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Context project: "In mobile and ubiquitous applications and systems, reacting to user context is a key component of proactivity: changes in the user's situation are rapid and they are strongly reflected to the user's needs and preferences. The Context project studies characterization and analysis of information about user's context and its use in proactive adaptivity: what is the user's understanding of her current context, how to make automatic inferences about the contexts, and how to characterize context to users and design user interaction about contexts. The research problems are approached by qualitative end user studies, data analysis algorithm development, and empirical testing in a prototype environment."