects sensor capabilities, functionalities and data as virtual sensor services and advertise these services to social network sites in addition to service registries for the enablement of a connected people IoS space. In this regard, we develop lightweight ontologies both for sensor capabilities and functionalities and the IoS space. The paper also offers a policy based service execution approach to abate the traffic to and from a sensor node which in turns increases the sensor node battery life. We select an electrical vehicle as case study and implement a proof-of-concept by using semantic technologies and Sun SPOT sensor platform.

Sociality brings Security in Content Sharing

Sharing digital contents on the Web has become one of the most popular activities on the Internet. When the contents are sensitive in nature, sharing them online has security implications. Recently social relations are used extensively as access constraints to secure the content sharing. However only relation cannot provide personalized and granular enough access control. To mitigate the problems, this paper proposes an access authorization model incorporating diverse real life social relations and associated attributes such as trust, distance of relations and frequency of interactions. The model comprises of a formal knowledge base and personalized access authorization policies. We implement the model using the capabilities of semantic technologies. The paper also demonstrates practical applications of such model.

SemSUP: Design and implementation of semantic enhance social-aware user profile

This paper proposes a semantic enhance social-aware user profile to address the issues of capturing and modeling user information for personalized services and contents. We also identify design requirements for user-centric profile to enhance its applicability in different domains and usage scenarios. In addition, the paper also provides the refinement algorithm to confine the user profile to most recurrent preferences. We use a policy base approach to ensure user privacy and authorize sharing of profile information with third parties. We formally represent authorization policies by exploiting Semantic Web Rule Language. The paper also provides evaluation of the proposed ontology by comparing it with the selected existing user profile ontologies.

A framework for privacy in social communities

Web-based social communities are one of the most widely used applications nowadays. Recently, privacy concerns within these communities have increased significantly. This paper proposes a framework which addresses these challenges by introducing a distributed social community mechanism and relation-based content access management by exploiting semantic web technologies. In this regard, a community framework along with fine-grained access mechanisms are formalised using the Web Ontology Language (OWL). Instead of an explicit definition, some additional facts of the mechanisms are inferred by executing access authorisation policies through semantic web rules. These implicit facts answer the queries of the information requesters and can optionally be passed back to the formalised knowledge base to check for the validity and consistency. This paper also presents the components of the functional architecture of the framework.