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Ubiquitous computing applications introduce multiple privacy challenges due to their sensing and actuation capabilities, which are often combined with ubiquitous interconnectivity. Because of the complexity of many ubicomp systems, users might have difficulties estimating the privacy implications of their actions and decisions. In this article, the authors discuss leveraging awareness about a user's...
With the rise of adaptive interactive systems came a growing demand for tools to test the envisioned adaptivity. This article presents a tactile interface allowing direct manipulation of a context model for adaptive behavior in intelligent environments. The presented tool starts with an abstract context model, which is transformed to an easy-to-use interface supporting tangible interaction. Different...
This article presents a context adaptive approach for multimodal interaction for the use in cognitive technical systems, so called companion systems. A system architecture is presented and we clarify where context awareness occurs on different levels with a layered context model. The focus is on the topics of dialog management, multimodal fusion, and multimodal fission, as the main participants in...
To enable context-awareness for many distributed mobile applications, an architecture is needed that supports the collecting of disseminated context attributes. After the structuring and storing of context, the interpretation and adaptation with reference to the current context and changes of context must be applied. These tasks are common to a large set of context-aware applications and can be centralized...
In ubiquitous systems control of privacy settings will be increasingly difficult due to the pervasive nature of sensing and communication capabilities. We identify challenges for privacy decisions in ubiquitous systems and propose a system for in situ privacy decision support. When context changes occur, the system adapts a user's privacy preferences to the new situation. As a consequence, recommendations...
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