Knowledge Extraction

Problem A main obstacle to deploy body-worn sensor-based wearable systems in free-living settings is the limited battery life. Runtime of devices such miniature accessories and garment can barely cover the time of a daily activity. A continuous long-term behavioural monitoring system requires energ... Continue

In this collaborative project, including the Reha Clinic in Rheinfelden and the ETH Zürich, we investigated recovery trends in hemiparetic patients afters troke using wearable IMUs. We evaluated algorithms for unsupervised stride detection, walking parameter estimation and trend quantification. In... Continue

To provide high-quality dietary assessment of free-living behaviour is the first step for implementing any effective diet coaching and weight management program.  A continuous direct human observation is an expensive and non-scalable solution. Exploiting an unobtrusive wearable camera-based solution... Continue

In data mining, the relationship between variables is extracted from the association of events in a record. For example,  consider a shopping receipt as a record of acquired items and each item as an event. Therefore, data mining looks for the association of products that are usually purchased toget... Continue

Swallowing appears more accessible than chewing since it involves the neck (pharyngeal) region, rather than the head. Our early investigations were focused on EMG and strain sensing collars. EMG sensors at submental and hyoid positions showed sufficient signal quality for detection of swallows due t... Continue

As people move through the building, they generate paths seen as activations of different sensors and actuators. Individually, a path can be described a sequence of events; each event corresponds to a significant change in the state or value of a sensor or actuator. As paths repeat and overlap, a su... Continue

ACTLab Activities Office buildings take up to a year to be fully commissioned, and usually, only a subset of the installed capacities are deployed. The main goal of the project is to aid in the commissioning and management of smart office building with a high density of pervasive devices. We design... Continue