Learn More
Recent advances in the field of context reasoning and in wireless information devices, which allow mobile access and provide a multitude of context information, have enabled the provision of new, context-aware applications and services. The architecture framework described in this paper provides a very flexible approach to implementing different reasoning(More)
The IST project MobiLife (IST-2004-511607) is approaching Context-Awareness from the perspective of mobile applications and their enabling components. It envisions a highly distributed and loosely coupled solution in order to exchange context information on different semantic context levels between applications, enabling components and raw context sources.(More)
We present the Context Watcher, a mobile application that enables mobile phone users to easily and unobtrusively share personal context data such as their location, heart rate, speed, or view, with their mutual consent. Not only can the data be shared, it can also be used as input for information services, to adapt applications to the context, or to(More)
In this paper we study the case of situational reasoning on ontological descriptions in context-aware applications. We therefore discuss the logical foundations of W3C’s standard ontology language OWL and examine how this modeling language can be used to express a user’s situation. In a practical scenario and through the use of standard Semantic Web(More)
Currently available mobile devices lack the flexibility and simplicity their users require of them. To start with, most of them rigidly offer impoverished, traditional interactive mechanisms which are not handy for mobile users. Those which are multimodal lack the grace to adapt to the current task and context of their users. Some of the reasons for such(More)
Realizing services targeted to fixed network environments today is supported by a large number of environments that provide essential functionalities to service developers. However, developers of mobile services for 3G systems and beyond systems still challenge the problem of not being able to rely on a specific environment for mobile service provisioning.(More)
Individuals are interested in the semantic and not necessarily in the presentation of services. The service interaction has to support the quality of the human senses, and since quality of senses is individual, services have to adapt their presentation to each individual automatically. The concept of Generic User Interaction follows this demand by improving(More)