Jeroen Kools

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In this paper, we estimate different types of social actions from a single body-worn accelerometer in a crowded social setting. Accelerometers have many advantages in such settings: they are impervious to environmental noise, unobtrusive, cheap, low-powered, and their readings are specific to a single person. Our experiments show that they are surprisingly(More)
Semantic tagging of images has a broad spectrum of applications, of both scientific and commercial interest. Experience has indicated that designing the interaction with human taggers in the form of a web game can be a very effective way to collect valuable tagged data. So far, implementations of such games have depended on explicit, deliberate input by the(More)
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