Nicolas Witt

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The ubiquity of sensor data calls for automatic processing to extract valuable information. Realtime Locating Systems (RTLS) provide many parallel position data streams for interacting objects, and event-based systems are the method of choice to analyze them. We demonstrate a distributed event processing system for position stream data from a Realtime(More)
The DEBS 2014 Grand Challenge targets the monitoring and prediction of energy loads of smart plugs installed in private households. This paper presents details of our middleware solution and efficient median calculation, shows how we address data quality issues, and provides insights into our enhanced prediction based on hidden Markov models. The(More)
The DEBS 2014 Grand Challenge targets the monitoring and prediction of energy loads of smart plugs installed in private households. This paper presents details of our middleware solution and efficient median calculation, shows how we address data quality issues, and provides insights into our enhanced prediction based on hidden Markov models. The evaluation(More)
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