Context-awareness is an important element for developing mobile
services. Often, context is available as sensor data but
not in a form that can be exploited in (mobile) applications.
In this paper, we present an approach to generate high level
context from sensor data. First, we describe a process model
and illustrate this model by a case study with an acceleration
sensor. Then we explain the design and implementation of
software components that are integrated in a framework
supporting the development of mobile applications. Thus, we
demonstrate the evolution of sensor data from raw data
streams to aggregated data and to interpreted
information.
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