movement data well GPS movement data is quite easily described you just have sequences of GPS coordinates and then associated timestamp and basically what we what we got was a data set of these trips across Vienna and that person here started his trip at the Green Dot ended it at the red dot and every dot in between was a GPS signal our task was for each of these GPS signals estimate which mode of transport he was taking was it going by bus was it going the Metro was he walking cycling going the car and so on actually