Andreas Zinnen Kristof Van Laerhoven Bernt Schiele Toward Recognition of Short and Non-repetitive Activities from Wearable Sensors. 142-158 2007 conf/eusai/2007 AmI http://dx.doi.org/10.1007/978-3-540-76652-0_9 db/conf/eusai/ami2007.html#ZinnenLS07