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This paper presents a light inference system for context management, ready to perform reasoning tasks in resource-constrained devices. The inference system is part of a service-oriented mobile software framework which runs on Javaenabled handheld devices. This framework serves to facilitate the creation of context-aware applications, as it decouples sensor's data acquisition and context processing...
In existing mobile content service systems, the study is quite rare on automatic situation-service rule construction. Hence, a method is proposed that the semantic association rules between situations and preferences are built by quantitative frequent marked lattice. Different recommendation rules can be extracted along multi-dimensional context routes from this lattice structure. It is propitious...
Map services help people find places they wish to visit. Users input the target address and the system returns that location on a map, with additional information such as nearby points of interest, directions to the location, etc. However, these applications mainly focus on general knowledge, failing to provide personalized information that may help users find/identify a place faster. In this paper,...
Context is important in personal knowledge and social knowledge construction process. Context awareness means being able to collect environment and learning resource information from the learner and surrounding equipment to provide learners with the context-related learning activities and content. The context elements, including intra object, inter-object, session, social systemic, economic techno-physical...
Mobile commerce (M-commerce) is an attractive research area due to its relative novelty, rapid growth, and great potential in business applications. Unfortunately, there are a number of constraints effecting both performance and usability of mobile devices and network bandwidth. In addition, existing M-commerce applications are lack of fully automated business processes and still require significant...
In order to provide context-aware services, context modeling is one of the most important tasks. Ontology has been widely accepted for the context modeling but it brings some overheads in the process of reasoning large-scale and dynamic information. In mobile networks, especially, ontology should be verified to be applicable for Context-aware Services since real-time responsiveness for large scale...
“SeMoDesk” is an approach to implement the Semantic Desktop on mobile devices. The idea is to allow users to manage their personal information space using personal ontologies. In this paper, we are presenting our solution to improve location-awareness in this scenario. We have designed a location and sensor ontology as an extension to the personal ontology. This ontology is then used to retrieve relevant...
Today's mobile Internet service portals offer thousands of services and mobile devices can host plenty of applications, documents and web URLs. Hence, for average mobile users there is an increasing cognitive burden in finding the most appropriate service among the many available. On the other hand, methodologies such as bookmarks and resource tagging require a great arranging effort to handle increasing...
With the growing number of mobile devices connected to the network, demand for appropriate services according to the situational contexts of users is increasing. However, building such context-aware applications is costly because both the environments of users in the real world and available services on the network are dynamically changing. In this paper, we propose a Context Sharing Message Broker...
In this work we present "AlertMe", a semantics-based, context-aware notification system that provides personalized alerts to graduate students based on their preferences. An extensive description of the system is carried out. We present the underlying ontology that models the available knowledge, as well as how higher level knowledge inference and context-based decision making is achieved...
Mobile devices are in a widespread use today. Restricted by the features of mobile devices, such as mobility, low communication bandwidth, small capacity of memory, limited power and inconvenient interaction, mobile services are required to recommend items adapting to the user need and location. Much existing research on recommendations ignores semantic information of user dynamic historical preferences...
Modern location-aware services and applications use context and prediction methods to adapt to the needs of users and changes in the environment. The growing availability of WLAN and mobile devices offers significant opportunities for locationaware services. But the use of WLAN or RFID technologies alone provides a less accurate estimation of a user's current location. In this paper, we introduce...
This paper presents "ConServ", a Web service for context management. ConServ allows smart spaces to access user's context data according to user-defined policies. This Web service addresses the sharing and management of context data between smart spaces and as a result facilitates the creation of new smart spaces and the enhancement of old ones. Data related to a user's location, calendar,...
Seamless mobility has been described as providing collaborative mechanisms that enable a user to accomplish his or her tasks without regard to technology, type of media, or device. This paper examines how the FOCALE autonomic architecture, in conjunction with a novel understanding of the environment based on the integration of information models and ontologies, can realize these challenges.
Mobility is an emerging area that comes up with several technologies and stakeholders. Dealing with the security requirement for mobile applications means acquiring all the knowledge and the available technologies for the design and deployment of a reliable and usable countermeasure. Not only the field lacks of standards but also requires several quality constraints. To assist developers to face such...
Advancements in wireless technologies and mobile networks are increasing the demands for novel mobile services beyond voice and text-messaging applications. However, discovering such services from any device is still a major challenge. This can be considered from two perspectives: the variety of mobile devices available and the lack of service descriptions. In order to address these issues, in this...
This paper presents a new way of addressing and routing for mobile ad hoc networks on the basis of contextual information such as air pressure, brightness, wind direction and strength, or GPS position. The most common use case of context-based addressing is group communication: A participant sends a message to an a priori unspecified set of recipients, but indicates the context in which the message...
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