Titel Participants Inhoud "Marker based activity transition models" "Sidharta Gautama, Rik Bellens" "A client device (100) for gathering mobility information of a user is described. The device comprises a sensor data obtaining means for collecting sensor data representative for transportation-characteristic information of a user and a marker information obtaining means for collecting marker information, the marker information being related to an environmental characteristic of the user or an activity of the user not determined based on a transportation characteristic. The system also comprises a processing means for combining the transportation-characteristic information of the user and the ..."