Privacy is one of the areas of security with tradeoffs in ubiquitous computing and tends to a difficult, yet necessary, design issue in such dynamic environments. Context and social nuances contribute to creating privacy for the user, making it a meta-property. Developers currently incorporate little support in designing frameworks that help endusers manage their privacy in an undaunted way. In...

The paper presents a logical framework for the modelling of context aware systems. The framework consists of three first order languages that together make it possible to represent all aspects of such systems and which thus provide a transparent modelling framework. The framework is constructed for the use in semantic modelling of context aware systems and models can for most parts easily be im...

Context-aware systems in a smart space environment must be aware of the surrounding contexts and adapt to changing contexts in highly dynamic environments. Data managements of contextual information are different from traditional approaches because of the contextual information are dynamic, transient, and fallible. Consequently, capabilities to detect context inconsistency and maintain consiste...

Information technology is increasingly pervading our environment, making real Mark Weiser’s vision of a “disappearing technology”. The work described in this paper focuses on using context to enable pervasive system personalization, allowing context-aware sensor-data tailoring. Since sensor networks, besides data collection, are also able to produce active behaviours, the tailoring capabilities...

Network embedding (NE) is playing a critical role in network analysis, due to its ability to represent vertices with efficient low-dimensional embedding vectors. However, existing NE models aim to learn a fixed context-free embedding for each vertex and neglect the diverse roles when interacting with other vertices. In this paper, we assume that one vertex usually shows different aspects when i...

A good software is a software that is invisible for the user. This is possible by making context explicit in the software. The increasingly interest for the notion of context appears through the number of approaches based on it. Initially, context was mainly considered in Engineering and Cognitive Science. Now even in Engineering, one sees two sub-approaches considering context at the level of ...

Context-aware services platforms aim at supporting the handling of contextual information in order to provide better user-tailored services. This paper addresses our current efforts towards a configurable and extensible services platform for context-aware applications. It discusses the use of a language and ontologies to cope with configurability and extensibility aspects.

The problem of inconsistent information in databases often arises in the context of data integration and data exchange. In these areas the common assumption is that the real world is consistent, thus an inconsistent database does not correspond to any reliable state and it needs to be “repaired” according to a chosen policy. Many of these policies have to deal with the problem of an exponential...

In this article, we report software architectures for context awareness in mobile computing environments, sensor centric systems and discuss context modeling issues. Defining an architecture for supporting context-aware applications for mobile devices explicitly implies a scalable description of how to represent contextual information and which are the abstraction models capable of handling suc...

Context-aware systems are applications that adapt to several situations involving user, network, data, hardware and the application itself. Researchers in context-awareness have concentrated on how to capture context data and to carry it to the application. In this paper, we study the impact of context on the core of the application, give a new context definition useful for application design, ...